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Details on Person UniProt:P01023 A2M

Class:IdReferenceGeneProduct:49292
_chainChangeLogsignal peptide:1-23 added on Fri February 6 2015;chain:24-1474 added on Fri February 6 2015
_displayNameUniProt:P01023 A2M
_timestamp2024-11-03 19:44:27
chainsignal peptide:1-23
chain:24-1474
checksum0A46DF09EFD3CF40
commentFUNCTION Is able to inhibit all four classes of proteinases by a unique 'trapping' mechanism. This protein has a peptide stretch, called the 'bait region' which contains specific cleavage sites for different proteinases. When a proteinase cleaves the bait region, a conformational change is induced in the protein which traps the proteinase. The entrapped enzyme remains active against low molecular weight substrates (activity against high molecular weight substrates is greatly reduced). Following cleavage in the bait region, a thioester bond is hydrolyzed and mediates the covalent binding of the protein to the proteinase.SUBUNIT Homotetramer; disulfide-linked.INTERACTION Secreted in plasma.DEVELOPMENTAL STAGE Unlike the rat protein, which is an acute phase protein, this protein is always in circulation at high levels.SIMILARITY Belongs to the protease inhibitor I39 (alpha-2-macroglobulin) family.SEQUENCE CAUTION Extended N-terminus.SEQUENCE CAUTION Extended N-terminus.ONLINE INFORMATION Alpha-2 macroglobulin entry
descriptionrecommendedName: Alpha-2-macroglobulin shortName: Alpha-2-M alternativeName: C3 and PZP-like alpha-2-macroglobulin domain-containing protein 5
geneNameA2M
CPAMD5
FWP007
identifierP01023
isSequenceChangedFALSE
keyword3D-structure
Bait region
Direct protein sequencing
Disulfide bond
Glycoprotein
Isopeptide bond
Protease inhibitor
Proteomics identification
Reference proteome
Secreted
Serine protease inhibitor
Signal
Thioester bond
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
nameA2M
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:8957927] ENSEMBL:ENSG00000175899 A2M [Homo sapiens]
secondaryIdentifierA2MG_HUMAN
Q13677
Q59F47
Q5QTS0
Q68DN2
Q6PIY3
Q6PN97
sequenceLength1474
species[Species:48887] Homo sapiens
(referenceEntity)[EntityWithAccessionedSequence:49291] A2M [extracellular region] [Homo sapiens]
[EntityWithAccessionedSequence:139834] A2M [platelet alpha granule lumen] [Homo sapiens]
[EntityWithAccessionedSequence:200618] A2M [cytosol] [Homo sapiens]
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No pathways have been reviewed or authored by UniProt:P01023 A2M (49292)