P01023.1
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NCBI GenBank Nucleotide #
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UniProt Primary Accession #
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UniProt Secondary Accession #
UniProt Related Accession #
NCBI Official Full Name
Alpha-2-macroglobulin
NCBI Official Synonym Full Names
alpha-2-macroglobulin
NCBI Official Synonym Symbols
A2MD; CPAMD5; FWP007; S863-7; DKFZp779B086 [Similar Products]
NCBI Protein Information
alpha-2-macroglobulin; alpha-2-M; OTTHUMP00000196829; C3 and PZP-like alpha-2-macroglobulin domain-containing protein 5
UniProt Protein Name
Alpha-2-macroglobulin
UniProt Synonym Protein Names
C3 and PZP-like alpha-2-macroglobulin domain-containing protein 5
UniProt Synonym Gene Names
UniProt Entry Name
A2MG_HUMAN
NCBI Summary for A2M
Alpha-2-macroglobulin is a protease inhibitor and cytokine transporter. It inhibits many proteases, including trypsin, thrombin and collagenase. A2M is implicated in Alzheimer disease (AD) due to its ability to mediate the clearance and degradation of A-beta, the major component of beta-amyloid deposits. [provided by RefSeq]
UniProt Comments for A2M
Function: 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 structure: Homotetramer; disulfide-linked. Ref.8 Ref.10
Subcellular location: Secreted Ref.8.
Tissue specificity: Secreted in plasma. Ref.8
Developmental stage: Contrary to the rat protein, which is an acute phase protein, this protein is always present at high levels in circulation.
Sequence similarities: Belongs to the protease inhibitor I39 (alpha-2-macroglobulin) family. [View classification]
Sequence caution: The sequence AAT02228.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally shortened.The sequence BAD92851.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally shortened.
Product References and Citations for anti-A2M antibody
1. Salvesen G, Pizzo SV; Proteinase Inhibitors: alpha-Macroglobulins, Serpins and Kunins; in Hemostasis and Thrombosis, 3rd Edition, eds. RW Colman, J Hirsh, VJ Marder and EW Salzman, pp. 241-258, J.B. Lippincott Co., Philadelphia PA, USA, 1994. 2. Barrett J; alpha2Macroglobulin; Methods in Enzymology, 80, pp 737-754, 1981 Larsson LJ, Neuenschwander DE, Strickland DK; Reaction of Proteinases with alpha2Macroglobulin: Evidence for Alternate Reaction Pathways in the Inhibition of Trypsin; Biochemistry 28, pp 7636-7643, 1989. 3. Schmidt B, Mitchell L, Ofosu FA, Andrew M; alpha2Macroglobulin is an Important Progressive Inhibitor of Thrombin in Neonatal and Infant Plasma; Thromb Haemostas 62, pp 1074-1077, 1989. 4. Hoogendoorn H, Toh CH, Nesheim ME, Giles AR; alpha2Macroglobulin Binds and Inhibits Activated Protein C; Blood 78, pp2283-2290, 1991.
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Products associated with anti-A2M antibody
Pathways associated with anti-A2M antibody
Diseases associated with anti-A2M antibody
Organs/Tissues associated with anti-A2M antibody
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