Zona pellucida sperm-binding protein 4 (Zona pellucida glycoprotein 4) (Zp-4) (Zona pellucida protein B) [Cleaved into: Processed zona pellucida sperm-binding protein 4]
1_MWLLR 6_ CVLLC 11_ VSLSL 16_ AVSGQ 21_ HKPEA 26_ PDYSS 31_ VLHCG 36_ PWSFQ 41_ FAVNL 46_ NQEAT 51_ SPPVL 56_ IAWDN 61_ QGLLH 66_ ELQND 71_ SDCGT 76_ WIRKG 81_ PGSSV 86_ VLEAT 91_ YSSCY 96_ VTEWD 101_ SHYIM 106_ PVGVE 111_ GAGAA 116_ EHKVV 121_ TERKL 126_ LKCPM 131_ DLLAR 136_ DAPDT 141_ DWCDS 146_ IPARD 151_ RLPCA 156_ PSPIS 161_ RGDCE 166_ GLGCC 171_ YSSEE 176_ VNSCY 181_ YGNTV 186_ TLHCT 191_ REGHF 196_ SIAVS 201_ RNVTS 206_ PPLLL 211_ DSVRL 216_ ALRND 221_ SACNP 226_ VMATQ 231_ AFVLF 236_ QFPFT 241_ SCGTT 246_ RQITG 251_ DRAVY 256_ ENELV 261_ ATRDV 266_ KNGSR 271_ GSVTR 276_ DSIFR 281_ LHVSC 286_ SYSVS 291_ SNSLP 296_ INVQV 301_ FTLPP 306_ PFPET 311_ QPGPL 316_ TLELQ 321_ IAKDK 326_ NYGSY 331_ YGVGD 336_ YPVVK 341_ LLRDP 346_ IYVEV 351_ SILHR 356_ TDPYL 361_ GLLLQ 366_ QCWAT 371_ PSTDP 376_ LSQPQ 381_ WPILV 386_ KGCPY 391_ IGDNY 396_ QTQLI 401_ PVQKA 406_ LDLPF 411_ PSHHQ 416_ RFSIF 421_ TFSFV 426_ NPTVE 431_ KQALR 436_ GPVHL 441_ HCSVS 446_ VCQPA 451_ ETPSC 456_ VVTCP 461_ DLSRR 466_ RNFDN 471_ SSQNT 476_ TASVS 481_ SKGPM 486_ ILLQA 491_ TKDPP 496_ EKLRV 501_ PVDSK 506_ VLWVA 511_ GLSGT 516_ LILGA 521_ LLVSY 526_ LAVKK 531_QKSCP
1: Component of the zona pellucida, an extracellular matrix surrounding oocytes which mediates sperm binding, induction of the acrosome reaction and prevents post-fertilization polyspermy. The zona pellucida is composed of 3 to 4 glycoproteins, ZP1, ZP2, ZP3, and ZP4. ZP4 may act as a sperm receptor