Acrosin

(biochemistry) A proteolytic enzyme located in the acrosome of a spermatozoon; thought to be involved in penetration of the egg.

A proteinase that is contained in spermatozoa.

One of the enzymes in the acrosome on the head of a mammalian spermatozoon. Involved in the penetration of the zona pellucida of the ovum by the spermatozoon.

acrosin
Identifiers
Symbol	ACR
Entrez	49
HUGO	126
OMIM	102480
RefSeq	NM_001097
UniProt	P10323
Other data
EC number	3.4.21.10
Locus	Chr. 22 q13.3

Acrosin (EC 3.4.21.10) is a digestive enzyme that acts as a protease.

Acrosin is released from the acrosome of spermatozoa as a consequence of the acrosome reaction.

External links

• MeSH Acrosin

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v • d • e Endopeptidases: serine proteases/serine endopeptidases (EC 3.4.21) Digestive enzymes Enteropeptidase · Trypsin · Chymotrypsin · Elastase (Neutrophil, Pancreatic) Coagulation factors: Thrombin · Factor VIIa · Factor IXa · Factor Xa · Factor XIa · Factor XIIa · Kallikrein (PSA, KLK1, KLK2, KLK3, KLK4, KLK5, KLK6, KLK7, KLK8, KLK9, KLK10, KLK11, KLK12, KLK13, KLK14, KLK15) fibrinolysis: Plasmin · Plasminogen activator (Tissue plasminogen activator · Urinary plasminogen activator) Complement system Factor B · Factor D · Factor I · MASP (MASP1, MASP2) · C3-convertase Other immune system Chymase · Granzyme · Tryptase · Proteinase 3/Myeloblastin Venombin Ancrod · Batroxobin Other Acrosin · Prolyl endopeptidase · Pronase · Proprotein convertases (1, 2) · Reelin · Subtilisin/Furin · Streptokinase · S1P · Cathepsin (A, G)

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