Q32904 · CB23_PEA

Function

function

The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated.
May channel protons produced in the catalytic Mn center of water oxidation into the thylakoid lumen.

Cofactor

Note: Binds at least 14 chlorophylls (8 Chl-a and 6 Chl-b) and carotenoids such as lutein and neoxanthin.

Features

Showing features for binding site.

127520406080100120140160180200220240260
TypeIDPosition(s)Description
Binding site58Mg (UniProtKB | ChEBI) of chlorophyll b 1 (UniProtKB | ChEBI); axial binding residue
Binding site78chlorophyll a 1 (UniProtKB | ChEBI)
Binding site84chlorophyll a 1 (UniProtKB | ChEBI)
Binding site102Mg (UniProtKB | ChEBI) of chlorophyll a 1 (UniProtKB | ChEBI); axial binding residue
Binding site107chlorophyll b 2 (UniProtKB | ChEBI)
Binding site142Mg (UniProtKB | ChEBI) of chlorophyll b 2 (UniProtKB | ChEBI); axial binding residue
Binding site169Mg (UniProtKB | ChEBI) of chlorophyll b 3 (UniProtKB | ChEBI); axial binding residue
Binding site172chlorophyll b 4 (UniProtKB | ChEBI)
Binding site226chlorophyll a 5 (UniProtKB | ChEBI)
Binding site227Mg (UniProtKB | ChEBI) of chlorophyll a 3 (UniProtKB | ChEBI); axial binding residue
Binding site230Mg (UniProtKB | ChEBI) of chlorophyll a 4 (UniProtKB | ChEBI); axial binding residue
Binding site232chlorophyll a 1 (UniProtKB | ChEBI)
Binding site244Mg (UniProtKB | ChEBI) of chlorophyll a 5 (UniProtKB | ChEBI); axial binding residue
Binding site259Mg (UniProtKB | ChEBI) of chlorophyll a 6 (UniProtKB | ChEBI); axial binding residue

GO annotations

AspectTerm
Cellular Componentchloroplast thylakoid membrane
Cellular Componentphotosystem I
Cellular Componentphotosystem II
Cellular Componentplastoglobule
Molecular Functionchlorophyll binding
Molecular Functionmetal ion binding
Biological Processphotosynthesis, light harvesting in photosystem I
Biological Processresponse to light stimulus

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Chlorophyll a-b binding protein 3, chloroplastic
  • Alternative names
    • LHCII type III CAB-3

Gene names

    • Name
      lhca3

Organism names

  • Taxonomic identifier
  • Strain
    • cv. Little Marvel
  • Taxonomic lineage
    Eukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > eudicotyledons > Gunneridae > Pentapetalae > rosids > fabids > Fabales > Fabaceae > Papilionoideae > 50 kb inversion clade > NPAAA clade > Hologalegina > IRL clade > Fabeae > Pisum

Accessions

  • Primary accession
    Q32904
  • Secondary accessions
    • P35388

Subcellular Location

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane233-253Helical

Keywords

PTM/Processing

Features

Showing features for chain, transit peptide.

Type
IDPosition(s)Description
ChainPRO_0000310859?-275Chlorophyll a-b binding protein 3, chloroplastic
Transit peptide1-?Chloroplast

Post-translational modification

Photoregulated by reversible phosphorylation of its threonine residues.

Keywords

Interaction

Subunit

The LHC complex consists of chlorophyll a-b binding proteins.

Protein-protein interaction databases

Family & Domains

Domain

The N-terminus of the protein extends into the stroma where it is involved with adhesion of granal membranes and post-translational modifications; both are believed to mediate the distribution of excitation energy between photosystems I and II.

Sequence similarities

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Sequence processing
    The displayed sequence is further processed into a mature form.
  • Length
    275
  • Mass (Da)
    29,607
  • Last updated
    1996-11-01 v1
  • Checksum
    49AB86D1CE247A31
MATQALVSSSSLTFAAEAVRQSFRARSLPSSVGCSRKGLVRAAATPPVKQGGVDRPLWFASKQSLSYLDGSLPGDYGFDPLGLSDPEGTGGFIEPRWLAYGEVINGRFAMLGAVGAIAPEYLGKVGLIPQETALAWFQTGVIPPAGTYNYWADNYTLFVLEMALMGFAEHRRFQDWAKPGSMGKQYFLGLEKGFGGSGNPAYPGGPFFNPLGFGKDEKSLKELKLKEVKNGRLAMLAILGYFIQGLVTGVGPYQNLLDHVADPVNNNVLTSLKFH

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
L19651
EMBL· GenBank· DDBJ
AAA84545.1
EMBL· GenBank· DDBJ
mRNA

Similar Proteins

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