Alpha-1,3-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase-like protein MGAT4D (N-acetylglucosaminyltransferase MGAT1 inhibitory protein) (GlcNAcT-I inhibitory protein) (GnT1IP)
1_MRTKQ 6_ VNLLI 11_ TLVAV 16_ ALFSF 21_ SCFSI 26_ YRITQ 31_ TNNQL 36_ INCRN 41_ HILEF 46_ KENML 51_ HLRNK 56_ TEKNT 61_ QEMMK 66_ VLNRM 71_ KYEIT 76_ KREIL 81_ SGNLV 86_ AQKAD 91_ ILNKN 96_ ETVSN 101_ TFEDL 106_ KFFFP 111_ HLRKE 116_ GRIYP 121_ DVIIG 126_ KGKTG 131_ VSFAL 136_ GISTV 141_ NRGNY 146_ SYLKQ 151_ TLTSV 156_ VSRMT 161_ LSQEK 166_ DSVVI 171_ VLVAD 176_ SNEDY 181_ LHSVV 186_ KMITK 191_ KFKRQ 196_ VRSGS 201_ LEVIS 206_ IPAFL 211_ YSSML 216_ NAKHL 221_ AEASQ 226_ KLASW 231_ RIKQV 236_ LDFCI 241_ LLLYA 246_ QPKAK 251_ YYLQL 256_ EDDII 261_ AKEMY 266_ FTKIT 271_ DFVGN 276_ ISSNN 281_ WFFIE 286_ FSMLG 291_ FIGKL 296_ FRSED 301_ LTHFV 306_ RFFLM 311_ FYKEK 316_ PIDWL 321_ LNDIF 326_ QVKVC 331_ DAGED 336_ LRNCM 341_ KRKKQ 346_ IRIQY 351_ KPSLF 356_ QHVGI 361_ HSSFP 366_RKEQY
1: May play a role in male spermatogenesis. In vitro acts as inhibitor of MGAT1 activity causing cell surface proteins to carry mainly high mannose N-glycans. The function is mediated by its lumenal domain and occurs specifically in the Golgi. A catalytic glucosyltransferase activity is not detected. May be involved in regulation of Sertoli-germ cell interactions during specific stages of spermatogenesis