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主要經(jīng)營的試劑品牌：
Roche試劑，部分常用現(xiàn)貨，周三定貨，2-3周到貨。
GE試劑，耗材，部分常用現(xiàn)貨，周二，周五定貨，3周左右到貨。
R&D試劑，周三定貨，2-3周到貨。
SIGMA試劑，周一，五定貨，3周左右到貨。
Millipore試劑，每周三定貨，2-3周到貨。
Invitrogen試劑，部分現(xiàn)貨，周三定貨，2-3周到貨。
ABCAM試劑，周三定貨，2-3周到貨。
eBioscience試劑，部分常用現(xiàn)貨，周三定貨，2-3周到貨。
STANT CRUZ試劑，周三定貨，2-3周到貨。
Biolegend試劑，周三定貨，2-3周到貨。
Peprotech試劑，部分常用現(xiàn)貨，周三定貨，2-3周到貨。
USB試劑，常備現(xiàn)貨，周五定貨，4周到貨。
Amresco試劑，常備現(xiàn)貨，3-4周到貨。
羅氏原料，請來電來郵咨詢。
Thermo試劑，pierce, Hyclone部分常用現(xiàn)貨。
 
主要經(jīng)營的耗材品牌：     
1. BIOHIT，單道移液半支消毒長期*，350/支。                                        
2. BD Fa2. BD Falcon耗材，常用常備現(xiàn)貨。 
3. BRAND，常備現(xiàn)貨                

Protease from Streptomyces griseus ,P8811 - powder, BioReagent, suitable for mouse embryo cell culture, ≥3.5 units/mg solid

別名: Actinase E, Pronase E

• CAS號: 9036-06-0

  product line	BioReagent
  form	powder
  total impurities	starch, essentially free
  suitability	suitable for mouse embryo cell culture
  storage temp.	−20°C

產(chǎn)品描述如下：

Application

Protease is typically used in nucleic acid isolation procedures in incubations of 0.5-3.0 hours supplemented with 0.2% sodium dodecyl sulfate and 10 mM EDTA.

Other Notes

An unusually non-specific protease.

Preparation Note

Collected from culture broth of S. griseus and purified by successive column procedures.

Quality

Contains approximay 25% calcium acetate.

Specificity

A mixture of at least three proteolytic activities including an extracellular serine protease. In general, serine proteases display a wide range of substrate specificities, which are believed to be mediated by an active site composed of one Asp, one His, and a Ser residue in the molecule. This enzyme prefers to hydrolyze peptide bonds on the carboxyl side of glutamic or aspartic acid.

Unit Definition

One unit will hydrolyze casein to produce color equivalent to 1.0 μmole （181 μg） of tyrosine per min at pH 7.5 at 37 °C （color by Folin-Ciocalteu reagent）.

Physical properties

Compley inactivated by heating above 80 °C for 15-20 minutes.