Magnesium transporter protein 1 (MagT1) (Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit MAGT1) (Oligosaccharyl transferase subunit MAGT1) (Implantation-associated protein) (IAP)
1_MAARW 6_ RFWCV 11_ SVTMV 16_ VALLI 21_ VCDVP 26_ SASAQ 31_ RKKEM 36_ VLSEK 41_ VSQLM 46_ EWTNK 51_ RPVIR 56_ MNGDK 61_ FRRLV 66_ KAPPR 71_ NYSVI 76_ VMFTA 81_ LQLHR 86_ QCVVC 91_ KQADE 96_ EFQIL 101_ ANSWR 106_ YSSAF 111_ TNRIF 116_ FAMVD 121_ FDEGS 126_ DVFQM 131_ LNMNS 136_ APTFI 141_ NFPAK 146_ GKPKR 151_ GDTYE 156_ LQVRG 161_ FSAEQ 166_ IARWI 171_ ADRTD 176_ VNIRV 181_ IRPPN 186_ YAGPL 191_ MLGLL 196_ LAVIG 201_ GLVYL 206_ RRSNM 211_ EFLFN 216_ KTGWA 221_ FAALC 226_ FVLAM 231_ TSGQM 236_ WNHIR 241_ GPPYA 246_ HKNPH 251_ TGHVN 256_ YIHGS 261_ SQAQF 266_ VAETH 271_ IVLLF 276_ NGGVT 281_ LGMVL 286_ LCEAA 291_ TSDMD 296_ IGKRK 301_ IMCVA 306_ GIGLV 311_ VLFFS 316_ WMLSI 321_ FRSKY 326_HGYPY
1: Accessory component of the STT3B-containing form of the N-oligosaccharyl transferase (OST) complex which catalyzes the transfer of a high mannose oligosaccharide from a lipid-linked oligosaccharide donor to an asparagine residue within an Asn-X-Ser/Thr consensus motif in nascent polypeptide chains (PubMed:31831667). Involved in N-glycosylation of STT3B-dependent substrates (PubMed:31831667). Specifically required for the glycosylation of a subset of acceptor sites that are near cysteine residues; in this function seems to act redundantly with TUSC3. In its oxidized form proposed to form transient mixed disulfides with a glycoprotein substrate to facilitate access of STT3B to the unmodified acceptor site. Also has oxidoreductase-independent functions in the STT3B-containing OST complex possibly involving substrate recognition. Could indirectly play a role in Mg(2+) transport in epithelial cells (Probable)