PSD_CLOK1
ID PSD_CLOK1 Reviewed; 296 AA.
AC B9DXW5;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 24-MAR-2009, sequence version 1.
DT 25-MAY-2022, entry version 56.
DE RecName: Full=Phosphatidylserine decarboxylase proenzyme {ECO:0000255|HAMAP-Rule:MF_00663};
DE EC=4.1.1.65 {ECO:0000255|HAMAP-Rule:MF_00663};
DE Contains:
DE RecName: Full=Phosphatidylserine decarboxylase alpha chain {ECO:0000255|HAMAP-Rule:MF_00663};
DE Contains:
DE RecName: Full=Phosphatidylserine decarboxylase beta chain {ECO:0000255|HAMAP-Rule:MF_00663};
GN Name=psd {ECO:0000255|HAMAP-Rule:MF_00663}; OrderedLocusNames=CKR_0039;
OS Clostridium kluyveri (strain NBRC 12016).
OC Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC Clostridium.
OX NCBI_TaxID=583346;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NBRC 12016;
RA Inui M., Nonaka H., Shinoda Y., Ikenaga Y., Abe M., Naito K., Vertes A.A.,
RA Yukawa H.;
RT "Complete genome sequence of Clostridium kluyveri and comparative genomics
RT of Clostridia species.";
RL Submitted (SEP-2005) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the formation of phosphatidylethanolamine (PtdEtn)
CC from phosphatidylserine (PtdSer). {ECO:0000255|HAMAP-Rule:MF_00663}.
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_00663};
CC -!- COFACTOR:
CC Name=pyruvate; Xref=ChEBI:CHEBI:15361;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00663};
CC Note=Binds 1 pyruvoyl group covalently per subunit. {ECO:0000255|HAMAP-
CC Rule:MF_00663};
CC -!- PATHWAY: Phospholipid metabolism; phosphatidylethanolamine
CC biosynthesis; phosphatidylethanolamine from CDP-diacylglycerol: step
CC 2/2. {ECO:0000255|HAMAP-Rule:MF_00663}.
CC -!- SUBUNIT: Heterodimer of a large membrane-associated beta subunit and a
CC small pyruvoyl-containing alpha subunit. {ECO:0000255|HAMAP-
CC Rule:MF_00663}.
CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_00663};
CC Peripheral membrane protein {ECO:0000255|HAMAP-Rule:MF_00663}.
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 autoendoproteolytic
CC cleavage occurs by a canonical serine protease mechanism, in which the
CC side chain hydroxyl group of the serine supplies its oxygen atom to
CC form the C-terminus of the beta chain, while the remainder of the
CC serine residue undergoes an oxidative deamination to produce ammonia
CC and the pyruvoyl prosthetic group on the alpha chain. During this
CC reaction, the Ser that is part of the protease active site of the
CC proenzyme becomes the pyruvoyl prosthetic group, which constitutes an
CC essential element of the active site of the mature decarboxylase.
CC {ECO:0000255|HAMAP-Rule:MF_00663}.
CC -!- SIMILARITY: Belongs to the phosphatidylserine decarboxylase family.
CC PSD-B subfamily. Prokaryotic type II sub-subfamily. {ECO:0000255|HAMAP-
CC Rule:MF_00663}.
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DR EMBL; AP009049; BAH05090.1; -; Genomic_DNA.
DR RefSeq; WP_011988654.1; NC_011837.1.
DR AlphaFoldDB; B9DXW5; -.
DR SMR; B9DXW5; -.
DR EnsemblBacteria; BAH05090; BAH05090; CKR_0039.
DR KEGG; ckr:CKR_0039; -.
DR HOGENOM; CLU_029061_2_2_9; -.
DR UniPathway; UPA00558; UER00616.
DR Proteomes; UP000007969; 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_00663; PS_decarb_PSD_B_type2; 1.
DR InterPro; IPR003817; PS_Dcarbxylase.
DR InterPro; IPR033177; PSD.
DR InterPro; IPR033179; PSD_type2_pro.
DR PANTHER; PTHR10067; PTHR10067; 1.
DR Pfam; PF02666; PS_Dcarbxylase; 1.
DR TIGRFAMs; TIGR00163; PS_decarb; 1.
PE 3: Inferred from homology;
KW Cell membrane; Decarboxylase; Lipid biosynthesis; Lipid metabolism; Lyase;
KW Membrane; Phospholipid biosynthesis; Phospholipid metabolism; Pyruvate;
KW Zymogen.
FT CHAIN 1..255
FT /note="Phosphatidylserine decarboxylase beta chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00663"
FT /id="PRO_1000147617"
FT CHAIN 256..296
FT /note="Phosphatidylserine decarboxylase alpha chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00663"
FT /id="PRO_1000147618"
FT ACT_SITE 113
FT /note="Charge relay system; for autoendoproteolytic
FT cleavage activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00663"
FT ACT_SITE 169
FT /note="Charge relay system; for autoendoproteolytic
FT cleavage activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00663"
FT ACT_SITE 256
FT /note="Charge relay system; for autoendoproteolytic
FT cleavage activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00663"
FT ACT_SITE 256
FT /note="Schiff-base intermediate with substrate; via pyruvic
FT acid; for decarboxylase activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00663"
FT SITE 255..256
FT /note="Cleavage (non-hydrolytic); by autocatalysis"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00663"
FT MOD_RES 256
FT /note="Pyruvic acid (Ser); by autocatalysis"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00663"
SQ SEQUENCE 296 AA; 34940 MW; 9E6766D751CF8210 CRC64;
MIKYFNRKTK QYEIEQVAGE KYLKWTYCSP IGMKLLELII KKKIFSKLYG YFCNSRYSKK
NIYPFIKNFN INMDDYIEQT DNFKCFNDFF SRALKNNSRS IDRDEKVLIS PGDGRLQVYE
NIDLNKIVQI KGFTYSLYNL INDIEIAKRF YKGTCLILRL CPTDYHRFHF IDYGICDFTH
KIKGNYYSVN PIALRNISNI FCRNKREWSI FHSKNFGDIL YVEVGATCVG SIVQTYFPGK
HVSKGDEKGY FKFGGSTIIL FFEQNKIRIH KDLLEQSNMG YETKVLMGES IGIKYQ
