A0A4D6JD75 · A0A4D6JD75_9MONI

  • Protein
    Light-independent protochlorophyllide reductase subunit N
  • Gene
    chlN
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    3/5

Function

function

Component of the dark-operative protochlorophyllide reductase (DPOR) that uses Mg-ATP and reduced ferredoxin to reduce ring D of protochlorophyllide (Pchlide) to form chlorophyllide a (Chlide). This reaction is light-independent. The NB-protein (ChlN-ChlB) is the catalytic component of the complex.

Catalytic activity

Cofactor

[4Fe-4S] cluster (UniProtKB | Rhea| CHEBI:49883 )

Note: Binds 1 [4Fe-4S] cluster per heterodimer. The cluster is bound at the heterodimer interface by residues from both subunits.

Pathway

Porphyrin-containing compound metabolism; chlorophyll biosynthesis (light-independent).

Features

Showing features for binding site.

TypeIDPosition(s)Description
Binding site20[4Fe-4S] cluster (UniProtKB | ChEBI); ligand shared with heterodimeric partner
Binding site45[4Fe-4S] cluster (UniProtKB | ChEBI); ligand shared with heterodimeric partner
Binding site105[4Fe-4S] cluster (UniProtKB | ChEBI); ligand shared with heterodimeric partner

GO annotations

AspectTerm
Cellular Componentchloroplast
Molecular Function4 iron, 4 sulfur cluster binding
Molecular FunctionATP binding
Molecular Functionmetal ion binding
Molecular Functionoxidoreductase activity, acting on iron-sulfur proteins as donors
Molecular Functionoxidoreductase activity, acting on the CH-CH group of donors, iron-sulfur protein as acceptor
Biological Processlight-independent chlorophyll biosynthetic process
Biological Processphotosynthesis, dark reaction

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Light-independent protochlorophyllide reductase subunit N
  • EC number
  • Short names
    DPOR subunit N
    ; LI-POR subunit N

Gene names

    • Name
      chlN

Encoded on

  • Chloroplast

Organism names

  • Taxonomic identifier
  • Organism
  • Taxonomic lineage
    Eukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Polypodiopsida > Polypodiidae > Osmundales > Osmundaceae > Osmunda

Accessions

  • Primary accession
    A0A4D6JD75

Subcellular Location

Keywords

Interaction

Subunit

Protochlorophyllide reductase is composed of three subunits; ChlL, ChlN and ChlB. Forms a heterotetramer of two ChlB and two ChlN subunits.

Family & Domains

Features

Showing features for domain, region, compositional bias.

TypeIDPosition(s)Description
Domain20-421Nitrogenase/oxidoreductase component 1
Region173-195Disordered
Compositional bias178-193Basic and acidic residues

Sequence similarities

Belongs to the BchN/ChlN family.

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    466
  • Mass (Da)
    52,810
  • Last updated
    2019-07-03 v1
  • Checksum
    9EB4807C583C3AF8
MKTLETLTFECETGNYHTFCPISCVAWLYQKIEDSFFLVVGTKTCGYFLQNALGVMIFAEPRYAMAELEEGDISAQLNDQEELKRLRLRIKRDRNPSVIIWIGTCTTEIIKMDLEGIAPKLETEPGVPIVVARANGLDYAFTQGEDTVLAAMTHRCPEHGSLGYKQKQDLVYGSDNPLVKPRRDDRKGKESENHPPLVLFGSLPSTVASQLNSELERQSIRVSGWLPSQRYAELPSLGEGVHVRGVNPFLSRTATTLMRRRKCRLIGAPFPIGPDGTRAWIEKICSVFGIKPHGLEERENLVWDNLKDYLRLVTGKSVFFTGDNLSEISLARFLIRCGMTVYEIGIPYMDKRYQAAELALLRNTCREMSIPMPRIVEKPDNYNQIQRMRELQPDLAITGMAHANPSEARGIDTKWSVEFTFAQIHGSTNARDVLELVTRPLRRNNKLEHLGWTNLSKQTTTQPFTN

Features

Showing features for compositional bias.

TypeIDPosition(s)Description
Compositional bias178-193Basic and acidic residues

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
MK554796
EMBL· GenBank· DDBJ
QCD15742.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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