| EC |
3.4.19.6 |
| Accepted name: |
pyroglutamyl-peptidase II |
| Reaction: |
Release of the N-terminal pyroglutamyl group from pGlu┼His-Xaa tripeptides and pGlu┼His-Xaa-Gly tetrapeptides |
| Other name(s): |
thyroliberinase; pyroglutamyl aminopeptidase II; thyrotropin-releasing factor pyroglutamate aminopeptidase; pyroglutamate aminopeptidase II; pyroglutamyl peptidase II; thyroliberin-hydrolyzing pyroglutamate aminopeptidase; thyrotropin-releasing hormone-degrading pyroglutamate aminopeptidase; thyrotropin-releasing hormone-degrading peptidase; TRH aminopeptidase |
| Comments: |
Highly specific for thyrotropin releasing hormone (pyroglutamyl-histidyl-prolylamide). Will not cleave the pyroglutamyl-histidyl bond of luteinizing hormone releasing hormone. Found in serum and brain. Inhibited by metal chelators. In peptidase family M1 (membrane alanyl aminopeptidase family) |
| Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc, MEROPS, CAS registry number: 60063-88-9 |
| References: |
| 1. |
Bauer, K. and Nowak, P. Characterization of a thyroliberin-degrading serum enzyme catalyzing the hydrolysis of thyroliberin at the pyroglutamyl-histidine bond. Eur. J. Biochem. 99 (1979) 239–246. [DOI] [PMID: 115687] |
| 2. |
O'Connor, B. and O'Cuinn, G. Purification of and kinetic studies on a narrow specifity synaptosomal membrane pyroglutamate aminopeptidase from guinea-pig brain. Eur. J. Biochem. 150 (1985) 47–52. [DOI] [PMID: 2862039] |
| 3. |
Wilk, S. and Wilk, E.K. Pyroglutamyl peptidase II, a thyrotropin releasing hormone degrading enzyme: purification and specificity studies of the rabbit brain enzyme. Neurochem. Int. 15 (1989) 81–89. [PMID: 20504468] |
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| [EC 3.4.19.6 created 1992] |
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