NCBI Accession #
NP_564339.1
NCBI GenBank Nucleotide #
NM_102731.2
NCBI Official Full Name
chlorophyll a-b binding protein 2/3
NCBI Official Symbol
CAB3
NCBI Official Synonym Symbols
AB180; CAB3; CELLULOSE SYNTHASE LIKE B3; chlorophyll A/B binding protein 3; CSLB3; F1N18.5; LHCB1.2; LIGHT HARVESTING CHLOROPHYLL A/B BINDING PROTEIN 1.2
NCBI Protein Information
chlorophyll a-b binding protein 2/3
NCBI Summary
member of Chlorophyll a/b-binding protein family
UniProt Gene Name
LHCB1.1
UniProt Synonym Gene Names
AB165; CAB2; LHCP-B; CAB-165
UniProt Protein Name
Chlorophyll a-b binding protein 2, chloroplastic
UniProt Synonym Protein Names
Chlorophyll a-b protein 165; CAB-165; LHCII type I CAB-2
UniProt Entry Name
CB1A_ARATH
UniProt Primary Accession #
P0CJ48
UniProt Secondary Accession #
P04777; P83754
UniProt Related Accession #
P0CJ48
UniProt Comments
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.Cofactor: Binds at least 14 chlorophylls (8 Chl-a and 6 Chl-b) and carotenoids such as lutein and neoxanthin By similarity.Subunit structure: 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.Subcellular location: Plastid › chloroplast thylakoid membrane; Multi-pass membrane protein. 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.The L18 domain (188-205) is required for the transit complex formation with CAO/cpSRP43 and the targeting to the thylakoid.The T14 domain (211-224) is required for the interaction with LTD and the translocation across the envelope.Post-translational modification: Photoregulated by reversible phosphorylation of its threonine residues By similarity.Sequence similarities: Belongs to the light-harvesting chlorophyll a/b-binding (LHC) protein family.