貨號:Y9240L
產(chǎn)品描述:
RNA酶抑制劑是一種酸性的52kDa蛋白質(zhì),它是胰腺型核糖核酸酶如RNase A,RNase B和RNase C的有效非競爭性抑制劑。該酶以豬RNAse抑制劑基因與專有,22.5kDa蛋白質(zhì)標簽。
規(guī)格: | 20,000 U |
濃度: | 40,000U / ml |
保存: | -25°C至-15°C |
純度(SDS-PAGE) | > 99% |
SS核酸外切酶 | 2000 U <5.0% released |
DS核酸外切酶 | 2000 U <1.0% released |
DS內(nèi)切核酸酶 | 2000 U = No conversion |
大腸桿菌 DNA污染 | 2000 U <10 copies |
蛋白質(zhì)來源
攜帶豬RNAse抑制劑基因的重組大腸桿菌菌株。
補充:
20 mM Hepes-KOH
50 mM KCl
8 mM DTT
50%甘油
pH 7.5(25°C)
單位定義
一個單位定義為5ng核糖核酸酶A抑制胞苷2',3'-環(huán)狀單磷酸水解50%所需的酶量。
質(zhì)量控制分析
單位表征測定
使用1.1倍系列稀釋法測定比活性。在1X RNAse抑制劑反應(yīng)緩沖液中制備酶的稀釋液,并將其加入到含有1mM胞苷2',3'-環(huán)狀單磷酸酯,1μgRNA酶A的1000μL反應(yīng)物中,該反應(yīng)緩沖液含有100mM Tris-乙酸鹽,1mM EDTA,pH6.5。在5分鐘的反應(yīng)期間以20秒的間隔觀察286nm處的吸光度。
蛋白質(zhì)濃度(OD 280)測量使用使用2.0mg / ml BSA樣品(Pierce Cat#23209)標準化的Nanodrop ND-1000分光光度計
在OD 280處分析2.0μL酶樣品并用產(chǎn)品儲存溶液沖切。使用消光系數(shù)59,600和分子量74,828道爾頓將觀察到的3個重復(fù)樣品的平均測量值轉(zhuǎn)化為mg / mL。
SDS-Page(物理純度評估)
將2.0μL濃縮的酶溶液加載到變性的4-20%Tris-甘氨酸SDS-PAGE凝膠上,該凝膠側(cè)翼為寬范圍的MW標記和2.0μL的樣品的1:100稀釋物。電泳后,將凝膠染色并比較??樣品以確定物理純度。該測試的驗收標準要求濃縮樣品中污染帶的總量不超過稀釋樣品中目的蛋白質(zhì)條帶的質(zhì)量,確認濃縮樣品的純度大于99%。
污染測試
單鏈核酸外切酶活性
將含有10,000cpm放射性標記的單鏈DNA底物和10μL酶溶液的50μl反應(yīng)液在37℃下孵育4小時,導(dǎo)致TCA可溶性計數(shù)的釋放少于5.0%。
雙鏈核酸外切酶活性將含有5,000cpm放射性標記的雙鏈DNA底物和10μL酶溶液的50μl反應(yīng)液在37℃下溫育4小時,導(dǎo)致TCA可溶性計數(shù)的釋放少于1.0%。
雙鏈核酸內(nèi)切酶活性將含有0.5μgpBR322 DNA和10μL酶溶液的50μL反應(yīng)物在37℃下溫育4小時,結(jié)果通過瓊脂糖凝膠電泳確定沒有肉眼可察覺地轉(zhuǎn)化為帶切口的環(huán)狀DNA。
使用RNAse Alert kit(Integrated DNA Technologies),按照制造商的指導(dǎo)原則,篩選非特異性RNAse測定產(chǎn)物的非特異性RNA酶污染。
大腸桿菌 16S rDNA污染測試
重復(fù)5μL酶溶液樣品變性,并在TaqMan qPCR測定中篩選污染性大腸桿菌基因組DNA,使用對應(yīng)于16S rRNA基因座的寡核苷酸引物。測試的驗收標準是由3個重復(fù)的無模板對照樣品的平均值產(chǎn)生的閾值循環(huán)計數(shù)(C t)。基于無模板對照 Ct值與標準曲線數(shù)據(jù)之間的相關(guān)性,該測定的檢測限為<10拷貝基因組/樣品。
部分產(chǎn)品信息:
貨號 | 品名 | 規(guī)格 | 濃度 | 品牌 |
---|---|---|---|---|
N2070-10-L | ATP Solution | 50 µmol | 10 mM | Enzymatics |
N2050-10-L | 10 mM dNTP Solution Mix | 100 µmol | 10 mM | Enzymatics |
N2010L | 100 mM 75µmol dNTP Solution Set | 75 µmol | 100 mM | Enzymatics |
N2010-A-L | 100 mM dATP Solution | 75 µmol | 100 mM | Enzymatics |
N2050L | 100µmol dNTP Solution Mix | 100 µmol | 25 mM | Enzymatics |
Y9180L | 10x Uracil Cleavage System | 750 Reactions | N/A | Enzymatics |
P7670 | 2x HiFi PCR Master Mix | 1 rxn | 2x | Enzymatics |
Y9420L | 5x ER/A-Tailing Enzyme Mix | 24 reactions | N/A | Enzymatics |
Y9380L | E. coli Pyrophosphatase | 50 U | 100 U/mL | Enzymatics |
Y9030L | E. coli Single-Stranded DNA Binding Protein | 1.5 mg | 2.75 mg/ml | Enzymatics |
Y9140-HC-L | End-Repair Mix (High Concentration) | 75 Reactions | 1 Rxn/µL | Enzymatics |
Y9140-LC-L | End-Repair Mix (Low Concentration) | 200 Reactions | 1 Rxn/µL | Enzymatics |
Y9080L | Endonuclease VIII | 10,000 U | 10,000 U/ml | Enzymatics |
P7600L | EnzScript™ (MMLV Reverse Transcriptase RNase H-) | 10,000 U | 200,000 U/mL | Enzymatics |
X8010L | Exonuclease I | 30,000 U | 20,000 U/ml | Enzymatics |
X8020L | Exonuclease III | 50,000 U | 100,000 U/ml | Enzymatics |
P7010-HC-L | Klenow (3′→ 5′ exo-) (High Concentration) | 10,000 U | 50,000 U/ml | Enzymatics |
P7010-LC-L | Klenow (3′→ 5′ exo-) (Low Concentration) | 10,000 U | 5,000 U/ml | Enzymatics |
P7060L | Klenow Fragment | 2,500 U | 5,000 U/ml | Enzymatics |
X8030L | Lambda Exonuclease | 10,000 U | 5,000 U/ml | Enzymatics |
P7040L | M-MuLV Reverse Transcriptase | 100,000 U | 200,000 U/ml | Enzymatics |
P7090L | Mako DNA Polymerase (3′→ 5′ exo-) | 3,000 U | 30,000 U/ml | Enzymatics |
P7140-HC-L | Manta 1.0 DNA Polymerase (High Concentration) | 100,000 U | 400,000 U/ml | Enzymatics |
P7140-LC-L | Manta 1.0 DNA Polymerase (Low Concentration) | 100,000 U | 40,000 U/ml | Enzymatics |
P7610L | NGS Library Prep: 2X VeraSeq™ PCR Mix – 250 Reactions | 250 Reactions | 2X | Enzymatics |
P7590L | Phoenix™ Hot Start Taq DNA Polymerase | 500 U | 5,000 U/ml | Enzymatics |
P7460L | Poly(A) Polymerase | 1,000 U | 5,000 U/mL | Enzymatics |
Y9260L | RecA | 1.5 mg | 2.0 mg/mL | Enzymatics |
Y9220L | RNAse H | 5,000 U | 5,000 U/ml | Enzymatics |
Y9240L | RNAse Inhibitor | 20,000 U | 40,000 U/ml | Enzymatics |
L6010L | T3 DNA Ligase | 900,000 U | 3,000,000 U/ml | Enzymatics |
L6030-LC-L | T4 DNA Ligase | 150,000 U | 120,000 U/ml | Enzymatics |
L6030-HC-L | T4 DNA Ligase (Rapid) | 240,000 U | 600,000 U/ml | Enzymatics |
P7080L | T4 DNA Polymerase | 2,000 U | 3,000 U/ml | Enzymatics |
Y9130L | T4 Gene 32 Protein | 1.0 mg | 10 mg/mL | Enzymatics |
Y9040L | T4 Polynucleotide Kinase | 10,000 U | 10,000 U/ml | Enzymatics |
L6050L | T4 RNA Ligase 1 | 10,000 U | 20,000 U/ml | Enzymatics |
L6080L | T4 RNA Ligase 2 | 4,500 U | 30,000 U/ml | Enzymatics |
L6070L | T4 RNA Ligase 2 Truncated | 500 U | 5,000 U/ml | Enzymatics |
L6020L | T7 DNA Ligase | 900,000 U | 3,000,000 U/ml | Enzymatics |
P7260L | T7 DNA Polymerase | 3,500 U | 10,000 U/ml | Enzymatics |
P7180L | T7 RNA Polymerase | 50,000 U | 50,000 U/ml | Enzymatics |
L6060L | Taq DNA Ligase | 20,000 U | 40,000 U/ml | Enzymatics |
P7110L | Taq DSC 2.0 DNA Polymerase | 1,250 U | 5,000 U/ml | Enzymatics |
P7250L | Taq-B DNA Polymerase | 10,000 U | 5,000 U/ml | Enzymatics |
P7620L | TaqIT | 5,000 U | 50,000 U/mL | Enzymatics |
P7070L | Terminal deoxynucleotidyl Transferase (TdT) | 6,000 U | 20,000 U/ml | Enzymatics |
G5020L | Thermolabile UDG | 500 U | 1,000 U/ml | Enzymatics |
Y9370L | Thermostable Pyrophosphatase | 1,250 U | 2,000 U/ml | Enzymatics |
G5010L | Uracil DNA Glycosylase | 10,000 U | 2,000 U/ml | Enzymatics |
P7511L | VeraSeq™ 2.0 High-Fidelity DNA Polymerase | 500 U | 2,000 U/ml | Enzymatics |
P7520L | VeraSeq™ ULtra DNA Polymerase | 500 U | 2,000 U/ml | Enzymatics |
L6030-W-L | WGS Ligase | 24 Reactions | N/A | Enzymatics |
P7640L | ZipScript™ One-Step RT-qPCR Kit | 1000 Reactions | N/A | Enzymatics |
P7020-HC-L | φ29 DNA Polymerase (High Concentration) | 2,000 U | 100,000 U/ml | Enzymatics |
P7020-LC-L | φ29 DNA Polymerase (Low Concentration) | 2,000 U | 10,000 U/ml | Enzymatics |
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