Family

Chlorophyll A-B binding protein, plant (IPR001344)

Short name: Chloro_AB-bd_pln

Family relationships

Description

The light-harvesting complex (LHC) consists of chlorophylls A and B and the chlorophyll A-B binding protein. LHC functions as a light receptor that captures and delivers excitation energy to photosystems I and II with which it is closely associated. Under changing light conditions, the reversible phosphorylation of light harvesting chlorophyll a/b binding proteins (LHCII) represents a system for balancing the excitation energy between the two photosystems [PMID: 15225658].

The N terminus of the chlorophyll A-B binding protein extends into the stroma where it is involved with adhesion of granal membranes and photo-regulated by reversible phosphorylation of its threonine residues [PMID: 10682866]. Both these processes are believed to mediate the distribution of excitation energy between photosystems I and II.

This family also includes the photosystem II protein PsbS, which plays a role in energy-dependent quenching that increases thermal dissipation of excess absorbed light energy in the photosystem [PMID: 15033974].

This entry is limited to plant proteins.

GO terms

Biological Process

GO:0009765 photosynthesis, light harvesting

Molecular Function

No terms assigned in this category.

Cellular Component

GO:0016020 membrane

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.
PANTHER