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詳細
Proteinase K is an endopeptidase that belongs to the subtilisin family of proteinases. The polypeptide chain contains 278 amino acids with the catalytic triad Asp39, His69, Ser224.
アプリケーション
Proteinase K has been used:
- to de-crosslink immunoprecipitated samples
- to treat the poly-L-lysine coated slides of colon tissues for terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay
- in in situ hybridization
生物化学的／生理学的作用
Proteinase K catalyzes the hydrolysis of esters and peptide bonds. It is used with non-aqueous hydrated solvents for synthesizing peptides. Proteinase K is used to break the cross-linking that develops secondary to formalin fixation and expose the target sequence for primers and polymerase.
アナリシスノート
Appearance (colour): colourless
Appearance (clearness): clear
Activity (hemoglobin; pH 7.5; 37 °C): ≥ 600 mAnsonU/ml
Spec. activity (calc. on protein): ≥ 40.0 mAnsonU/mg
DNases (Nicking activity; pBR 322; 6 h; 37 °C): not detectable
RNases (RNA; 2 h; 37°C): not detectable
Colony count (aerobic bacteria): ≤ 10 CFU/ml
Appearance (clearness): clear
Activity (hemoglobin; pH 7.5; 37 °C): ≥ 600 mAnsonU/ml
Spec. activity (calc. on protein): ≥ 40.0 mAnsonU/mg
DNases (Nicking activity; pBR 322; 6 h; 37 °C): not detectable
RNases (RNA; 2 h; 37°C): not detectable
Colony count (aerobic bacteria): ≤ 10 CFU/ml
シグナルワード
Danger
危険有害性情報
危険有害性の分類
Resp. Sens. 1
保管分類コード
12 - Non Combustible Liquids
WGK
WGK 1
引火点(°F)
Not applicable
引火点(℃)
Not applicable
試験成績書（COA）
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F Chavagnat et al.
Applied and environmental microbiology, 65(7), 3001-3007 (1999-07-02)
The general aminopeptidase PepN from Streptococcus thermophilus A was purified to protein homogeneity by hydroxyapatite, anion-exchange, and gel filtration chromatographies. The PepN enzyme was estimated to be a monomer of 95 kDa, with maximal activity on N-Lys-7-amino-4-methylcoumarin at pH 7
María Isabel Navarro-Mendoza et al.
Current biology : CB, 29(22), 3791-3802 (2019-11-05)
Centromeres are rapidly evolving across eukaryotes, despite performing a conserved function to ensure high-fidelity chromosome segregation. CENP-A chromatin is a hallmark of a functional centromere in most organisms. Due to its critical role in kinetochore architecture, the loss of CENP-A
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