Entry
Name
pyroglutamyl-peptidase II;
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
Class
Hydrolases;
Acting on peptide bonds (peptidases);
Omega peptidases
BRITE hierarchy
Reaction(IUBMB)
Release of the N-terminal pyroglutamyl group from pGlu!His-Xaa tripeptides and pGlu!His-Xaa-Gly tetrapeptides
Comment
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)
History
EC 3.4.19.6 created 1992
Orthology
K01306 pyroglutamyl-peptidase II
Genes
XLA : 108705027(trhde.L) 108713143(trhde.S)
DRE : 100006808(trhde.1) 562409(trhde.2)
SRX : 107710667 107710683 107737850 107737851
SANH : 107666938 107692246 107694150(trhde)
SGH : 107556776 107556777 107590972
CCAR : 109064695 109088706
CAUA : 113048225 113061661
CGIB : 127956899 127956968 127972926
PTET : 122342787 122343504
PPRM : 120476935(trhde.1) 120476938
MAMB : 125245225 125246445
CIDE : 127511012 127511335
MASI : 127435401 127435402 127435403 127436826 127436827
TROS : 130547662 130547663 130548116
MANU : 129432078 129432171
IPU : 108279435 108279600 108279602
IFU : 128622956 128622957 128622969
SMEO : 124400994 124400999
SFM : 108936360(trhde) 108942250
PKI : 111851702(trhde) 111858635
AANG : 118219164 118231096
PSPA : 121318038 121320055
ARUT : 117414806 117419986
BBEL : 109468363 109468583
PGC : 109858688 109859933 109860632 109860980
RMP : 119164395 119164400 119165349 119165350
» show all
Taxonomy
Reference
Authors
Bauer K, Nowak P.
Title
Characterization of a thyroliberin-degrading serum enzyme catalyzing the hydrolysis of thyroliberin at the pyroglutamyl-histidine bond.
Journal
Reference
Authors
O'Connor B, O'Cuinn G
Title
Purification of and kinetic studies on a narrow specificity synaptosomal membrane pyroglutamate aminopeptidase from guinea-pig brain.
Journal
Reference
Authors
Wilk S, Wilk EK
Title
Pyroglutamyl peptidase II, a thyrotropin releasing hormone degrading enzyme: purification and specificity studies of the rabbit brain enzyme.
Journal
Other DBs
ExplorEnz - The Enzyme Database: 3.4.19.6
ExPASy - ENZYME nomenclature database: 3.4.19.6