Entry
Name
pappalysin-1;
insulin-like growth factor binding protein-4 protease;
pregnancy-associated plasma protein-A
Class
Hydrolases;
Acting on peptide bonds (peptidases);
Metalloendopeptidases
BRITE hierarchy
Reaction(IUBMB)
Cleavage of the Met135!Lys bond in insulin-like growth factor binding protein (IGFBP)-4, and the Ser143!Lys bond in IGFBP-5
Comment
A 400-kDa disulfide-linked dimer. Circulates in human pregnancy mainly as a complex with the proform of eosinophil major basic protein, which acts as an inhibitor of the peptidase. The rate of hydrolysis of IGFBP-4 is increased about 20-fold by the presence of insulin-like growth factor (IGF), whereas that of IGFBP-5 is decreased about two-fold. In peptidase family M43.
History
EC 3.4.24.79 created 2003
Orthology
Genes
DRE : 101448000(pappaa) 101448001(pappab)
SRX : 107728218 107731007 107739977 107740823
SANH : 107665047 107667798 107675511
SGH : 107558864 107587665 107595518
CAUA : 113049708 113079934 113084678 113094246
CGIB : 127957189 127957902 127988847 127989619
PTET : 122344673(pappab) 122345907(pappaa)
LROH : 127165709(pappaa) 127165975(pappab)
OMC : 131541760(pappab) 131541768(pappaa)
MAMB : 125267620(pappab) 125267648(pappaa)
CIDE : 127512644 127512989
MASI : 127424307 127425911 127436356 127439584
TROS : 130550246(pappab) 130567861(pappaa)
MANU : 129440782(pappaa) 129440983(pappab)
IPU : 108255326(pappab) 108260258(pappaa)
IFU : 128603790(pappaa) 128625573(pappab)
PHYP : 113531308(pappa) 113542524
SMEO : 124379383(pappaa) 124381027(pappab)
TFD : 113636587(pappaa) 113637553(pappab)
AMEX : 103022238 103040342(pappa)
CMAO : 118814848(pappaa) 118827623(pappab)
EEE : 113573033 113587105(pappa)
SASA : 106563270 106565903
STRU : 115159544 115204089
OMY : 110509814(pappaa) 110522910
SNH : 120021730(pappaa) 120025553
CCLU : 121541684 121582490
ELS : 105008978 105015077(pappa)
AANG : 118207117(pappab) 118213402
PSPA : 121303550 121303634
» show all
Taxonomy
Reference
Authors
Lawrence JB, Oxvig C, Overgaard MT, Sottrup-Jensen L, Gleich GJ, Hays LG, Yates JR 3rd, Conover CA.
Title
The insulin-like growth factor (IGF)-dependent IGF binding protein-4 protease secreted by human fibroblasts is pregnancy-associated plasma protein-A.
Journal
Sequence
Reference
Authors
Chen BK, Overgaard MT, Bale LK, Resch ZT, Christiansen M, Oxvig C, Conover CA.
Title
Molecular regulation of the IGF-binding protein-4 protease system in human fibroblasts: identification of a novel inducible inhibitor.
Journal
Other DBs
ExPASy - ENZYME nomenclature database: 3.4.24.79