Q19V53 · CHLN_CHLAT

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 site22[4Fe-4S] cluster (UniProtKB | ChEBI); ligand shared with heterodimeric partner
Binding site47[4Fe-4S] cluster (UniProtKB | ChEBI); ligand shared with heterodimeric partner
Binding site107[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

Accessions

  • Primary accession
    Q19V53

Subcellular Location

Keywords

PTM/Processing

Features

Showing features for chain.

TypeIDPosition(s)Description
ChainPRO_00003240351-478Light-independent protochlorophyllide reductase subunit N

Interaction

Subunit

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

Structure

Family & Domains

Sequence similarities

Belongs to the BchN/ChlN family.

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    478
  • Mass (Da)
    53,597
  • Last updated
    2007-02-20 v2
  • Checksum
    955D56E38373FF11
MSAMTSDTLTFECETGNYHTFCPISCVAWLYQKIEDSFFLVIGTKTCGYFLQNALGVMIFAEPRYAMAELEEGDISAQLNDYQELKRLCTQIKQDRNPSVIVWIGTCTTEIIKMDLEGMAPKIEQEIKIPIVVARANGLDYAFTQGEDTVLAAMVERCPGETKLSEQSQDKGSSKQNFSSTKGLFSILNFNKKAAADTQPQEAEDYIDHPPLVLFGSLPGPVVSQLTLELKRQKIKVSGWLPSQRYTDLPAVGKGVYVCGVNPFLSRTATILMRRRKCKLIGAPFPIGPDGTRAWVEKICSVFNVEPIGLAERENKIWEGLEDYLQLVRGKSVFFMGDNLLEVSLARFLTRCGMIVYEIGIPYMDKRYQAAELALLEKTCQEMGVPMPRIVEKPDNYNQIQRIRELQPDLAITGMAHANPLEARGISTKWSVEFTFAQIHGFTNARDILELVTRPLRRNNSLEGLGWTSLVKEGVLSN

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
DQ422812
EMBL· GenBank· DDBJ
ABD62180.2
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

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