EC               Enzyme                                 

oviductal protease
Acting on peptide bonds (peptidases);
Serine endopeptidases
Preferential cleavage at Gly-Ser-Arg373! of glycoprotein gp43 in Xenopus laevis coelemic egg envelope to yield gp41
The egg envelope of the South African clawed frog (Xenopus laevis) is modified during transit of the egg through the pars rectus oviduct, changing the egg envelope from an unfertilizable form to a fertilizable form. This process involves the conversion of glycoprotein gp43 to gp41 (ZPC) by the pars recta protease oviductin. It is thought that the enzymically active protease molecule comprises the N-terminal protease domain coupled to two C-terminal CUB domains, which are related to the mammalian spermadhesin molecules implicated in mediating sperm-envelope interactions [2]. The enzyme is also found in the Japanese toad (Bufo japonicus) [3]. Belongs in peptidase family S1.
EC created 2007
K20111  oviductin
FCA: 101094990(PRSS45)
MDO: 100027745(OVCH2)
SHR: 100916932(OVCH2)
PCW: 110214514 110221029(OVCH2)
OAA: 100076426(OVCH2)
GGA: 769290(OVCH2)
MGP: 100541355(OVCH2)
CJO: 107314584(OVCH2)
NMEL: 110400771(OVCH2)
APLA: 101798316(OVCH2)
ACYG: 106040936(OVCH2)
TGU: 101233893(OVCH2)
SCAN: 103822216(OVCH2)
FAB: 101811575(OVCH2)
ETL: 114056538(OVCH2)
FPG: 101910452(OVCH2)
FCH: 102053250(OVCH2)
CLV: 102088414(OVCH2)
EGZ: 104123416(OVCH2)
NNI: 104009438(OVCH2)
ACUN: 113481338(OVCH2)
PADL: 103925731(OVCH2)
AAM: 106497080(OVCH2)
ASN: 102383299(OVCH2)
PSS: 102457326(OVCH2)
CMY: 102933552(OVCH2)
CPIC: 101937537(OVCH2)
ACS: 100566043(ovch2)
PVT: 110080913(OVCH2)
PBI: 103050766(OVCH2)
PMUA: 114597670(OVCH2)
GJA: 107111731(OVCH2)
XLA: 398108(ovch2.S)
XTR: 100496902(ovch2)
NPR: 108789647
DRE: 101884131
SRX: 107745938
SANH: 107686667
SGH: 107573059(ovch1)
CCAR: 109109152
IPU: 108269171(ovch1)
AMEX: 103035632
EEE: 113582490
LCO: 104933350
NCC: 104967868
ONL: 102078047
XCO: 114134724
PRET: 103466254
POV: 109644191
LCF: 108902303
BPEC: 110169478
MALB: 109962594
SASA: 106561585(ovch2)
OTW: 112235293
SALP: 111961034
ELS: 105018253
PKI: 111858128
LCM: 102365172(OVCH2)
CMK: 103175111(ovch2)
BFO: 118412348
CIN: 100184879
APLC: 110980135
AALB: 109429147
CCAL: 108628700
NVI: 100678261
FCD: 110863444
TUT: 107370120
CRG: 105341991
NVE: 5519957
EPA: 110254161
AMIL: 114976087
HMG: 100208297
 » show all
1  [PMID:1581303]
Hardy DM, Hedrick JL.
Oviductin. Purification and properties of the oviductal protease that processes the molecular weight 43,000 glycoprotein of the Xenopus laevis egg envelope.
Biochemistry 31:4466-72 (1992)
2  [PMID:10084976]
Lindsay LL, Wieduwilt MJ, Hedrick JL
Oviductin, the Xenopus laevis oviductal protease that processes egg envelope glycoprotein gp43, increases sperm binding to envelopes, and is translated as part of an unusual mosaic protein composed of two protease and several CUB domains.
Biol Reprod 60:989-95 (1999)
3  [PMID:11846486]
Hiyoshi M, Takamune K, Mita K, Kubo H, Sugimoto Y, Katagiri C
Oviductin, the oviductal protease that mediates gamete interaction by affecting the vitelline coat in Bufo japonicus: its molecular cloning and analyses of expression and posttranslational activation.
Dev Biol 243:176-84 (2002)
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