PSD_CLOB1
ID PSD_CLOB1 Reviewed; 295 AA.
AC A7FQ59;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 11-SEP-2007, sequence version 1.
DT 03-AUG-2022, entry version 71.
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=CLB_0034;
OS Clostridium botulinum (strain ATCC 19397 / Type A).
OC Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC Clostridium.
OX NCBI_TaxID=441770;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 19397 / Type A;
RX PubMed=18060065; DOI=10.1371/journal.pone.0001271;
RA Smith T.J., Hill K.K., Foley B.T., Detter J.C., Munk A.C., Bruce D.C.,
RA Doggett N.A., Smith L.A., Marks J.D., Xie G., Brettin T.S.;
RT "Analysis of the neurotoxin complex genes in Clostridium botulinum A1-A4
RT and B1 strains: BoNT/A3, /Ba4 and /B1 clusters are located within
RT plasmids.";
RL PLoS ONE 2:E1271-E1271(2007).
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; CP000726; ABS33916.1; -; Genomic_DNA.
DR RefSeq; WP_011947908.1; NC_009697.1.
DR AlphaFoldDB; A7FQ59; -.
DR SMR; A7FQ59; -.
DR GeneID; 5184280; -.
DR KEGG; cba:CLB_0034; -.
DR HOGENOM; CLU_029061_2_2_9; -.
DR OMA; KDYHHYH; -.
DR OrthoDB; 891720at2; -.
DR UniPathway; UPA00558; UER00616.
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_1000026608"
FT CHAIN 256..295
FT /note="Phosphatidylserine decarboxylase alpha chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00663"
FT /id="PRO_1000026609"
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 295 AA; 34178 MW; A70DC88ED766DCE2 CRC64;
MIKYYNRKNK DYDIEKVAGE KYLNWTYSSP IGMNLLEVFI KKKFFSKIYG FYCDRRLSHK
KINKFINDFK IDMSLSENQS SNFKCFNDFF TRKLKKEARP IKTDKNLLIS PGDGKILAYE
NLNLNSVTEV KGINYSFYEL INNDSLAKEY DNGTCLVLRL CPTDYHRFHF IDNGICENTI
KLKGFYYSVN PIALSKIPSV FCKNKREYSI FHSENFGDII FMEVGATCVG SIIQTYKPNT
KILKGDEKGY FKFGGSTVIL FFKKNTIKID NDILNQSKLG YETSVVMGES IGIKK
