Choriolysin H (EC 3.4.24.67, teleost hatching enzyme (component), high choriolytic enzyme (HCE)) is an enzyme.^[1]^[2]^[3]^[4] This enzyme catalyses the following chemical reaction

Hydrolysis of the inner layer of fish egg envelope. Also hydrolysis of casein and small molecule substrates such as succinyl-Leu-Leu-Val-Tyr-7-(4-methyl)coumarylamide

This enzyme is present in teleost fish Oryzias latipes.^[5]

References

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^ Yasumasu S, Iuchi I, Yamagami K (February 1989). "Purification and partial characterization of high choriolytic enzyme (HCE), a component of the hatching enzyme of the teleost, Oryzias latipes". Journal of Biochemistry. 105 (2): 204–11. PMID 2656664.

^ Yasumasu S, Katow S, Umino Y, Iuchi I, Yamagami K (July 1989). "A unique proteolytic action of HCE, a constituent protease of a fish hatching enzyme: tight binding to its natural substrate, egg envelope". Biochemical and Biophysical Research Communications. 162 (1): 58–63. doi:10.1016/0006-291x(89)91961-x. PMID 2751672.

^ Yasumasu S, Yamada K, Akasaka K, Mitsunaga K, Iuchi I, Shimada H, Yamagami K (October 1992). "Isolation of cDNAs for LCE and HCE, two constituent proteases of the hatching enzyme of Oryzias latipes, and concurrent expression of their mRNAs during development". Developmental Biology. 153 (2): 250–8. doi:10.1016/0012-1606(92)90110-3. PMID 1397682.

^ Lee KS, Yasumasu S, Nomura K, Iuchi I (February 1994). "HCE, a constituent of the hatching enzymes of Oryzias latipes embryos, releases unique proline-rich polypeptides from its natural substrate, the hardened chorion". FEBS Letters. 339 (3): 281–4. doi:10.1016/0014-5793(94)80431-1. PMID 8112467.

^ Yamagami K (November 1972). "Isolation of a choriolytic enzyme (hatching enzyme) of the teleost, Oryzias latipes". Developmental Biology. 29 (3): 343–8. doi:10.1016/0012-1606(72)90074-7. PMID 4652273.

External links

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Choriolysin+H at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

Proteases: metalloendopeptidases (EC 3.4.24)

ADAM proteins

Alpha secretases
- ADAM9
- ADAM10
- ADAM17
- ADAM19
ADAM2
ADAM7
ADAM8
ADAM11
ADAM12
ADAM15
ADAM18
ADAM22
ADAM23
ADAM28
ADAM33
ADAMTS1
ADAMTS2
ADAMTS3
ADAMTS4
ADAMTS5
ADAMTS8
ADAMTS9
ADAMTS10
ADAMTS12
ADAMTS13

Matrix metalloproteinases

Other

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)

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