A3428

Aprotinin

Name: Aprotinin
Brand: SIGMA

3-8 TIU/mg solid, lyophilized powder, suitable for cell culture

Synonym(s):

BPTI, Bovine pancreatic trypsin inhibitor, Trasylol, Trypsin inhibitor (basic)

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About This Item

Empirical Formula (Hill Notation):

C₂₈₄H₄₃₂N₈₄O₇₉S₇

CAS Number:

9087-70-1

Molecular Weight:

6511.44

UNSPSC Code:

12352200

eCl@ss:

32190102

NACRES:

NA.32

EC Number:

232-994-9

MDL number:

MFCD00130541

Product Name

Aprotinin from bovine lung, lyophilized powder, 3-8 TIU/mg solid, BioReagent, suitable for cell culture

SMILES string

S1SCC2NC(=O)CNC(=O)CNC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C5NC(=O)C(NC(=O)CNC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C9N(CCC9)C(=O)CNC(=O)C(NC(=O)C(NC(=O)C%11N(CCC%11)C(=O

InChI key

ZPNFWUPYTFPOJU-UHFFFAOYSA-N

biological source

bovine lung

product line

BioReagent

form

lyophilized powder

specific activity

3-8 TIU/mg solid

mol wt

~6,500

technique(s)

cell culture | mammalian: suitable

solubility

H₂O: 5 mg/mL

UniProt accession no.

P00974

storage temp.

2-8°C

Quality Level

200

Gene Information

cow ... PTI(404172)

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Application

Aprotinin from bovine lung has been used in insulin and glucagon-like peptide-1 assay. It has also been used a in western blotting.

Aprotinin is largely used as an inhibitor of trypsin.

Biochem/physiol Actions

Aprotinin is a competitive serine protease inhibitor that forms stable complexes with and blocks the active sites of enzyme. This binding is reversible, and most aprotinin-protease complexes will dissociate at extreme pH levels >10 or <3. Structurally, Aprotinin is a monomeric globular protein derived from bovine lung that consists of 58 amino acids, arranged in a single polypeptide chain with three crosslinking disulfide bridges.

Aprotinin is a natural polypeptide of 58 amino acids. It possesses hemostatic/antiplasmin action and helps to reduce bleeding during surgeries. This prevents the necessity of blood transfusion.

Other Notes

One Trypsin Inhibitor Unit (TIU) will decrease the activity of two trypsin units by 50%, where one trypsin unit will hydrolyze 1.0 μmole of N-alpha-benzoyl-DL-arginine p-nitroanilide per minute at pH 7.8 and 25°C. Another commonly used unit is the KIU, with 1 TIU = 1,300 KIU.

When benzoyl-L-arginine ethyl ester (BAEE) is used as substrate one BAPNA unit is approx. 45BAEE μmolar units at pH8.0 at 25°C or approx. 9,000 BAEE A₂₅₃ units at pH7.6 at 25°C.

Preparation Note

This product is a lyophilized powder that has been cell culture tested. It has an activity of 3-7 TIU/mg.

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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