E8140
Elastase from human leukocytes
lyophilized powder, ≥50 units/mg protein (Bradford)
Synonym(s):
Lysosomal elastase
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About This Item
CAS Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54
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biological source
human leucocytes
Quality Level
form
lyophilized powder
specific activity
≥50 units/mg protein (Bradford)
mol wt
29 kDa
UniProt accession no.
shipped in
dry ice
storage temp.
−20°C
Gene Information
human ... ELA2(1991) , ELANE(1991)
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General description
Elastase is a proteolytic enzyme. It is a member of the subgroup named, peptidyl peptide hydrolases. It is a major anatomic constituent of arteries. It is mainly found in the pancreas and pancreatic juice of various birds and mammals. It is also present in human serum, granulocytes and erythrocytes.
Application
Elastase from human leukocytes has been used:
- to measure serum elastase activity
- in proteolytic digestion of fibronectin and salivary glands
- in neutrophil elastase (NE) activity assay
- cell-free NE digestion of E-cadherin
- scratch wound assay
- in a study that determined that fragments of Nle3-angiotensin(1-7) accelerate healing in dermal models
Biochem/physiol Actions
Elastase enzyme is capable of releasing soluble peptides from insoluble elastin fibers with the help of a proteolytic process. It can stimulate disintegration of the axoneme with the help of adenosine triphosphate (ATP). Unlike pancreatic elastase the leukocyte enzyme has a preferential cleavage for the carboxyl side of valine, but will also cleave to a lesser extent after alanine. Natural substrates include elastin, cartilage proteoglycans, collagen types I, II, II and IV, and fibronectin.
Physical properties
Leukocyte elastase is a 29 kDa serine endoprotease of the Proteinase S1 Family. It exists as a single 238 amino acid-peptide chain with four disulfide bonds. It contains two or thee N-linked glycans of variable composition which account for its three major isoforms.
Isoelectric point: pI = 8.77 - 9.55
Isoelectric point: pI = 8.77 - 9.55
Unit Definition
One unit will release one nanomole of p-nitrophenol per sec from BOC-L-alanine p-nitrophenyl ester at pH 6.5 at 37 °C.
Physical form
Lyophilized from 0.05 M sodium acetate (pH 5.5) and 0.6 M NaCl
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Storage Class
13 - Non Combustible Solids
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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