ID E3NCU8_CAERE Unreviewed; 347 AA.
AC E3NCU8;
DT 11-JAN-2011, integrated into UniProtKB/TrEMBL.
DT 11-JAN-2011, sequence version 1.
DT 24-JAN-2024, entry version 64.
DE RecName: Full=Phosphatidylserine decarboxylase proenzyme, mitochondrial {ECO:0000256|HAMAP-Rule:MF_03208};
DE EC=4.1.1.65 {ECO:0000256|HAMAP-Rule:MF_03208};
DE Contains:
DE RecName: Full=Phosphatidylserine decarboxylase beta chain {ECO:0000256|HAMAP-Rule:MF_03208};
DE Contains:
DE RecName: Full=Phosphatidylserine decarboxylase alpha chain {ECO:0000256|HAMAP-Rule:MF_03208};
GN Name=Cre-psd-1 {ECO:0000313|EMBL:EFO93327.1};
GN Synonyms=psd-1 {ECO:0000256|HAMAP-Rule:MF_03208};
GN ORFNames=CRE_24779 {ECO:0000313|EMBL:EFO93327.1}, GCK72_008638
GN {ECO:0000313|EMBL:KAF1760389.1};
OS Caenorhabditis remanei (Caenorhabditis vulgaris).
OC Eukaryota; Metazoa; Ecdysozoa; Nematoda; Chromadorea; Rhabditida;
OC Rhabditina; Rhabditomorpha; Rhabditoidea; Rhabditidae; Peloderinae;
OC Caenorhabditis.
OX NCBI_TaxID=31234 {ECO:0000313|Proteomes:UP000008281};
RN [1] {ECO:0000313|Proteomes:UP000008281}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PB4641 {ECO:0000313|Proteomes:UP000008281};
RG Caenorhabditis remanei Sequencing Consortium;
RA Wilson R.K.;
RT "PCAP assembly of the Caenorhabditis remanei genome.";
RL Submitted (JUL-2007) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:EFO93327.1}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PB4641 {ECO:0000313|EMBL:EFO93327.1};
RG The Caenorhabditis remanei Sequencing Consortium;
RA Wilson R.K.;
RT "PCAP assembly of the Caenorhabditis remanei genome.";
RL Submitted (JUL-2007) to the EMBL/GenBank/DDBJ databases.
RN [3] {ECO:0000313|EMBL:KAF1760389.1, ECO:0000313|Proteomes:UP000483820}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PX506 {ECO:0000313|EMBL:KAF1760389.1,
RC ECO:0000313|Proteomes:UP000483820};
RC TISSUE=Whole organism {ECO:0000313|EMBL:KAF1760389.1};
RA Teterina A.A., Willis J.H., Phillips P.C.;
RT "Chromosome-level assembly of the Caenorhabditis remanei genome.";
RL Submitted (DEC-2019) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the formation of phosphatidylethanolamine (PtdEtn)
CC from phosphatidylserine (PtdSer). Plays a central role in phospholipid
CC metabolism and in the interorganelle trafficking of phosphatidylserine.
CC {ECO:0000256|HAMAP-Rule:MF_03208}.
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_03208};
CC -!- COFACTOR:
CC Name=pyruvate; Xref=ChEBI:CHEBI:15361;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_03208};
CC Note=Binds 1 pyruvoyl group covalently per subunit. {ECO:0000256|HAMAP-
CC Rule:MF_03208};
CC -!- PATHWAY: Lipid metabolism. {ECO:0000256|ARBA:ARBA00005189}.
CC -!- PATHWAY: Phospholipid metabolism; phosphatidylethanolamine
CC biosynthesis; phosphatidylethanolamine from CDP-diacylglycerol: step
CC 2/2. {ECO:0000256|HAMAP-Rule:MF_03208}.
CC -!- SUBUNIT: Heterodimer of a large membrane-associated beta subunit and a
CC small pyruvoyl-containing alpha subunit. {ECO:0000256|HAMAP-
CC Rule:MF_03208}.
CC -!- SUBCELLULAR LOCATION: [Phosphatidylserine decarboxylase alpha chain]:
CC Mitochondrion inner membrane {ECO:0000256|HAMAP-Rule:MF_03208};
CC Peripheral membrane protein {ECO:0000256|HAMAP-Rule:MF_03208};
CC Intermembrane side {ECO:0000256|HAMAP-Rule:MF_03208}. Note=Anchored to
CC the mitochondrial inner membrane through its interaction with the
CC integral membrane beta chain. {ECO:0000256|HAMAP-Rule:MF_03208}.
CC -!- SUBCELLULAR LOCATION: [Phosphatidylserine decarboxylase beta chain]:
CC Mitochondrion inner membrane {ECO:0000256|HAMAP-Rule:MF_03208}; Single-
CC pass membrane protein {ECO:0000256|HAMAP-Rule:MF_03208}; Intermembrane
CC side {ECO:0000256|HAMAP-Rule:MF_03208}.
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:0000256|HAMAP-Rule:MF_03208}.
CC -!- SIMILARITY: Belongs to the phosphatidylserine decarboxylase family.
CC PSD-B subfamily. Eukaryotic type I sub-subfamily. {ECO:0000256|HAMAP-
CC Rule:MF_03208}.
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DR EMBL; DS268602; EFO93327.1; -; Genomic_DNA.
DR EMBL; WUAV01000003; KAF1760389.1; -; Genomic_DNA.
DR RefSeq; XP_003093769.1; XM_003093721.1.
DR AlphaFoldDB; E3NCU8; -.
DR STRING; 31234.E3NCU8; -.
DR EnsemblMetazoa; CRE24779.1; CRE24779.1; WBGene00066449.
DR eggNOG; KOG2420; Eukaryota.
DR HOGENOM; CLU_029061_3_0_1; -.
DR InParanoid; E3NCU8; -.
DR OMA; RWVANQC; -.
DR OrthoDB; 1216391at2759; -.
DR UniPathway; UPA00558; UER00616.
DR Proteomes; UP000008281; Unassembled WGS sequence.
DR Proteomes; UP000483820; Chromosome iii.
DR GO; GO:0005743; C:mitochondrial inner 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 GO; GO:0016540; P:protein autoprocessing; IEA:UniProtKB-UniRule.
DR HAMAP; MF_03208; PS_decarb_PSD_B_type1_euk; 1.
DR InterPro; IPR003817; PS_Dcarbxylase.
DR InterPro; IPR033177; PSD-B.
DR InterPro; IPR033661; PSD_type1_euk.
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 Decarboxylase {ECO:0000256|ARBA:ARBA00022793, ECO:0000256|HAMAP-
KW Rule:MF_03208}; Lipid biosynthesis {ECO:0000256|HAMAP-Rule:MF_03208};
KW Lipid metabolism {ECO:0000256|HAMAP-Rule:MF_03208};
KW Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|HAMAP-Rule:MF_03208};
KW Membrane {ECO:0000256|HAMAP-Rule:MF_03208, ECO:0000256|SAM:Phobius};
KW Mitochondrion {ECO:0000256|HAMAP-Rule:MF_03208};
KW Mitochondrion inner membrane {ECO:0000256|HAMAP-Rule:MF_03208};
KW Phospholipid biosynthesis {ECO:0000256|HAMAP-Rule:MF_03208};
KW Phospholipid metabolism {ECO:0000256|HAMAP-Rule:MF_03208};
KW Pyruvate {ECO:0000256|HAMAP-Rule:MF_03208};
KW Reference proteome {ECO:0000313|Proteomes:UP000008281};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, ECO:0000256|HAMAP-
KW Rule:MF_03208};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, ECO:0000256|HAMAP-
KW Rule:MF_03208}; Zymogen {ECO:0000256|HAMAP-Rule:MF_03208}.
FT CHAIN 1..313
FT /note="Phosphatidylserine decarboxylase beta chain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT /id="PRO_5035345053"
FT CHAIN 314..347
FT /note="Phosphatidylserine decarboxylase alpha chain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT /id="PRO_5035345052"
FT TOPO_DOM 1..31
FT /note="Mitochondrial matrix"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT TRANSMEM 20..51
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TOPO_DOM 51..347
FT /note="Mitochondrial intermembrane"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT ACT_SITE 151
FT /note="Charge relay system; for autoendoproteolytic
FT cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT ACT_SITE 208
FT /note="Charge relay system; for autoendoproteolytic
FT cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT ACT_SITE 314
FT /note="Charge relay system; for autoendoproteolytic
FT cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT ACT_SITE 314
FT /note="Schiff-base intermediate with substrate; via pyruvic
FT acid; for decarboxylase activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT SITE 313..314
FT /note="Cleavage (non-hydrolytic); by autocatalysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT MOD_RES 314
FT /note="Pyruvic acid (Ser); by autocatalysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
SQ SEQUENCE 347 AA; 39126 MW; 7AA4CFDC1339AA02 CRC64;
MDTYSGGFLH PDSVMAINPF LIIVAVWSWV KWLSVSTLII GGASYIGYLF TPDWREIVDS
KHYYSNWKIR VYLSLPFNTA SRVIGGLANQ EIPIWLREHL LGGFARIYDC RMEECVDPDF
KNYRSFAAFF NRKLRESTRP ISASPLVSPA DGTVLHFGKV EENKIEYVKG HDYDVDKFLG
DVELPAKDEL DLYQVVIYLA PGDYHAFHSP ARWVANQCRH VPGLLLSVRP TLLSHVPHLF
CLNERVVLNG SWRHGFFSMS AVAATNVGDI VVDAEPSLRT NIVRRKTQKI MNTETEIHAP
FLPGERVGEF RLGSTIVLVF QAPPTIKFAI KAGDPLRYGQ SLVADGV
//
