LMPD Database

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LMP010029

UniProt Annotations

Entry Information

Gene Name	chlorophyll A/B-binding protein 2
Protein Entry	CB1A_ARATH
UniProt ID	Q8VZ87
Species	Arabidopsis

Comments

Comment type	Description
Cofactor	Note=Binds at least 14 chlorophylls (8 Chl-a and 6 Chl-b) and carotenoids such as lutein and neoxanthin. {ECO:0000250};
Domain	The L18 domain (188-205) is required for the transit complex formation with CAO/cpSRP43 and the targeting to the thylakoid.
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.
Domain	The T14 domain (211-224) is required for the interaction with LTD and the translocation across the envelope.
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.
Ptm	Photoregulated by reversible phosphorylation of its threonine residues. {ECO:0000250}.
Similarity	Belongs to the light-harvesting chlorophyll a/b- binding (LHC) protein family. {ECO:0000305}.
Subcellular Location	Plastid, chloroplast thylakoid membrane; Multi-pass membrane protein.
Subunit	The LHC complex consists of chlorophyll a-b binding proteins. Interacts (via T14 domain) with LTD. Interacts with CAO/cpSRP43 during its post-translational targeting to the thylakoid. {ECO:0000269\|PubMed:18621669, ECO:0000269\|PubMed:21505433}.