Phosphatidylserine synthase 2 (PSS-2) (PtdSer synthase 2) (EC 2.7.8.29) (Serine-exchange enzyme II)
1_MRRGE 6_ RRDAG 11_ GPRPE 16_ SPVPA 21_ GRASL 26_ EEPPD 31_ GPSAG 36_ QATGP 41_ GEGRR 46_ STESE 51_ VYDDG 56_ TNTFF 61_ WRAHT 66_ LTVLF 71_ ILTCT 76_ LGYVT 81_ LLEET 86_ PQDTA 91_ YNTKR 96_ GIVAS 101_ ILVFL 106_ CFGVT 111_ QAKDG 116_ PFSRP 121_ HPAYW 126_ RFWLC 131_ VSVVY 136_ ELFLI 141_ FILFQ 146_ TVQDG 151_ RQFLK 156_ YVDPK 161_ LGVPL 166_ PERDY 171_ GGNCL 176_ IYDPD 181_ NETDP 186_ FHNIW 191_ DKLDG 196_ FVPAH 201_ FLGWY 206_ LKTLM 211_ IRDWW 216_ MCMII 221_ SVMFE 226_ FLEYS 231_ LEHQL 236_ PNFSE 241_ CWWDH 246_ WIMDV 251_ LVCNG 256_ LGIYC 261_ GMKTL 266_ EWLSL 271_ KTYKW 276_ QGLWN 281_ IPTYK 286_ GKMKR 291_ IAFQF 296_ TPYSW 301_ VRFEW 306_ KPASS 311_ LRRWL 316_ AVCGI 321_ ILVFL 326_ LAELN 331_ TFYLK 336_ FVLWM 341_ PPEHY 346_ LVLLR 351_ LVFFV 356_ NVGGV 361_ AMREI 366_ YDFMD 371_ DPKPH 376_ KKLGP 381_ QAWLV 386_ AAITA 391_ TELLI 396_ VVKYD 401_ PHTLT 406_ LSLPF 411_ YISQC 416_ WTLGS 421_ VLALT 426_ WTVWR 431_ FFLRD 436_ ITLRY 441_ KETRW 446_ QKWQN 451_ KDDQG 456_ STVGN 461_ GDQHP 466_ LGLDE 471_ DLLGP 476_ GVAEG 481_EGAPT
1: Catalyzes a base-exchange reaction in which the polar head group of phosphatidylethanolamine (PE) or phosphatidylcholine (PC) is replaced by L-serine (PubMed:19014349). Catalyzes the conversion of phosphatatidylethanolamine and does not act on phosphatidylcholine (PubMed:19014349). Can utilize both phosphatidylethanolamine (PE) plasmalogen and diacyl PE as substrate and the latter is six times better utilized, indicating the importance of an ester linkage at the sn-1 position (By similarity). Although it shows no sn-1 fatty acyl preference, exhibits significant preference towards docosahexaenoic acid (22:6n-3) compared with 18:1 or 20:4 at the sn-2 position (By similarity)