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PSD_CLOBB
ID   PSD_CLOBB               Reviewed;         296 AA.
AC   B2THF2;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-2008, sequence version 1.
DT   25-MAY-2022, entry version 74.
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=CLL_A0050;
OS   Clostridium botulinum (strain Eklund 17B / Type B).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC   Clostridium.
OX   NCBI_TaxID=935198;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Eklund 17B / Type B;
RA   Brinkac L.M., Brown J.L., Bruce D., Detter C., Munk C., Smith L.A.,
RA   Smith T.J., Sutton G., Brettin T.S.;
RT   "Complete sequence of Clostridium botulinum strain Eklund.";
RL   Submitted (APR-2008) 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; CP001056; ACD22074.1; -; Genomic_DNA.
DR   RefSeq; WP_012422955.1; NC_018648.1.
DR   AlphaFoldDB; B2THF2; -.
DR   SMR; B2THF2; -.
DR   EnsemblBacteria; ACD22074; ACD22074; CLL_A0050.
DR   KEGG; cbk:CLL_A0050; -.
DR   PATRIC; fig|935198.13.peg.41; -.
DR   HOGENOM; CLU_029061_2_2_9; -.
DR   OMA; KDYHHYH; -.
DR   OrthoDB; 891720at2; -.
DR   UniPathway; UPA00558; UER00616.
DR   Proteomes; UP000001195; 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_1000131434"
FT   CHAIN           256..296
FT                   /note="Phosphatidylserine decarboxylase alpha chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00663"
FT                   /id="PRO_1000131435"
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;  34097 MW;  1A393F016F7BE9CC CRC64;
     MIKVYNRITN EYEEENVAGK KFIKWTYETP VGKSITELIA KRKIFSKFYG KFCDTKCSAK
     KIPDFVRDFN IDMNIAEKNI SEFNSFNDFF VRNLTSTSRP IDYNEDIFIS PGDGRITVYD
     NIDLDNIVQV KGLTYSLREL IKNDEISERY KDGICIILRL CPTDYHRFHF VDSGIPCETH
     KIKGHYYSVN PIALNSIPKL FCENKREWCI FKSENFGDVL TVEVGATCVG SIIQTYEPNK
     KAKKGDEKGY FKFGGSTTIL FLEKDKVKID DDILEQSKQG YECKVLLGET IGTKVL
 
 
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