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Merck

P6534

Sigma-Aldrich

Phospholipase A2 from porcine pancreas

ammonium sulfate suspension, ≥600 units/mg protein

Sinónimos:

Lecithinase A, PLA2, Phosphatidylcholine 2-acylhydrolase

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About This Item

Número de CAS:
Comisión internacional de enzimas:
EC Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.32

form

ammonium sulfate suspension

specific activity

≥600 units/mg protein

UniProt accession no.

storage temp.

2-8°C

Gene Information

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General description

Phospholipase A2 is a small disulfide-rich protein having 124 residues. It is a calcium-dependent enzyme.

Application

Phospholipase A2 has been used in phospholipase assay and to determine rat renal proximal tubular segments (PTS) viability during oxygenation and hypoxia-reoxygenation.

Biochem/physiol Actions

It has a high catalytic activity on aggregated substrates compared to monomeric substrates.
Hydrolyzes the β-ester bond of zwitterionic glycerophospholipids. Preferred substrates are phosphatidylcholine, phosphatidylethanolamine, and their plasmalogen analogues. Phosphatidylinositol and phosphatidylserine are also hydrolyzed. Aggressively attacks phospholipids in membranes of intact cells.

Unit Definition

One unit will hydrolyze 1.0 μmole of soybean L-α-phosphatidylcholine to L-α-lysophosphatidylcholine and a fatty acid per min at pH 8.0 at 37 °C.

Physical form

Suspension in 3.2 M (NH4)2SO4 solution, pH 5.5

Analysis Note

Protein determined by biuret.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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Los clientes también vieron

R A Zager et al.
Proceedings of the National Academy of Sciences of the United States of America, 90(17), 8297-8301 (1993-09-01)
During hypoxic or ischemic renal tubular injury, phospholipase A2 (PLA2) induces membrane deacylation, causing fatty acid accumulation and phospholipid breakdown. Because these changes can compromise cellular integrity, PLA2 activity has been widely proposed as a critical mediator of hypoxic renal
Knut Kölbel et al.
Biophysical chemistry, 206, 12-21 (2015-06-29)
Porcine pancreatic phospholipase A2, a small and disulfide rich protein, is extremely resistant against chemically or thermally induced unfolding. Despite this marked resistance, the protein displays broad unfolding transitions resulting in comparatively low apparent thermodynamic stability. Broad unfolding transitions may
B van den Berg et al.
The EMBO journal, 14(17), 4123-4131 (1995-09-01)
The lipolytic enzyme phospholipase A2 (PLA2) is involved in the degradation of high-molecular weight phospholipid aggregates in vivo. The enzyme has very high catalytic activities on aggregated substrates compared with monomeric substrates, a phenomenon called interfacial activation. Crystal structures of
Elena Venuti et al.
Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society, 16(6), 763-770 (2017-07-26)
Bile salt stimulated lipase (BSSL; Enzyme Commission (EC) number 3.1.1.13) has been a candidate triglyceridase for improving enzyme therapy for pancreatic insufficiency; however, its efficacy is near absent. We hypothesise that similarly to pancreatic lipase, BSSL is inhibited by phospholipids
A A Grippo et al.
Journal of reproduction and fertility, 102(1), 87-93 (1994-09-01)
Cholesterol and phospholipid concentrations and phospholipase activity were measured in fluid from cannulae collected from the bovine oviductal isthmus and ampulla at different stages of the oestrous cycle. The cholesterol concentration and cholesterol normalized by protein were significantly (P =

Artículos

Instructions for working with enzymes supplied as ammonium sulfate suspensions

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