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PSD_PROA2
ID   PSD_PROA2               Reviewed;         217 AA.
AC   B4S5J9;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   23-SEP-2008, sequence version 1.
DT   25-MAY-2022, entry version 68.
DE   RecName: Full=Phosphatidylserine decarboxylase proenzyme {ECO:0000255|HAMAP-Rule:MF_00664};
DE            EC=4.1.1.65 {ECO:0000255|HAMAP-Rule:MF_00664};
DE   Contains:
DE     RecName: Full=Phosphatidylserine decarboxylase alpha chain {ECO:0000255|HAMAP-Rule:MF_00664};
DE   Contains:
DE     RecName: Full=Phosphatidylserine decarboxylase beta chain {ECO:0000255|HAMAP-Rule:MF_00664};
GN   Name=psd {ECO:0000255|HAMAP-Rule:MF_00664}; OrderedLocusNames=Paes_0540;
OS   Prosthecochloris aestuarii (strain DSM 271 / SK 413).
OC   Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae;
OC   Prosthecochloris.
OX   NCBI_TaxID=290512;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 271 / SK 413;
RG   US DOE Joint Genome Institute;
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Anderson I., Liu Z., Li T., Zhao F., Overmann J.,
RA   Bryant D.A., Richardson P.;
RT   "Complete sequence of chromosome of Prosthecochloris aestuarii DSM 271.";
RL   Submitted (JUN-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the formation of phosphatidylethanolamine (PtdEtn)
CC       from phosphatidylserine (PtdSer). {ECO:0000255|HAMAP-Rule:MF_00664}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a 1,2-diacyl-sn-glycero-3-phospho-L-serine + H(+) = a 1,2-
CC         diacyl-sn-glycero-3-phosphoethanolamine + CO2; Xref=Rhea:RHEA:20828,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:16526, ChEBI:CHEBI:57262,
CC         ChEBI:CHEBI:64612; EC=4.1.1.65; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00664};
CC   -!- COFACTOR:
CC       Name=pyruvate; Xref=ChEBI:CHEBI:15361;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00664};
CC       Note=Binds 1 pyruvoyl group covalently per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_00664};
CC   -!- PATHWAY: Phospholipid metabolism; phosphatidylethanolamine
CC       biosynthesis; phosphatidylethanolamine from CDP-diacylglycerol: step
CC       2/2. {ECO:0000255|HAMAP-Rule:MF_00664}.
CC   -!- SUBUNIT: Heterodimer of a large membrane-associated beta subunit and a
CC       small pyruvoyl-containing alpha subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_00664}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_00664};
CC       Peripheral membrane protein {ECO:0000255|HAMAP-Rule:MF_00664}.
CC   -!- PTM: Is synthesized initially as an inactive proenzyme. Formation of
CC       the active enzyme involves a self-maturation process in which the
CC       active site pyruvoyl group is generated from an internal serine residue
CC       via an autocatalytic post-translational modification. Two non-identical
CC       subunits are generated from the proenzyme in this reaction, and the
CC       pyruvate is formed at the N-terminus of the alpha chain, which is
CC       derived from the carboxyl end of the proenzyme. The post-translation
CC       cleavage follows an unusual pathway, termed non-hydrolytic serinolysis,
CC       in which the side chain hydroxyl group of the serine supplies its
CC       oxygen atom to form the C-terminus of the beta chain, while the
CC       remainder of the serine residue undergoes an oxidative deamination to
CC       produce ammonia and the pyruvoyl prosthetic group on the alpha chain.
CC       {ECO:0000255|HAMAP-Rule:MF_00664}.
CC   -!- SIMILARITY: Belongs to the phosphatidylserine decarboxylase family.
CC       PSD-A subfamily. {ECO:0000255|HAMAP-Rule:MF_00664}.
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DR   EMBL; CP001108; ACF45596.1; -; Genomic_DNA.
DR   RefSeq; WP_012505133.1; NC_011059.1.
DR   AlphaFoldDB; B4S5J9; -.
DR   SMR; B4S5J9; -.
DR   STRING; 290512.Paes_0540; -.
DR   EnsemblBacteria; ACF45596; ACF45596; Paes_0540.
DR   KEGG; paa:Paes_0540; -.
DR   eggNOG; COG0688; Bacteria.
DR   HOGENOM; CLU_072492_2_0_10; -.
DR   OMA; VSIFMSP; -.
DR   OrthoDB; 891720at2; -.
DR   UniPathway; UPA00558; UER00616.
DR   Proteomes; UP000002725; Chromosome.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0004609; F:phosphatidylserine decarboxylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006646; P:phosphatidylethanolamine biosynthetic process; IEA:UniProtKB-UniPathway.
DR   HAMAP; MF_00664; PS_decarb_PSD_A; 1.
DR   InterPro; IPR003817; PS_Dcarbxylase.
DR   InterPro; IPR033175; PSD-A.
DR   PANTHER; PTHR35809; PTHR35809; 1.
DR   Pfam; PF02666; PS_Dcarbxylase; 1.
DR   TIGRFAMs; TIGR00164; PS_decarb_rel; 1.
PE   3: Inferred from homology;
KW   Cell membrane; Decarboxylase; Lipid biosynthesis; Lipid metabolism; Lyase;
KW   Membrane; Phospholipid biosynthesis; Phospholipid metabolism; Pyruvate;
KW   Reference proteome; Zymogen.
FT   CHAIN           1..181
FT                   /note="Phosphatidylserine decarboxylase beta chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00664"
FT                   /id="PRO_1000131482"
FT   CHAIN           182..217
FT                   /note="Phosphatidylserine decarboxylase alpha chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00664"
FT                   /id="PRO_1000131483"
FT   ACT_SITE        182
FT                   /note="Schiff-base intermediate with substrate; via pyruvic
FT                   acid"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00664"
FT   SITE            181..182
FT                   /note="Cleavage (non-hydrolytic); by autocatalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00664"
FT   MOD_RES         182
FT                   /note="Pyruvic acid (Ser); by autocatalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00664"
SQ   SEQUENCE   217 AA;  24175 MW;  8D1323CDC22883B8 CRC64;
     MFARYGRTTL TKTLLLCLAA FFCALLLPTL VQIPVMTLSL LMVLFSLYFF RDPSRTPVGN
     ASAIVAPADG KVLLIRKTDH PFTGKNSTLV SIFMSPFNVH VNRIPINGRV THLEYHPGKF
     LMAFDHNSMS DNERMDIGIE NTQSKVFFSQ VSGFLARRIV CHLTNDQNVR AGEKFGMIKF
     GSRLDIILPS QAEIALEEGK KTRAGETVVA RLPNITT
 
 
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