ID A0A0D9R8F5_CHLSB Unreviewed; 409 AA.
AC A0A0D9R8F5;
DT 27-MAY-2015, integrated into UniProtKB/TrEMBL.
DT 27-MAY-2015, sequence version 1.
DT 27-MAR-2024, entry version 46.
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=PISD {ECO:0000256|HAMAP-Rule:MF_03208,
GN ECO:0000313|Ensembl:ENSCSAP00000004894.1};
OS Chlorocebus sabaeus (Green monkey) (Cercopithecus sabaeus).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini;
OC Cercopithecidae; Cercopithecinae; Chlorocebus.
OX NCBI_TaxID=60711 {ECO:0000313|Ensembl:ENSCSAP00000004894.1, ECO:0000313|Proteomes:UP000029965};
RN [1] {ECO:0000313|Ensembl:ENSCSAP00000004894.1, ECO:0000313|Proteomes:UP000029965}
RP NUCLEOTIDE SEQUENCE.
RA Warren W., Wilson R.K.;
RL Submitted (MAR-2014) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|Ensembl:ENSCSAP00000004894.1}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (NOV-2023) to UniProtKB.
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. {ECO:0000256|ARBA:ARBA00024326}.
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: Mitochondrion inner membrane
CC {ECO:0000256|ARBA:ARBA00004273}.
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; AQIB01136778; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR RefSeq; XP_007973662.1; XM_007975471.1.
DR AlphaFoldDB; A0A0D9R8F5; -.
DR STRING; 60711.ENSCSAP00000004894; -.
DR Ensembl; ENSCSAT00000006694.1; ENSCSAP00000004894.1; ENSCSAG00000008655.1.
DR GeneID; 103223189; -.
DR CTD; 23761; -.
DR eggNOG; KOG2420; Eukaryota.
DR GeneTree; ENSGT00390000013484; -.
DR OMA; KDYHHYH; -.
DR OrthoDB; 1216391at2759; -.
DR UniPathway; UPA00558; -.
DR BioGRID-ORCS; 103223189; 0 hits in 9 CRISPR screens.
DR Proteomes; UP000029965; Chromosome 19.
DR Bgee; ENSCSAG00000008655; Expressed in caudate nucleus and 7 other cell types or tissues.
DR GO; GO:0005829; C:cytosol; IEA:Ensembl.
DR GO; GO:0005794; C:Golgi apparatus; IEA:Ensembl.
DR GO; GO:0005811; C:lipid droplet; IEA:UniProtKB-KW.
DR GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0005634; C:nucleus; IEA:Ensembl.
DR GO; GO:0004609; F:phosphatidylserine decarboxylase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0140042; P:lipid droplet formation; IEA:Ensembl.
DR GO; GO:0035694; P:mitochondrial protein catabolic process; IEA:Ensembl.
DR GO; GO:0006646; P:phosphatidylethanolamine biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0016540; P:protein autoprocessing; IEA:UniProtKB-UniRule.
DR GO; GO:0010821; P:regulation of mitochondrion organization; IEA:Ensembl.
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 droplet {ECO:0000256|ARBA:ARBA00022677};
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};
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:UP000029965};
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..377
FT /note="Phosphatidylserine decarboxylase beta chain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT /id="PRO_5023429557"
FT CHAIN 378..409
FT /note="Phosphatidylserine decarboxylase alpha chain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT /id="PRO_5023429556"
FT TOPO_DOM 1..63
FT /note="Mitochondrial matrix"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT TOPO_DOM 83..409
FT /note="Mitochondrial intermembrane"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT ACT_SITE 191
FT /note="Charge relay system; for autoendoproteolytic
FT cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT ACT_SITE 267
FT /note="Charge relay system; for autoendoproteolytic
FT cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT ACT_SITE 378
FT /note="Charge relay system; for autoendoproteolytic
FT cleavage activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT ACT_SITE 378
FT /note="Schiff-base intermediate with substrate; via pyruvic
FT acid; for decarboxylase activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT SITE 377..378
FT /note="Cleavage (non-hydrolytic); by autocatalysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
FT MOD_RES 378
FT /note="Pyruvic acid (Ser); by autocatalysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03208"
SQ SEQUENCE 409 AA; 46910 MW; 85F3212B2D7193DA CRC64;
MATSVVHRFL RLLHGVAPWR SSLHHREITA LSQSLQPLWK LPFRAFRTDA RKVHTAPART
TFLLRPLPIL LATGGGYAGY RQYEKYRERE LEKLGLEIPP KLAGHWEVAL YKSVPTRLLS
RAWGRLNQVE LPHWLRRPVY SLYIWTFGVN MKEAAVEDLH HYRNLSEFFR RKLKPQARPV
CGLHSVISPS DGKILNFGQV KNCEVEQVKG VTYSLESFLG PRTYTEDLPF PPAASCDSFK
NQLVTREGNE LYHCVIYLAP GDYHCFHSPT DWTVSHRRHF PGSLMSVNPG MARWIKELFC
HNERVVLTGD WKHGFFSLTA VGATNVGSIR IYFDRDLHTN SPRHSKGSYN DFSFVTHTNR
EGVPMRKGEH LGEFNLGSTI VLIFEAPKDF NFQLKTGQKI RFGEALGSL
//
