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A0A2G6H089 · A0A2G6H089_UNCBA

  • Protein
    Phosphatidylserine decarboxylase proenzyme
  • Gene
    psd
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    3/5

Function

function

Catalyzes the formation of phosphatidylethanolamine (PtdEtn) from phosphatidylserine (PtdSer).

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

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

Features

Showing features for site, active site.

Type
IDPosition(s)Description
Site184-185Cleavage (non-hydrolytic); by autocatalysis
Active site185Schiff-base intermediate with substrate; via pyruvic acid

GO annotations

AspectTerm
Cellular Componentplasma membrane
Molecular Functionphosphatidylserine decarboxylase activity
Biological Processphosphatidylethanolamine biosynthetic process

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

Gene names

    • Name
      psd
    • ORF names
      CSA96_04215

Organism names

Accessions

  • Primary accession
    A0A2G6H089

Proteomes

Subcellular Location

Cell membrane
; Peripheral membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane9-29Helical
Transmembrane35-52Helical

Keywords

PTM/Processing

Features

Showing features for chain, modified residue.

Type
IDPosition(s)Description
ChainPRO_50232692971-184Phosphatidylserine decarboxylase beta chain
Modified residue185Pyruvic acid (Ser); by autocatalysis
ChainPRO_5023269296185-216Phosphatidylserine decarboxylase 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 post-translation cleavage follows an unusual pathway, termed non-hydrolytic serinolysis, 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.

Keywords

Interaction

Subunit

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

Family & Domains

Sequence similarities

Belongs to the phosphatidylserine decarboxylase family. PSD-A subfamily.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    216
  • Mass (Da)
    24,175
  • Last updated
    2018-01-31 v1
  • MD5 Checksum
    EFB940BB601F03B9B439374F8132EC06
MPIHKEGRAIVAITVLLLVAVLALAAFLLSSWLNLLLQLLAIAILVLVLRFFRVPARRPFLEESTVCSPADGKVVVIERVENQAFMGGPCMQISIFMSIHNVHINYVPIDGKVSYLKYYPGKYLLARHPKSSELNERWSTGIETAYGRIMLTQIAGYVARRIRNYCSDKEELKQGNELGFIRFGSRVDVFLPLDAAIKVELGEKVYGGISPLARLN

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
PDRI01000054
EMBL· GenBank· DDBJ
PID92257.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
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