E8140

Elastase from human leukocytes

lyophilized powder, ≥50 units/mg protein (Bradford)

• Sinónimos: Lysosomal elastase
• Número de CAS: 9004-06-2
• Comisión internacional de enzimas: 3.4.21.37 (BRENDA, IUBMB)
• Número MDL: MFCD00130997
• Código UNSPSC: 12352204
• NACRES: NA.54

Propiedades

• origen biológico: human leucocytes
• Nivel de calidad: 200
• Formulario: lyophilized powder
• actividad específica: ≥50 units/mg protein (Bradford)
• mol peso: 29 kDa
• Nº de acceso UniProt: P08246
• Condiciones de envío: dry ice
• temp. de almacenamiento: −20°C
• Información sobre el gen: human ... ELA2(1991) , ELANE(1991)

Descripción

Descripción general

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.

Aplicación

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

Elastase has been used to digest fibronectin. The results were compared with fibronectin digestion by crude human leukocyte homogenate to examine the presence of fibronectin peptides in saliva of patients with Sjögren′s syndrome. It has also been used as a reference to determine the elastase activity in cell lysates. This study examined the effect of all-trans retinoic acid on procoagulant and fibrinolytic activities of cultured blast cells. These blast cells were from patients with acute promyelocytic leukemia.

Acciones bioquímicas o fisiológicas

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.

Propiedades físicas

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

Definición de unidad

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.

Forma física

Lyophilized from 0.05 M sodium acetate (pH 5.5) and 0.6 M NaCl

Información de seguridad

• Código de clase de almacenamiento: 13 - Non Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable