ID A0A160JG63_9PROT Unreviewed; 246 AA.
AC A0A160JG63;
DT 06-JUL-2016, integrated into UniProtKB/TrEMBL.
DT 20-JUN-2018, sequence version 2.
DT 24-JAN-2024, entry version 36.
DE RecName: Full=Phosphatidylserine decarboxylase proenzyme {ECO:0000256|HAMAP-Rule:MF_00664};
DE EC=4.1.1.65 {ECO:0000256|HAMAP-Rule:MF_00664};
DE Contains:
DE RecName: Full=Phosphatidylserine decarboxylase alpha chain {ECO:0000256|HAMAP-Rule:MF_00664};
DE Contains:
DE RecName: Full=Phosphatidylserine decarboxylase beta chain {ECO:0000256|HAMAP-Rule:MF_00664};
GN Name=psd {ECO:0000256|HAMAP-Rule:MF_00664};
GN ORFNames=A6A40_08405 {ECO:0000313|EMBL:ANC91929.2};
OS Azospirillum humicireducens.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodospirillales;
OC Azospirillaceae; Azospirillum.
OX NCBI_TaxID=1226968 {ECO:0000313|EMBL:ANC91929.2, ECO:0000313|Proteomes:UP000077405};
RN [1] {ECO:0000313|EMBL:ANC91929.2, ECO:0000313|Proteomes:UP000077405}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SgZ-5 {ECO:0000313|EMBL:ANC91929.2,
RC ECO:0000313|Proteomes:UP000077405};
RX PubMed=23264502; DOI=10.1099/ijs.0.046813-0;
RA Zhou S., Han L., Wang Y., Yang G., Zhuang L., Hu P.;
RT "Azospirillum humicireducens sp. nov., a nitrogen-fixing bacterium isolated
RT from a microbial fuel cell.";
RL Int. J. Syst. Evol. Microbiol. 63:2618-2624(2013).
CC -!- FUNCTION: Catalyzes the formation of phosphatidylethanolamine (PtdEtn)
CC from phosphatidylserine (PtdSer). {ECO:0000256|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:0000256|HAMAP-
CC Rule:MF_00664};
CC -!- COFACTOR:
CC Name=pyruvate; Xref=ChEBI:CHEBI:15361;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00664};
CC Note=Binds 1 pyruvoyl group covalently per subunit. {ECO:0000256|HAMAP-
CC Rule:MF_00664};
CC -!- PATHWAY: Phospholipid metabolism; phosphatidylethanolamine
CC biosynthesis; phosphatidylethanolamine from CDP-diacylglycerol: step
CC 2/2. {ECO:0000256|HAMAP-Rule:MF_00664}.
CC -!- SUBUNIT: Heterodimer of a large membrane-associated beta subunit and a
CC small pyruvoyl-containing alpha subunit. {ECO:0000256|HAMAP-
CC Rule:MF_00664}.
CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000256|HAMAP-Rule:MF_00664};
CC Peripheral membrane protein {ECO:0000256|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:0000256|HAMAP-Rule:MF_00664}.
CC -!- SIMILARITY: Belongs to the phosphatidylserine decarboxylase family.
CC PSD-A subfamily. {ECO:0000256|HAMAP-Rule:MF_00664}.
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DR EMBL; CP015285; ANC91929.2; -; Genomic_DNA.
DR AlphaFoldDB; A0A160JG63; -.
DR STRING; 1226968.A6A40_08405; -.
DR KEGG; ahu:A6A40_08405; -.
DR OrthoDB; 9790893at2; -.
DR UniPathway; UPA00558; UER00616.
DR Proteomes; UP000077405; 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; ARCHAETIDYLSERINE DECARBOXYLASE PROENZYME-RELATED; 1.
DR PANTHER; PTHR35809:SF1; ARCHAETIDYLSERINE DECARBOXYLASE PROENZYME-RELATED; 1.
DR Pfam; PF02666; PS_Dcarbxylase; 1.
PE 3: Inferred from homology;
KW Cell membrane {ECO:0000256|HAMAP-Rule:MF_00664};
KW Decarboxylase {ECO:0000256|ARBA:ARBA00022793, ECO:0000256|HAMAP-
KW Rule:MF_00664}; Lipid biosynthesis {ECO:0000256|HAMAP-Rule:MF_00664};
KW Lipid metabolism {ECO:0000256|HAMAP-Rule:MF_00664};
KW Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|HAMAP-Rule:MF_00664};
KW Membrane {ECO:0000256|HAMAP-Rule:MF_00664, ECO:0000256|SAM:Phobius};
KW Phospholipid biosynthesis {ECO:0000256|HAMAP-Rule:MF_00664};
KW Phospholipid metabolism {ECO:0000256|HAMAP-Rule:MF_00664};
KW Pyruvate {ECO:0000256|ARBA:ARBA00023317, ECO:0000256|HAMAP-Rule:MF_00664};
KW Transmembrane {ECO:0000256|SAM:Phobius};
KW Transmembrane helix {ECO:0000256|SAM:Phobius};
KW Zymogen {ECO:0000256|ARBA:ARBA00023145, ECO:0000256|HAMAP-Rule:MF_00664}.
FT CHAIN 1..202
FT /note="Phosphatidylserine decarboxylase beta chain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00664"
FT /id="PRO_5023557022"
FT CHAIN 203..246
FT /note="Phosphatidylserine decarboxylase alpha chain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00664"
FT /id="PRO_5023557023"
FT TRANSMEM 21..39
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 45..66
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT ACT_SITE 203
FT /note="Schiff-base intermediate with substrate; via pyruvic
FT acid"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00664"
FT SITE 202..203
FT /note="Cleavage (non-hydrolytic); by autocatalysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00664"
FT MOD_RES 203
FT /note="Pyruvic acid (Ser); by autocatalysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00664"
SQ SEQUENCE 246 AA; 26949 MW; FD5A986DE17185E7 CRC64;
MAVRCGLKIR RKQAMSAIDT VVVPIHRAGW PFIAGFAVVS LVLGLAVWAP LGWIGLVLTL
WCAYFFRDPD RVTPTRPGLL VSPADGRVTM IVRAVPPKEL GMGDKPLTRI SVFLNVFNVH
VNRVPADGTI VAAEYHKGTF VNAALDKASD ENERMAFRHR LPDGREIAYV QIAGLVARRI
LWWVKAGQEV KAGERFGLIR FGSRTDIYLP DGVAPLVCVG QTAIGGETIL ADLDGTEAQR
QGDVRR
//
