Spermosin

↑ Sawada, H., Yokosawa, H. and Ishii, S. (1984). "Purification and characterization of two types of trypsin-like enzymes from sperm of the ascidian (Prochordata) Halocynthia roretzi. Evidence for the presence of spermosin, a novel acrosin-like enzyme". J. Biol. Chem. 259: 2900–2904. PMID 6365918.
↑ Sawada, H., Yokosawa, H., Someno, T., Saino, T. and Ishii, S. (1984). "Evidence for the participation of two sperm proteases, spermosin and acrosin, in fertilization of the ascidian, Halocynthia roretzi: inhibitory effects of leupeptin analogs on enzyme activities and fertilization". Dev. Biol. 105: 246–249. doi:10.1016/0012-1606(84)90281-1. PMID 6381175.
↑ Sawada, H., Iwasaki, K., Kihara-Negishi, F., Ariga, H. and Yokosawa, H. (1996). "Localization, expression, and the role in fertilization of spermosin, an ascidian sperm trypsin-like protease". Biochem. Biophys. Res. Commun. 222: 499–504. doi:10.1006/bbrc.1996.0773. PMID 8670234.
↑ Sawada, H. and Someno, T. (1996). "Substrate specificity of ascidian sperm trypsin-like proteases, spermosin and acrosin". Mol. Reprod. Dev. 45: 240–243. doi:10.1002/(sici)1098-2795(199610)45:2<240::aid-mrd18>3.3.co;2-e. PMID 8914083.

External links

Spermosin at the US National Library of Medicine Medical Subject Headings (MeSH)

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 Prostasin Reelin Subtilisin/Furin Streptokinase S1P Cathepsin A G

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

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