UniProt functional annotation for Q93WD2

UniProt code: Q93WD2.

Organism:		Chlamydomonas reinhardtii (Chlamydomonas smithii).
Taxonomy:		Eukaryota; Viridiplantae; Chlorophyta; core chlorophytes; Chlorophyceae; CS clade; Chlamydomonadales; Chlamydomonadaceae; Chlamydomonas.
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. CP29 facilitates the State 1 to State 2 transition, where State I is induced by excess photosystem I (PSI) light and State 2 is induced by excess photosystem II (PSII) light. {ECO:0000269|PubMed:16156798, ECO:0000305}.
Cofactor:		Note=Binds at least 14 chlorophylls (8 Chl-a and 6 Chl-b) and carotenoids such as lutein and neoxanthin. {ECO:0000250|UniProtKB:P12333};
Subunit:		The LHC complex consists of chlorophyll a-b binding proteins. {ECO:0000305}.
Subcellular location:		Plastid, chloroplast thylakoid membrane {ECO:0000269|PubMed:15094049}; Multi-pass membrane protein {ECO:0000269|PubMed:15094049}.
Induction:		Repressed by high light intensity due to a transient decrease in mRNA stability. Also down-regulated at lower light intensities by low temperature or limited carbon dioxide supply. {ECO:0000269|PubMed:12226512, ECO:0000269|Ref.2}.
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.
Ptm:		Reversible phosphorylation plays a role in the State transition process and determines the affinity of LHCII for PSI and PSII. {ECO:0000269|PubMed:15094049, ECO:0000269|PubMed:16156798}.
Similarity:		Belongs to the light-harvesting chlorophyll a/b-binding (LHC) protein family. {ECO:0000255}.

Annotations taken from UniProtKB at the EBI.