Genomic DNA from Soil
Contents
1. Genomic DNA from Soil User Manual NucleoSpin Soil January 2010 Rev 01 MACHEREY NAGEL MN Genomic DNA Purification from Soil Protocol at a glance Rev 01 NucleoSpin Soil 1 Prepare sample NucleoSpin Soil Bead Tube 250 500 mg sample material 700 ul SL1 or SL2 2 Adjust lysis 150 ul Enhancer SX conditions 3 Sample lysis Horizontally vortex 5 min at RT or use other homogenizers according to manufacturers protocol 4 Precipitate 11 000 x g 2 min contaminants 150 pl SL3 C Vortex 5 s 0 4 C 5 min 11 000 x g 1 min 5 Filter lysate Load supernatant on NucleoSpin Inhibitor Removal Column 11 000 x g 1 min 6 Adjust binding conditions in 250 ul SB Vortex 5 s 7 Bind DNA Load 550 yl sample on NucleoSpin Soil Column de 11 000 x g 1 min S Load remaining sample 11 000 x g 1 min 8 Wash silica EM 50455 11 000 x g 30 s membrane S E e ES 550 sw 11 000 x g 30 s ji EE 7004 sw2 votex2s 11 000x g 30 s Ww Eg 700 ul SW2 Vortex2s 11 000 x g 30 s 9 Dry silica membrane E g eS 11 000 x g 2 min A 10 Elute DNA I d 30 100 yl SE C RT 1 min 8 11 000 x g 1 min MACHEREY NAGEL GmbH amp Co KG Neumann Neander Str 6 8 D 52355 D ren Germany Tel 49 0 24 21 969 270 www mn net com e mail tech bio mn net com Genomic DNA from Soil Table of contents 1 Components 4 1 1 Kit contents 4 1 2 Reagents consumables and equipment to be sup2. 01 2010 Rev 01 Genomic DNA from Soil Table 1 Kit specifications at a glance Parameter NucleoSpin Soil Sample size Up to 500 mg soil or sediment Typical yield 2 10 ug Elution volume 30 100 ul Binding capacity 50 ug Preparation time 90 min 10 preps Format Mini spin column 2 3 Relevance of humic substances as PCR inhibitors Humic substances are produced by bacteria fungi and protozoa in soil sediments and waters during the degradation of plant or other organic matter They consist of very high molecular weight compounds with undefined structures Building blocks are mainly heterocyclic aromatic compounds that are linked by ether or ethoxy groups and which carry hydroxyl methoxy carbonyl or carboxyl groups According to their solubility in water they are divided into humin humic acids and fulvic acids The completely insoluble and black humin has an average molecular weight of around 300 000 g mol The dark brown to grey colored humic acids are slightly smaller They carry a lot of hydroxyl and carboxyl groups and are therefore mainly soluble at neutral or alkaline pH The only slightly yellow to light brown colored fulvic acids with an average molecular weight of 2 000 g mol are soluble under alkaline as well as under acidic conditions Due to the high molecular weight and the mainly polyanionic nature of humic substances most purification methods do not distinguish between these molecules and DNA
3. as shown in Figure 2 indicate significant amounts of impurities and the real DNA concentration is far below its calculated value Additionally not only humic acids but also proteins saccharides and other contaminants can be detected by a low A A ratio 260 230 Purity ratio A A Another indicator of DNA purity is the ratio A A which should be between 1 8 and 1 9 Values below 1 8 indicate protein contamination whereas higher values indicate RNA contamination However this ratio should be treated with caution since contamination with protein and RNA at the same time can compensate each other and result in a perfect A A Agarose gel electrophoresis As a consequence the DNA should always be run on an agarose gel to verify the UV VIS quantification especially if A A and A A are beyond the acceptable range Figure 3 demonstrates that the contaminated sample B of Figure 2 actually contains much less DNA than the pure sample A in contrast to the UV VIS results which can easily be misinterpreted Figure 3 Gel analysis of A pure and B contaminated genomic DNA from soil 10 ul of each sample were run on a 1 TAE agarose gel 1 h 100 V The larger gel band of pure DNA A proves a higher yield and concentration compared to the contaminated DNA sample which is in contrast to the UV VIS quantification A 7 7 ug 100 ul B 9 3 ug 100 yl 12 MACHEREY NAGEL 01 2010 Rev 01 Genomic DNA
4. For the same reason they act as extremely potent PCR inhibitors Even smallest amounts of humic substances can inhibit for example DNA polymerases or restriction enzymes and result in a complete failure of enzymatic downstream applications Frequently the problem is circumvented by dilution of the isolated DNA prior to PCR analysis However this results in a significantly reduced sensitivity because low abundance DNA may be lost completely Thus highest DNA yields with as little PCR inhibitor contaminations as possible are of utmost importance for any DNA analysis of soil samples MACHEREY NAGEL 01 2010 Rev 01 7 Genomic DNA from Soil 2 4 Amount of starting material NucleoSpin Soil is suitable for processing 250 500 mg of sample material However do not fill the NucleoSpin Bead Tube higher than the 1 ml mark including the ceramic beads to ensure sufficient head space for an efficient mechanical disruption Usually a reduction of starting material also helps to improve the lysis efficiency and to increase the purity of the DNA Very dry material can soak up large volumes of lysis buffer In this case either reduce the amount of sample material or add additional lysis buffer up to the 1 5 ml mark of the NucleoSpin Bead Tube If possible remove foreign material like leaves stones or twigs e 9 by sieving as well as excess of water e g by discarding the supernatant after spinning down sediment samples 2
5. from Soil 3 Storage conditions and preparation of working solutions Attention Buffers SB and SW1 contain guanidinium thiocyanate and guanidine hydrochloride respectively Wear gloves and goggles Storage conditions e All kit components should be stored at room temperature 18 25 C and are stable for at least one year Storage at lower temperatures may cause precipitation of salts If precipitation occurs incubate the bottle for several minutes at about 30 40 C and mix well until the precipitate is dissolved Before starting the first NucleoSpin Soil procedure prepare the following e Wash Buffer SW2 Add the indicated volume of ethanol 96 100 to Buffer SW2 Concentrate Mark the label of the bottle to indicate that ethanol was added The Buffer SW2 is stable at room temperature 18 25 C for at least one year NucleoSpin Soil 10 preps 50 preps 250 preps Cat No 740780 10 740780 50 740780 250 Wash Buffer SW2 6 ml 20 ml 2x50ml Concentrate Add 24 ml ethanol Add 80 ml ethanol Add 200 ml ethanol to each bottle MACHEREY NAGEL 01 2010 Rev 01 18 Genomic DNA from Soil 4 Safety instructions risk and safety phrases The following components of the NucleoSpin Soil kits contain hazardous contents Wear gloves and goggles and follow the safety instructions given in this section Component Hazard Hazard Risk Safety contents symbol phrases phrases SB Guanidinium x Xn Harmf
6. 5 Choice of lysis buffer Due to the highly varying composition of different soils organic matter inorganic matter humic substances metal ions polysaccharides pH etc it is impossible to obtain best results in DNA yield and purity for all sample types with only one single lysis buffer System There are several parameters that can be adjusted in a way that lysis works perfect for one sample but fails with another Therefore the NucleoSpin Soil Kit is equipped with two Lysis Buffers SL1 and SL2 and an Enhancer SX Those three components allow a perfect fine tuning for every type of soil sample for maximum yield and purity Unfortunately for the reasons given above there is no way to predict the best choice of lysis buffer for a specific sample This can only be determined experimentally Therefore both lysis buffers should be tested in parallel for each new sample material After mixing the sample with lysis buffer in the NucleoSpin Bead Tube the Enhancer SX is added routinely to the sample prior to the mechanical homogenization This buffer ensures the highest possible DNA yield with most sample materials However in case of a very high humic acid content in the sample material the Enhancer SX might also reduce the purity of the DNA by facilitating the release of humic acids into the lysate Therefore the volume of added Enhancer SX can be lowered from 150 ul to for example 10 ul or the buffer can be entirely omitted This usually in
7. TO THE SUITABILITY REPRODUCTIVITY DURABILITY FITNESS FOR A PARTICULAR PURPOSE OR USE MERCHANTABILITY CONDITION OR ANY OTHER MATTER WITH RESPECT TO MACHEREY NAGEL PRODUCTS In no event shall MACHEREY NAGEL be liable for claims for any other damages whether direct indirect incidental compensatory foreseeable consequential or special including but not limited to loss of use revenue or profit whether based upon warranty contract tort including negligence or strict liability arising in connection with MACHEREY NAGEL 01 2010 Rev 01 21 Genomic DNA from Soil the sale or the failure of MACHEREY NAGEL products to perform in accordance with the stated specifications This warranty is exclusive and MACHEREY NAGEL makes no other warranty expressed or implied The warranty provided herein and the data specifications and descriptions of this MACHEREY NAGEL product appearing in MACHEREY NAGEL published catalogues and product literature are MACHEREY NAGEL s sole representations concerning the product and warranty No other statements or representations written or oral by MACHEREY NAGEL s employees agent or representatives except written statements signed by a duly authorized officer of MACHEREY NAGEL are authorized they should not be relied upon by the customer and are not a part of the contract of sale or of this warranty Product claims are subject to change Therefore please contact our Technical Service Team for the mo
8. by passing it through a NucleoSpin Inhibitor Removal Column DNA binding conditions are then adjusted by addition of Binding Buffer SB to the flow through and the lysate is loaded onto a NucleoSpin Soil Column Residual humic substances especially humic acids and other PCR inhibitors are removed by efficient washing with Binding Buffer SB and Wash Buffers SW1 SW2 After a drying step ready to use DNA can be eluted with Elution Buffer SE 5 mM Tris HCI pH 8 5 2 2 Kit specifications e The NucleoSpin Soil kit is designed for the isolation of high molecular weight genomic DNA from microorganisms like Gram positive and Gram negative bacteria archaea fungi and algae in soil sludge and sediment samples e The kit offers two special lysis buffers Buffer SL1 and Buffer SL2 which can be combined with the chemical additive Enhancer SX to guarantee highest possible yields with excellent purity for all types of sample material e Efficient mechanical lysis of the sample material is achieved by bead beating using the ceramic NucleoSpin Beads The optimized buffer chemistry and the NucleoSpin Inhibitor Removal Column completely remove humic substances and other PCR inhibitors typically present in soil and sediment samples The eluted DNA is ready to use for all standard downstream applications In most cases the concentrated DNA can be used as PCR template without further dilution for highest sensitivity 6 MACHEREY NAGEL
9. creases the purity A A of the sample significantly Table 2 might however lower the DNA yield Figure 1 Ideally for a new sample material both lysis buffers Buffer SL1 and SL2 should be tested with and without adding Enhancer SX These initial four preparations will help you to find the ideal lysis condition for your special soil composition 8 MACHEREY NAGEL 01 2010 Rev 01 Genomic DNA from Soil 1 EM s momo Figure 1 Total DNA purified from wheat field soil with four different lysis buffer combinations 20 of 100 ul eluate were analyzed on a 1 TAE agarose gel Lane 1 Marker i Hindlll Lane 2 Lysis Buffer SL1 Lane 3 Lysis Buffer SL1 Enhancer SX Lane 4 Lysis Buffer SL2 Lane 5 Lysis Buffer SL2 Enhancer SX Table 2 Yields and purity ratios of DNA purified from wheat field soil Buffer SL1 SL2 Enhancer SX Yield 2 3 ug 2 3 ug 1 4 ug 3 1 ug Ad ceo 1 69 1 60 1 76 1 72 A ad oso 1 85 0 96 1 78 0 99 MACHEREY NAGEL 01 2010 Rev 01 Genomic DNA from Soil 2 6 Mechanical sample lysis A thorough mechanical lysis step is essential to break up the soil crumbs to free the cells within the soil and to break up cells and spores Ceramic beads have proven to be most effective in combination with a bead mill a FastPrep 24 instrument MP Biomedicals set instrument to 5 m s for 30 s or an adapter for Vortex Genie 2 MO BIO In most cases however this kind of equ
10. e DNA solid line exhibiting a peak at 260 nm a decrease of absorption with a minimum at 230 nm and only a moderate increase in absorption below 230nm In comparison the spectrum of a sample that is contaminated with humic acids demonstrates only a small shoulder at 260 nm it lacks the minimum at 230 nm and the absorption sores up below 230 nm In this case only a small part of the absorbance at 260 nm is caused by DNA most of it is just the tailing absorption of the humic acid contamination However the calculated DNA yield seems to be higher in the contaminated sample Thus DNA yield determined by UV VIS might be distorted by co purifying contaminants and we recommend to check the DNA yield also by agarose gel electrophoresis 14 12 m 1 0 E 0 8 a 0 6 0 4 0 2 A 0 0 Absorption 210 220 230 240 250 260 270 280 290 300 Wave length nm Figure 2 UV VIS quantification of A pure DNA and B contaminated DNA A 7 7 ug in 100 ul 1 84 A A 1 71 A A 260 280 260 230 B 9 3 yg in 100 ul 1 35 A A s 0 27 A Ass MACHEREY NAGEL 01 2010 Rev 01 11 Genomic DNA from Soil Purity ratio A A To facilitate the decision whether the yield as determined from A readings can be trusted or not the ratio of the absorption at 260 nm and 230 nm can be used The ratio A 9 A5 Should be higher than 2 0 for pure DNA and is acceptable down to ratios of about 1 5 Smaller values around or even below 1 0
11. e shaking time and velocity or use another shaking device see section 2 6 for more information Make sure that the NucleoSpin Bead Tube is fixed horizontally on the vortexer Reagents not applied or restored properly Always dispense exactly the buffer volumes given in the protocol Always follow closely the given instructions with regard to order and mode of mixing shaking vortexing etc Add the indicated volume of ethanol 96 100 to Wash Buffer SW2 Concentrate and mix thoroughly see section 3 for more information Store kit components at room temperature 18 25 C Storage at lower temperatures may cause salt precipitation Check Lysis Buffer SL1 and SL2 for white precipitate If precipitation occurred incubate the bottle for 10 min at 30 40 C and shake every 2 minutes until all precipitate is dissolved see section 3 for more information Keep bottles tightly closed in order to prevent evaporation or contamination Sample material not stored properly Whenever possible use fresh material MACHEREY NAGEL 01 2010 Rev 01 19 Genomic DNA from Soil Problem Possible cause and suggestions Too harsh mechanical sample disruption e Reduce intensity or incubation time of mechanical sample DNA is lysis degraded DNA is degraded by DNases e Add atleast 10 15 ul Enhancer SX to the lysate DNA yield was overestimated e If DNA eluates are not completely free of contaminants e g RNA pr
12. ial to a NucleoSpin Bead Tube containing the ceramic beads 250 500 mg s sample Important Do not fill the tube higher than the 1 ml mark 700 pl Add 700 yl Buffer SL1 or Buffer SL2 SET orSL2 Note for very dry material If the sample material soaks up too much lysis buffer fill the NucleoSpin Bead Tube up to the 1 5 ml mark with fresh lysis buffer Note for very wet material Remove excess liquid before addition of lysis buffer if necessary after spinning down the sample 2 Adjust lysis conditions Add 150 pl Enhancer SX and close the cap 150 pl SX Note Enhancer SX ensures the highest possible DNA yield It can however also promote the release of humic acids See section 2 5 on how to lower the volume or omit the buffer entirely in order to increase DNA purity MACHEREY NAGEL 01 2010 Rev 01 15 NucleoSpin Soil 3 Sample lysis See section 2 6 for more information on homogenization methods e g FastPrep 24 instrument Vortex adapter Attach the NucleoSpin Bead Tubes horizontally to a vortexer for example by taping or using a special adapter Vortex the samples at full speed and room temperature 18 25 C for 5 min 4 Precipitate contaminants Centrifuge for 2 min at 11 000 x g to eliminate the foam caused by the detergent Note The clear supernatant can be transferred to a new collection tube not provided prior to the following precipitation This might result in more consistent yield
13. ipment is not necessary The same result can be achieved by taping the lysis tubes horizontally to a standard vortexer The lysis time should be as short as necessary to avoid shearing of DNA and to minimize the release of humic acids Depending on the sample however it might be advantageous to increase the lysis time to 10 20 or 30 min Homogenization and cell disruption should be performed at room temperature 18 25 C to avoid SDS precipitation in the lysis buffers Overheating the sample for example by prolonged bead beating in a bead mill or the FastPrep 24 instrument should be avoided to minimize liberation of humic acids 2 7 Repeated extraction For sample materials containing a high amount of microorganisms a single extraction step might not be sufficient to disrupt every cell and to release all DNA Extracting the sample twice may help to increase DNA yield significantly Therefore follow the protocol until the first centrifugation in step 4 But instead of adding SL3 directly to the NucleoSpin Bead Tube transfer the supernatant to a new collection tube not provided and complete step 4 with this supernatant Then repeat steps 1 4 with the same soil sample in the NucleoSpin Bead Tube Filter both final supernatants of step 4 through a NucleoSpin Inhibitor Removal Column as described in step 5 Add Binding Buffer SB to both filtrates according to step 6 and finally load both samples on one NucleoSpin Soil Column acco
14. n is intended for its use to identify any specific organism or for clinical use diagnostic prognostic therapeutic or blood banking It is rather the responsibility of the user to verify the use of the NucleoSpin Soil kit for a specific application range as the performance characteristic of this kit has not been verified to a specific organism This MACHEREY NAGEL product is shipped with documentation stating specifications and other technical information MACHEREY NAGEL warrants to meet the stated specifications MACHEREY NAGEL s sole obligation and the customer s sole remedy is limited to replacement of products free of charge in the event products fail to perform as warranted Supplementary reference is made to the general business terms and conditions of MACHEREY NAGEL which are printed on the price list Please contact us if you wish an extra copy MACHEREY NAGEL does not warrant against damages or defects arising in shipping and handling transport insurance for customers excluded or out of accident or improper or abnormal use of this product against defects in products or components not manufactured by MACHEREY NAGEL or against damages resulting from such non MACHEREY NAGEL components or products MACHEREY NAGEL makes no other warranty of any kind whatsoever and SPECIFICALLY DISCLAIMS AND EXCLUDES ALL OTHER WARRANTIES OF ANY KIND OR NATURE WHATSOEVER DIRECTLY OR INDIRECTLY EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION AS
15. n the collection tube has touched emn the NucleoSpin Soil Column after the drying step discard cS flow through and centrifuge again 10 Elute DNA Place the NucleoSpin Soil Column into a new microcentrifuge tube not provided 30 100 pl Add 30 ul for high concentration 50 ul for medium SE concentration and yield or 100 pl for high yield Buffer SE to the column RT 1 min Do not close the lid and incubate for 1 min at room temperature 18 25 C Close the lid and centrifuge for 11 000 x g 30 s at 11 000 x g 30s Note Quantify DNA not only by UV VIS but also run an agarose gel to verify yield and DNA quality see section 2 9 for more information 18 MACHEREY NAGEL 01 2010 Rev 01 Genomic DNA from Soil 6 Appendix 6 1 Troubleshooting Problem Possible cause and suggestions Poor or no DNA yield Suboptimal lysis conditions Too much sample material was filled into the NucleoSpin Bead Tube Too little head space does not allow the necessary motion of the beads to disrupt the sample Use less sample material see section 2 4 for more information Compare the yields obtained with Lysis Buffer SL1 and SL2 in parallel purifications each with and without addition of Enhancer SX to find the optimal lysis buffer conditions see section 2 5 for more information Insufficient disruption and or homogenization of starting material Shaking of the NucleoSpin Bead Tube was too weak or not long enough Increas
16. otein humic substances UV VIS quantification based on A is not reliable due to the contribution of the contaminants to the absorption at 260 nm Carry over of ethanol or salt Make sure to dry the silica membrane and the NucleoSpin Soil Column completely before elution to avoid carry over of Suboptimal ethanolic Wash Buffer SW2 performance e Check if Buffer SW2 has been equilibrated to room temperature of DNA in 18 25 C before use Washing at lower temperatures downstream decreases the efficiency of salt removal experiments Contamination with PCR inhibitors The DNA purity can be increased by lowering the amount of starting material see section 2 4 for more information Enhancer SX can facilitate the release of humic substances Reduce Enhancer SX to 10 yl or omit the buffer entirely see section 2 5 for more information Make sure to carefully follow the washing instructions Dilute DNA 1 10 to reduce concentration of inhibitors 20 MACHEREY NAGEL 01 2010 Rev 01 Genomic DNA from Soil 6 2 Ordering information Product Cat No Pack of NucleoSpin Soil 740780 10 50 250 10 50 250 preps Collection Tubes 2 ml 740600 1000 Visit www mn net com for more detailed product information 6 3 Product use restriction warranty NucleoSpin Soil kit components were developed designed distributed and sold FOR RESEARCH PURPOSES ONLY They are suitable FOR IN VITRO USES ONLY No claim or representatio
17. plied by user 5 1 3 About this User Manual 5 2 Product description 6 2 1 The basic principle 6 2 2 Kit specifications 6 2 3 Relevance of humic substances as PCR inhibitors 7 2 4 Amount of starting material 8 2 5 Choice of lysis buffer 8 2 6 Mechanical sample lysis 10 2 Repeated extraction 10 2 8 Elution procedures 10 2 9 How to interpret DNA yield and purity from UV VIS 11 3 Storage conditions and preparation of working solutions 18 4 Safety instructions risk and safety phrases 14 5 Protocol Purification of DNA from soil and sediment 15 6 Appendix 19 6 1 Troubleshooting 19 6 2 Ordering information 21 6 3 Product use restriction warranty 21 MACHEREY NAGEL 01 2010 Rev 01 3 Genomic DNA from Soil 1 Components 1 1 Kit contents NucleoSpin Soil 10 preps 50 preps 250 preps Cat No 740780 10 740780 50 740780 250 Lysis Buffer SL1 30 ml 2x30ml 250 ml Lysis Buffer SL2 30 ml 2x 30 ml 250 ml Lysis Buffer SL3 5 ml 15 ml 50 ml Enhancer SX 3 ml 10 ml 50 ml Binding Buffer SB 10 ml 2x25 ml 2x 125 ml Wash Buffer SW1 6 ml 30 ml 2x75 ml Wash Buffer SW2 Concentrate 6 ml 20 ml 2x 50 ml Elution Buffer SE 5 ml 15 ml 30 ml NucleoSpin Bead Tubes 10 50 250 NucleoSpin Inhibitor Removal 10 50 250 Columns red rings NucleoSpin Soil Columns 10 50 250 green rings Collection Tubes 2 ml 10 50 250 Collection Tubes 2 ml lid 10 50 250 User Manual 1 1 1 For preparation of working solutions and storage condition
18. rding to step 7 in multiple loading steps Note that the supplied buffer volumes are calculated for only one extraction The limiting excess of Binding Buffer SB allows only 15 and 35 double extractions with the 50 prep and 250 prep kit respectively 2 8 Elution procedures It is possible to adapt the elution method temperature and volume of elution buffer used for the subsequent application of interest In addition to the standard method where an increase of DNA concentration can be achieved by reducing the elution volume from 100 to 30 ul there are two options to increase the DNA yield e Heat the elution buffer to 80 C e Perform two subsequent elution steps with fresh elution buffer 10 MACHEREY NAGEL 01 2010 Rev 01 Genomic DNA from Soil 2 9 Howto interpret DNA yield and purity from UV VIS The most common method to determine the DNA yield is UV VIS spectroscopy The DNA concentration in the final eluate can be calculated from its absorption maximum at 260 nm A based on the fact that an absorption of A 1 corresponds to 50 pg ml double stranded DNA However this calculation assumes the absence of any other compound that absorbs UV light at 260 nm Any contamination with for example RNA protein or especially humic substances significantly contributes to the total absorption at 260 nm and therefore leads to an overestimation of the real DNA concentration Figure 2 shows a typical UV absorbance spectrum of pur
19. s from prep to prep Add 150 ul Buffer SL3 and vortex for 5 s Incubate for 5 min at 0 4 C Centrifuge for 1 min at 11 000 x g 5 Filter lysate Place a NucleoSpin Inhibitor Removal Column red ring in a Collection Tube 2 ml lid Load up to 700 ul clear supernatant of step 4 onto the filter Centrifuge for 1 min at 11 000 x g Note With very wet samples e g sediments the volume of clear supernatant of step 4 can exceed 700 ul significantly In this case transfer the NucleoSpin Inhibitor Removal Column to a new collection tube not provided and load the remaining supernatant Centrifuge for 1 min at 11 000 x g Combine the flow throughs Discard the NucleoSpin Inhibitor Removal Column If a pellet is visible in the flow through transfer the clear supernatant to a new collection tube not provided Vortex RT 5 min 11 000 x g 2 min 150 yl SL3 Vortex 5s 0 4 C c5 5 min 11 000 x g 1 min Load supernatant 11 000 x g 1 min 16 MACHEREY NAGEL 01 2010 Rev 01 NucleoSpin Soil 6 Adjust binding conditions 250 ul SB Add 250 pl Buffer SB and close the lid Vortex 5 s Vortex for 5 s 7 Bind DNA Place a NucleoSpin Soil Column green ring in a Collection Tube 2 ml Load 550 yl sample Load 550 pl sample onto the column 11 000x g Centrifuge for 1 min at 11 000 x g 1 min Discard flow through and place the column back into the Load collection tube remaining C
20. s see section 3 Composition of Elution Buffer SE 5 mM Tris HCl pH 8 5 4 MACHEREY NAGEL 01 2010 Rev 01 Genomic DNA from Soil 1 2 Reagents consumables and equipment to be supplied by user Reagents e 96 100 ethanol Consumables e 1 5 ml microcentrifuge tubes Disposable pipette tips Equipment Manual pipettors e Centrifuge for microcentrifuge tubes e Equipment for sample disruption and homogenization see section 2 6 Personal protection equipment e g lab coat gloves goggles 1 3 About this User Manual It is strongly recommended that first time users of the NucleoSpin Soil kit read the detailed protocol sections of this User Manual Experienced users however may refer to the Protocol at a glance instead The Protocol at a glance is designed to be used only as a supplemental tool for quick referencing while performing the purification procedure All technical literature is available on the internet at www mn net com MACHEREY NAGEL 01 2010 Rev 01 5 Genomic DNA from Soil 2 Product description 2 1 The basic principle The sample material is resuspended in Lysis Buffer SL1 or SL2 supplemented with the Enhancer SX and mechanically disrupted using ceramic beads Proteins and PCR inhibitors are precipitated with Lysis Buffer SL3 and subsequently pelleted by centrifugation together with the ceramic beads and undissolved sample material The supernatant is taken off and cleared
21. sample Load the remaining sample onto the column 11 000 x g Centrifuge for 1 min at 11 000 x g 1 min Discard flow through and place the column back into the collection tube 8 Wash and dry silica membrane EET 500 ul SB Add 500 ul Buffer SB to the NucleoSpin Soil Column 11 000x g Centrifuge for 30 s at 11 000 x g 30s Discard flow through and place the column back into the collection tube Add 550 pl Buffer SW1 to the NucleoSpin Soil Column 550 pl SW1 Centrifuge for 30 s at 11 000 x g 11 000x g 30s Discard flow through and place the column back into the collection tube MACHEREY NAGEL 01 2010 Rev 01 17 NucleoSpin Soil 700 pl SW2 Add 700 ul Buffer SW2 to the NucleoSpin Soil Column Vortex 2 s Close the lid and vortex for 2 s Centrifuge for 30 s at 11 000 x 11 000 x g Discard flow through and place the column 30 g back into the collection tube Add 700 ul Buffer SW2 to the NucleoSpin Soil Column 700 pl SW2 Close the lid and vortex for 2 s Centrifuge for 30 s at 11 000 x g Discard flow through and place the column Vortex 2 s back into the collection tube 11 000x g Note The same collection tube is used throughout the entire 30s washing procedure to reduce plastic waste If new collection tubes are to be used for each step see section 6 2 for ordering information 9 Dry silica membrane Centrifuge for 2 min at 11 000 x g F 11 000 x g If for any reason the liquid i
22. st up to date information on MACHEREY NAGEL products You may also contact your local distributor for general scientific information Applications mentioned in MACHEREY NAGEL literature are provided for informational purposes only MACHEREY NAGEL does not warrant that all applications have been tested in MACHEREY NAGEL laboratories using MACHEREY NAGEL products MACHEREY NAGEL does not warrant the correctness of any of those applications Please contact MACHEREY NAGEL Germany Tel 49 0 24 21 969 270 e mail TECH BIO Q mn net com Last updated 12 2006 Rev 02 Trademarks FastPrep is a registered trademark of MP Biomedicals LLC NucleoSpin is a registered trademark of MACHEREY NAGEL GmbH amp Co KG Vortex Genie is a registered trademark of Scientific Industries Inc All used names and denotations can be brands trademarks or registered labels of their respective owner also if they are not special denotation To mention products and brands is only a kind of information i e it does not offend against trademarks and brands and can not be seen as a kind of recommendation or assessment Regarding these products or services we can not grant any guarantees regarding selection efficiency or operation 22 MACHEREY NAGEL 01 2010 Rev 01
23. ul by inhalation R 20 21 22 S 13 thiocyanate in contact with the skin and if swallowed SW1 Guanidine x Xn Flammable Harmful R 10 22 S 7 16 25 hydrochloride if swallowed No 36 38 isopropanol smoking Irritating to lt 25 eyes and skin Risk phrases R 10 Flammable R 22 Harmful if swallowed R 20 21 22 Harmful by inhalation in contact with the skin and if swallowed R 36 38 Irritating to eyes and skin Safety phrases S7 Keep container tightly closed S 13 Keep away from food drink and animal feedstuffs S 16 Keep away from sources of ignition No smoking S25 Avoid contact with eyes Hazard labeling not necessary if quantity per bottle below 125g or ml certificate of exemption according to 67 548 EEC Art 25 1999 45 EC Art 12 and German GefStoffV 8 20 3 and TRGS 200 7 1 For further information see Material Safety Data Sheet 14 MACHEREY NAGEL 01 2010 Rev 01 NucleoSpin Soil 5 Protocol Purification of DNA from soil and sediment Before starting the preparation e Check Lysis Buffer SL1 or SL2 for precipitated SDS Dissolve any precipitate by incubating the buffer at 30 40 C for 10 min and shaking the bottle every 2 min 1 Prepare sample See section 2 4 and 2 5 for more information on the amount of starting material and the choice of lysis buffer See section 2 7 for the repeated extraction of a sample to improve DNA yield Transfer 250 500 mg fresh sample mater
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