ID   PSD_BACAN               Reviewed;         262 AA.
AC   Q81LP7; Q6HT55; Q6KME3;
DT   03-JUL-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   02-SEP-2026, entry version 131.
DE   RecName: Full=Phosphatidylserine decarboxylase proenzyme {ECO:0000255|HAMAP-Rule:MF_00662};
DE            EC=4.1.1.65 {ECO:0000255|HAMAP-Rule:MF_00662};
DE   Contains:
DE     RecName: Full=Phosphatidylserine decarboxylase alpha chain {ECO:0000255|HAMAP-Rule:MF_00662};
DE   Contains:
DE     RecName: Full=Phosphatidylserine decarboxylase beta chain {ECO:0000255|HAMAP-Rule:MF_00662};
GN   Name=psd {ECO:0000255|HAMAP-Rule:MF_00662};
GN   OrderedLocusNames=BA_4565, GBAA_4565, BAS4235;
OS   Bacillus anthracis.
OC   Bacteria; Bacillati; Bacillota; Bacilli; Caryophanales; Bacillaceae;
OC   Bacillus; Bacillus cereus group.
OX   NCBI_TaxID=1392;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Ames / isolate Porton;
RX   PubMed=12721629; DOI=10.1038/nature01586;
RA   Read T.D., Peterson S.N., Tourasse N.J., Baillie L.W., Paulsen I.T.,
RA   Nelson K.E., Tettelin H., Fouts D.E., Eisen J.A., Gill S.R.,
RA   Holtzapple E.K., Okstad O.A., Helgason E., Rilstone J., Wu M.,
RA   Kolonay J.F., Beanan M.J., Dodson R.J., Brinkac L.M., Gwinn M.L.,
RA   DeBoy R.T., Madpu R., Daugherty S.C., Durkin A.S., Haft D.H., Nelson W.C.,
RA   Peterson J.D., Pop M., Khouri H.M., Radune D., Benton J.L., Mahamoud Y.,
RA   Jiang L., Hance I.R., Weidman J.F., Berry K.J., Plaut R.D., Wolf A.M.,
RA   Watkins K.L., Nierman W.C., Hazen A., Cline R.T., Redmond C., Thwaite J.E.,
RA   White O., Salzberg S.L., Thomason B., Friedlander A.M., Koehler T.M.,
RA   Hanna P.C., Kolstoe A.-B., Fraser C.M.;
RT   "The genome sequence of Bacillus anthracis Ames and comparison to closely
RT   related bacteria.";
RL   Nature 423:81-86(2003).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Ames ancestor;
RX   PubMed=18952800; DOI=10.1128/jb.01347-08;
RA   Ravel J., Jiang L., Stanley S.T., Wilson M.R., Decker R.S., Read T.D.,
RA   Worsham P., Keim P.S., Salzberg S.L., Fraser-Liggett C.M., Rasko D.A.;
RT   "The complete genome sequence of Bacillus anthracis Ames 'Ancestor'.";
RL   J. Bacteriol. 191:445-446(2009).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Sterne;
RA   Brettin T.S., Bruce D., Challacombe J.F., Gilna P., Han C., Hill K.,
RA   Hitchcock P., Jackson P., Keim P., Longmire J., Lucas S., Okinaka R.,
RA   Richardson P., Rubin E., Tice H.;
RT   "Complete genome sequence of Bacillus anthracis Sterne.";
RL   Submitted (JAN-2004) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the formation of phosphatidylethanolamine (PtdEtn)
CC       from phosphatidylserine (PtdSer). {ECO:0000255|HAMAP-Rule:MF_00662}.
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_00662};
CC   -!- COFACTOR:
CC       Name=pyruvate; Xref=ChEBI:CHEBI:15361; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00662};
CC       Note=Binds 1 pyruvoyl group covalently per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_00662};
CC   -!- PATHWAY: Phospholipid metabolism; phosphatidylethanolamine
CC       biosynthesis; phosphatidylethanolamine from CDP-diacylglycerol: step
CC       2/2. {ECO:0000255|HAMAP-Rule:MF_00662}.
CC   -!- SUBUNIT: Heterodimer of a large membrane-associated beta subunit and a
CC       small pyruvoyl-containing alpha subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_00662}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_00662};
CC       Peripheral membrane protein {ECO:0000255|HAMAP-Rule:MF_00662}.
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_00662}.
CC   -!- SIMILARITY: Belongs to the phosphatidylserine decarboxylase family.
CC       PSD-B subfamily. Prokaryotic type I sub-subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_00662}.
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DR   EMBL; AE016879; AAP28273.1; -; Genomic_DNA.
DR   EMBL; AE017334; AAT33685.2; -; Genomic_DNA.
DR   EMBL; AE017225; AAT56534.1; -; Genomic_DNA.
DR   RefSeq; WP_001255013.1; NZ_AP014833.1.
DR   AlphaFoldDB; Q81LP7; -.
DR   SMR; Q81LP7; -.
DR   STRING; 261594.GBAA_4565; -.
DR   PaxDb; 261594-GBAA_4565; -.
DR   DNASU; 1088333; -.
DR   GeneID; 45024215; -.
DR   KEGG; ban:BA_4565; -.
DR   KEGG; bar:GBAA_4565; -.
DR   KEGG; bat:BAS4235; -.
DR   PATRIC; fig|198094.11.peg.4531; -.
DR   eggNOG; COG0688; Bacteria.
DR   HOGENOM; CLU_029061_4_0_9; -.
DR   OMA; KREWSIF; -.
DR   OrthoDB; 9802030at2; -.
DR   UniPathway; UPA00558; UER00616.
DR   Proteomes; UP000000427; Chromosome.
DR   Proteomes; UP000000594; 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-UniRule.
DR   HAMAP; MF_00662; PS_decarb_PSD_B_type1; 1.
DR   InterPro; IPR003817; PS_Dcarbxylase.
DR   InterPro; IPR033177; PSD-B.
DR   InterPro; IPR033178; PSD_type1_pro.
DR   NCBIfam; NF002853; PRK03140.1; 1.
DR   NCBIfam; TIGR00163; PS_decarb; 1.
DR   PANTHER; PTHR10067; PHOSPHATIDYLSERINE DECARBOXYLASE; 1.
DR   PANTHER; PTHR10067:SF6; PHOSPHATIDYLSERINE DECARBOXYLASE PROENZYME, MITOCHONDRIAL; 1.
DR   Pfam; PF02666; PS_Dcarbxylase; 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..225
FT                   /note="Phosphatidylserine decarboxylase beta chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00662"
FT                   /id="PRO_0000029619"
FT   CHAIN           226..262
FT                   /note="Phosphatidylserine decarboxylase alpha chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00662"
FT                   /id="PRO_0000029620"
FT   ACT_SITE        86
FT                   /note="Charge relay system; for autoendoproteolytic
FT                   cleavage activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00662"
FT   ACT_SITE        142
FT                   /note="Charge relay system; for autoendoproteolytic
FT                   cleavage activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00662"
FT   ACT_SITE        226
FT                   /note="Charge relay system; for autoendoproteolytic
FT                   cleavage activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00662"
FT   ACT_SITE        226
FT                   /note="Schiff-base intermediate with substrate; via pyruvic
FT                   acid; for decarboxylase activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00662"
FT   SITE            225..226
FT                   /note="Cleavage (non-hydrolytic); by autocatalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00662"
FT   MOD_RES         226
FT                   /note="Pyruvic acid (Ser); by autocatalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00662"
SQ   SEQUENCE   262 AA;  29906 MW;  CEB2C8CC91E07276 CRC64;
     MRRTLYRLMI ELTNGRFTSY TLRKFAQSRL SSIIIPSYAK VFQINQDEME KGLKEYRTLH
     ELFTRKLKEG KRSIDTDASS IVSPVDGVFA DHGPIEDTKT FDIKGKRYSI VDMLGNEERA
     QRYAGGTYMV IYLSPSHYHR IHSPLSGSVT ERFVLGRKSY PVNAAGMEYG KEPLSKNYRS
     VTEVNSDGEH MALVKVGAMF VNSIELLHER DTVQKGEEMA YFTFGSTVVL LFEKDMIEVV
     QELKSGQELR LGEKIATRLA HK
//