P15773 · CB2_MALDO
- ProteinChlorophyll a-b binding protein AB10, chloroplastic
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids268 (go to sequence)
- Protein existenceInferred from homology
- Annotation score4/5
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.
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.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Binding site | 61 | Mg (UniProtKB | ChEBI) of chlorophyll b 1 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 83 | chlorophyll a 1 (UniProtKB | ChEBI) | |||
Binding site | 89 | chlorophyll a 1 (UniProtKB | ChEBI) | |||
Binding site | 102 | Mg (UniProtKB | ChEBI) of chlorophyll a 1 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 105 | Mg (UniProtKB | ChEBI) of chlorophyll a 2 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 107 | chlorophyll b 2 (UniProtKB | ChEBI) | |||
Binding site | 140 | chlorophyll a 3 (UniProtKB | ChEBI) | |||
Binding site | 150 | chlorophyll a 3 (UniProtKB | ChEBI) | |||
Binding site | 156 | Mg (UniProtKB | ChEBI) of chlorophyll b 2 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 160 | chlorophyll b 3 (UniProtKB | ChEBI) | |||
Binding site | 176 | Mg (UniProtKB | ChEBI) of chlorophyll b 3 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 179 | chlorophyll b 4 (UniProtKB | ChEBI) | |||
Binding site | 185 | chlorophyll b 2 (UniProtKB | ChEBI) | |||
Binding site | 215 | chlorophyll a 5 (UniProtKB | ChEBI) | |||
Binding site | 216 | Mg (UniProtKB | ChEBI) of chlorophyll a 3 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 219 | Mg (UniProtKB | ChEBI) of chlorophyll a 4 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 221 | chlorophyll a 1 (UniProtKB | ChEBI) | |||
Binding site | 233 | Mg (UniProtKB | ChEBI) of chlorophyll a 5 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 248 | Mg (UniProtKB | ChEBI) of chlorophyll a 6 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 257 | chlorophyll a 6 (UniProtKB | ChEBI) | |||
Binding site | 264 | chlorophyll b 5 (UniProtKB | ChEBI) | |||
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | chloroplast envelope | |
Cellular Component | chloroplast thylakoid membrane | |
Cellular Component | photosystem I | |
Cellular Component | photosystem II | |
Cellular Component | plastoglobule | |
Molecular Function | chlorophyll binding | |
Molecular Function | metal ion binding | |
Biological Process | photosynthesis, light harvesting in photosystem I | |
Biological Process | response to light stimulus |
Keywords
- Biological process
- Ligand
Names & Taxonomy
Protein names
- Recommended nameChlorophyll a-b binding protein AB10, chloroplastic
- Alternative names
Organism names
- Strain
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > eudicotyledons > Gunneridae > Pentapetalae > rosids > fabids > Rosales > Rosaceae > Amygdaloideae > Maleae > Malus
Accessions
- Primary accessionP15773
Subcellular Location
UniProt Annotation
GO Annotation
Plastid, chloroplast thylakoid membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Transmembrane | 108-125 | Helical | |||
Transmembrane | 155-175 | Helical | |||
Transmembrane | 222-238 | Helical | |||
Keywords
- Cellular component
PTM/Processing
Features
Showing features for transit peptide, chain.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Transit peptide | 1-40 | Chloroplast | |||
Chain | PRO_0000003674 | 41-268 | Chlorophyll a-b binding protein AB10, chloroplastic | ||
Post-translational modification
Photoregulated by reversible phosphorylation of its threonine residues.
Keywords
- PTM
Interaction
Subunit
The LHC complex consists of chlorophyll a-b binding proteins.
Structure
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
Belongs to the light-harvesting chlorophyll a/b-binding (LHC) protein family.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusComplete
- Sequence processingThe displayed sequence is further processed into a mature form.
- Length268
- Mass (Da)29,212
- Last updated1990-04-01 v1
- MD5 ChecksumE52A5565577C6827C7E0E4BA2159171D
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
X17697 EMBL· GenBank· DDBJ | CAA35690.1 EMBL· GenBank· DDBJ | Genomic DNA |