Skip to Content
Merck
All Photos(4)

Key Documents

View All Documentation

P5380

Sigma-Aldrich

Protease from Bacillus licheniformis

Type VIII, lyophilized powder, 7-15 units/mg solid

Synonym(s):

Proteinase from Bacillus licheniformis, Subtilisin A

Sign Into View Organizational & Contract Pricing
All Photos(4)

About This Item

CAS Number:
9014-01-1
Enzyme Commission number:
3.4.21.62 (BRENDA, IUBMB)
EC Number:
232-752-2
MDL number:
MFCD00132092
UNSPSC Code:
12352204
NACRES:
NA.54

biological source

Bacillus licheniformis

Quality Level

200

type

Type VIII

form

lyophilized powder

specific activity

7-15 units/mg solid

mol wt

27 kDa

purified by

crystallization

solubility

10 mM NaAc (pH 7.5) and 5 mM CaAc: soluble, clear
H2O: soluble, colorless

foreign activity

DNase ≤5.0 Kunitz units/mg solid
RNase ≤0.05 Kunitz units/mg solid

storage temp.

−20°C

Looking for similar products? Visit Product Comparison Guide

General description

The enzyme is found to be stable at pH 8-10, retaining activity of up to 90% for 24 hours. It shows maximum activity at temperatures between 55-60 °C.

Specificity

Subtilisin A is a member of the Serine S8 Endoproteinase family. It has broad specificity with a preference for a large uncharged residue in the P1 position. It hydrolyzes native and denatured proteins, and is active under alkaline conditions.

Application

Non-specific Protease Activity Assay Video
The product has been used with other enzymes for in situ proteolysis to produce crystals suitable for structure determination. It has also been used in the process of isolation of subsarcolemmal (SS) and intermyofibrillar (IMF) mitochondria that can be used for functional in vitro studies.
This is a proteolytic enzyme isolated from the fermentation of Bacillus licheniformis. It is a serine endoproteinase with a broad specificity towards native and denatured proteins, and is active under alkaline conditions.

Biochem/physiol Actions

Protease catabolizes proteins by hydrolysis of peptide bonds. Proteases are inactivated by serine active-site inhibitors, such as phenylmethylsulfonyl fluoride (PMSF) and diisopropylfluorophosphate. Protease, Product P5380, is a serine endoproteinase with a broad specificity towards native and denatured proteins, and is active under alkaline conditions. It is active in some organic solvents such as dry octane.

Physical properties

Subtilisin is a non-glycosylated single polypeptide chain without disulfide bonds and has a molecular weight of 27 KDa.

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).

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Marie Deprez et al.
American journal of respiratory and critical care medicine, 202(12), 1636-1645 (2020-07-30)
Rationale: The respiratory tract constitutes an elaborate line of defense that is based on a unique cellular ecosystem.Objectives: We aimed to investigate cell population distributions and transcriptional changes along the airways by using single-cell RNA profiling.Methods: We have explored the
L Proctor et al.
Gynecologic oncology, 146(3), 596-602 (2017-06-26)
We sought to determine whether DNA ploidy correlates with the four molecular subgroups of endometrial carcinoma (EC) as determined using ProMisE (Proactive Molecular Risk Classifier for Endometrial Cancer). 90 cases of EC previously characterized by clinicopathological parameters, outcomes, and ProMisE
Christoph Schiklenk et al.
The Journal of cell biology, 217(7), 2383-2401 (2018-05-08)
Although the formation of rod-shaped chromosomes is vital for the correct segregation of eukaryotic genomes during cell divisions, the molecular mechanisms that control the chromosome condensation process have remained largely unknown. Here, we identify the C2H2 zinc-finger transcription factor Zas1
Michael L Mucenski et al.
Scientific reports, 9(1), 4557-4557 (2019-03-16)
The uterus is a remarkable organ that must guard against infections while maintaining the ability to support growth of a fetus without rejection. The Hoxa10 and Hoxa11 genes have previously been shown to play essential roles in uterus development and
Tommi Kotila et al.
Nature communications, 9(1), 1892-1892 (2018-05-16)
Actin polymerization powers key cellular processes, including motility, morphogenesis, and endocytosis. The actin turnover cycle depends critically on "re-charging" of ADP-actin monomers with ATP, but whether this reaction requires dedicated proteins in cells, and the underlying mechanism, have remained elusive.
View All Related Papers

Protocols

Enzymatic Assay of Protease Using Casein As a Substrate

To standardize a procedure for the enzymatic assay of Protease using Casein as a substrate at Sigma-Aldrich St. Louis.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service