A0A9N9BNF4 · A0A9N9BNF4_9GLOM

  • Protein
    Phosphatidylserine decarboxylase proenzyme 2
  • Gene
    PSD2
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    4/5

Function

function

Catalyzes the formation of phosphatidylethanolamine (PtdEtn) from phosphatidylserine (PtdSer). Plays a central role in phospholipid metabolism and in the interorganelle trafficking of phosphatidylserine.

Caution

The sequence shown here is derived from an EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is preliminary data.

Catalytic activity

Cofactor

pyruvate (UniProtKB | Rhea| CHEBI:15361 )

Note: Binds 1 pyruvoyl group covalently per subunit.

Pathway

Lipid metabolism.
Phospholipid metabolism; phosphatidylethanolamine biosynthesis; phosphatidylethanolamine from CDP-diacylglycerol: step 2/2.

Features

Showing features for active site, site.

TypeIDPosition(s)Description
Active site594Charge relay system; for autoendoproteolytic cleavage activity
Active site650Charge relay system; for autoendoproteolytic cleavage activity
Site736-737Cleavage (non-hydrolytic); by autocatalysis
Active site737Charge relay system; for autoendoproteolytic cleavage activity
Active site737Schiff-base intermediate with substrate; via pyruvic acid; for decarboxylase activity

GO annotations

AspectTerm
Cellular Componentendosome membrane
Cellular ComponentGolgi membrane
Cellular ComponentGolgi stack
Molecular Functioncalcium ion binding
Molecular Functionphosphatidylserine decarboxylase activity
Biological Processphosphatidylethanolamine biosynthetic process
Biological Processprotein autoprocessing

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

Gene names

    • Name
      PSD2
    • ORF names
      ALEPTO_LOCUS6951

Organism names

  • Taxonomic identifier
  • Organism
  • Strain
    • FL130A
  • Taxonomic lineage
    Eukaryota > Fungi > Fungi incertae sedis > Mucoromycota > Glomeromycotina > Glomeromycetes > Archaeosporales > Ambisporaceae > Ambispora

Accessions

  • Primary accession
    A0A9N9BNF4

Proteomes

Subcellular Location

Golgi apparatus membrane
; Peripheral membrane protein
Endosome membrane
; Peripheral membrane protein

Keywords

PTM/Processing

Features

Showing features for chain, modified residue.

TypeIDPosition(s)Description
ChainPRO_50405513031-736Phosphatidylserine decarboxylase 2 beta chain
Modified residue737Pyruvic acid (Ser); by autocatalysis
ChainPRO_5040551302737-779Phosphatidylserine decarboxylase 2 alpha chain

Post-translational modification

Is synthesized initially as an inactive proenzyme. Formation of the active enzyme involves a self-maturation process in which the active site pyruvoyl group is generated from an internal serine residue via an autocatalytic post-translational modification. Two non-identical subunits are generated from the proenzyme in this reaction, and the pyruvate is formed at the N-terminus of the alpha chain, which is derived from the carboxyl end of the proenzyme. The autoendoproteolytic cleavage occurs by a canonical serine protease mechanism, in which the side chain hydroxyl group of the serine supplies its oxygen atom to form the C-terminus of the beta chain, while the remainder of the serine residue undergoes an oxidative deamination to produce ammonia and the pyruvoyl prosthetic group on the alpha chain. During this reaction, the Ser that is part of the protease active site of the proenzyme becomes the pyruvoyl prosthetic group, which constitutes an essential element of the active site of the mature decarboxylase.

Keywords

Interaction

Subunit

Heterodimer of a large membrane-associated beta subunit and a small pyruvoyl-containing alpha subunit.

Family & Domains

Features

Showing features for domain, region, compositional bias.

TypeIDPosition(s)Description
Domain1-115C2
Region120-163Disordered
Compositional bias121-163Polar residues
Domain148-274C2
Domain313-348EF-hand

Domain

The C2 domains have an essential, but non-catalytic function. They may facilitate interactions with other proteins and are required for lipid transport function.

Sequence similarities

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    779
  • Mass (Da)
    88,587
  • Last updated
    2023-09-13 v1
  • Checksum
    A47ED190F52513D7
MSSQGFNVVLRVDVIQAQGLAAKDRNGFSDPYVVVTIGDETHQTQVINKNLSPRWDASFDAIINPQNPPREILFTCWDKDLLGKDFLGEFKVSLEHHWKDITVGYNDTGNKPKWYALENTSRPKEQISANTHVESNENYYGHGKRPSDSSSISLSSTVSSSSGRSNILGLTFLEVTKAEDLPPEKAAVGSKFDMDPFVVISFSKQTFRTRTIQHCLNPTWNEKLYFTVKQHESNFFIKFSVYDQDRISFNDLIADCQFPIQALIASADSNQLPKNINEGMVEYVMPLELRTKEKYDNLPKLWIRGRFIPFEHLRHQFWHALAKLYDSDENGVLNFVELSTMVNSLGSLTDRSIEGFFMRYNKDPRTGELTFEELCECLEQRLLEEGSNTASINNGETDTEHLVELTECPFCHKPNLQKHSVADTITHVAICASTDWENVDKFIVGDFVTESQAQRKWISKIISKVGYGSFRVGANNANIIVQDRITGQLVEEKMPTYIRLGIRLLYKGVKQVEAKTTKRLLETLSIKQGKKYNSPSSINDIPSFIAFHQLNVNEVLAPLESFKNFNEFFYRKLKPDARTLDSPNDPRVIVSPADCRMMAFSRIDEATNIWIKGQNFSLERLLENQDAAEQFHGGSLGIFRLAPQDYHRFHFPVDGLLGEPLHIKGAYYTVNPMAIRSELDVYGENKRAVSYIESTQFGKVAYVTIGAMMVGSIEFTSKPHSHVKRFEEHGYFAFGGSTVILLFQKDKMEWDEDILANSQQPLETLVRVGMHVGRATALY

Features

Showing features for compositional bias.

TypeIDPosition(s)Description
Compositional bias121-163Polar residues

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
CAJVPS010002682
EMBL· GenBank· DDBJ
CAG8574107.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

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