Skip to Content
Merck
All Photos(3)

Key Documents

View All Documentation

A4529

Sigma-Aldrich

Aprotinin

3-7 TIU/mg solid, lyophilized powder

Synonym(s):

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

Sign Into View Organizational & Contract Pricing
All Photos(3)

About This Item

Empirical Formula (Hill Notation):
C284H432N84O79S7
CAS Number:
9087-70-1
Molecular Weight:
6511.44
EC Number:
232-994-9
MDL number:
MFCD00130541
UNSPSC Code:
12352202
NACRES:
NA.54

product name

Aprotinin from bovine lung, lyophilized powder, 3-7 TIU/mg solid

biological source

bovine lung

Quality Level

300

form

lyophilized powder

specific activity

3-7 TIU/mg solid

mol wt

~6,500

solubility

H2O: >10 mg/mL

UniProt accession no.

P00974

storage temp.

2-8°C

InChI key

ZPNFWUPYTFPOJU-UHFFFAOYSA-N

Gene Information

cow ... PTI(404172)

Looking for similar products? Visit Product Comparison Guide

Application

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.

Unit Definition

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.

Preparation Note

This product is an affinity purified lyophilized powder purified to remove trace impurities. It has an activity of 3-7 TIU/mg.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

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

Hemostatic drugs.
P M Mannucci
The New England journal of medicine, 339(4), 245-253 (1998-07-23)
A M Mahdy et al.
British journal of anaesthesia, 93(6), 842-858 (2004-07-28)
Skilful surgery combined with blood-saving methods and careful management of blood coagulation will all help reduce unnecessary blood loss and transfusion requirements. Excessive surgical bleeding causes hypovolaemia, haemodynamic instability, anaemia and reduced oxygen delivery to tissues, with a subsequent increase
Shigeru Hashimoto et al.
Nature communications, 7, 10656-10656 (2016-02-09)
Acquisition of mesenchymal properties by cancer cells is critical for their malignant behaviour, but regulators of the mesenchymal molecular machinery and how it is activated remain elusive. Here we show that clear cell renal cell carcinomas (ccRCCs) frequently utilize the
Min Jae Song et al.
Nature methods, 20(1), 149-161 (2022-12-23)
Age-related macular degeneration (AMD), a leading cause of blindness, initiates in the outer-blood-retina-barrier (oBRB) formed by the retinal pigment epithelium (RPE), Bruch's membrane, and choriocapillaris. The mechanisms of AMD initiation and progression remain poorly understood owing to the lack of
James M Heather et al.
Scientific reports, 9(1), 18558-18558 (2019-12-08)
The study of peptides presented by MHC class I and class II molecules is limited by the need for relatively large cell numbers, especially when studying post-translationally modified or otherwise rare peptide species. To overcome this problem, we pose the
View All Related Papers

Protocols

Enzymatic Assay of Aprotinin

Enzymatic Assay of Aprotinin

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