P14276 · CB2E_SOLLC
- ProteinChlorophyll a-b binding protein 3A, chloroplastic
- GeneCAB3A
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids267 (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 | 154 | Mg (UniProtKB | ChEBI) of chlorophyll b 2 (UniProtKB | ChEBI); axial binding residue | ||||
Sequence: V | ||||||
Binding site | 158 | chlorophyll b 3 (UniProtKB | ChEBI) | ||||
Sequence: S | ||||||
Binding site | 166 | chlorophyll b 4 (UniProtKB | ChEBI) | ||||
Sequence: Q | ||||||
Binding site | 166 | chlorophyll b 5 (UniProtKB | ChEBI) | ||||
Sequence: Q | ||||||
Binding site | 174 | Mg (UniProtKB | ChEBI) of chlorophyll b 3 (UniProtKB | ChEBI); axial binding residue | ||||
Sequence: E | ||||||
Binding site | 177 | chlorophyll b 4 (UniProtKB | ChEBI) | ||||
Sequence: R | ||||||
Binding site | 183 | chlorophyll b 2 (UniProtKB | ChEBI) | ||||
Sequence: L | ||||||
Binding site | 214 | chlorophyll a 5 (UniProtKB | ChEBI) | ||||
Sequence: K | ||||||
Binding site | 215 | Mg (UniProtKB | ChEBI) of chlorophyll a 3 (UniProtKB | ChEBI); axial binding residue | ||||
Sequence: E | ||||||
Binding site | 218 | Mg (UniProtKB | ChEBI) of chlorophyll a 4 (UniProtKB | ChEBI); axial binding residue | ||||
Sequence: N | ||||||
Binding site | 220 | chlorophyll a 1 (UniProtKB | ChEBI) | ||||
Sequence: R | ||||||
Binding site | 232 | Mg (UniProtKB | ChEBI) of chlorophyll a 5 (UniProtKB | ChEBI); axial binding residue | ||||
Sequence: Q | ||||||
Binding site | 247 | Mg (UniProtKB | ChEBI) of chlorophyll a 6 (UniProtKB | ChEBI); axial binding residue | ||||
Sequence: H | ||||||
Binding site | 256 | chlorophyll a 6 (UniProtKB | ChEBI) | ||||
Sequence: A | ||||||
Binding site | 263 | chlorophyll b 5 (UniProtKB | ChEBI) | ||||
Sequence: F |
GO annotations
all annotations | all molecular function | nucleotide binding | molecular_function | nucleic acid binding | dna binding | chromatin binding | dna-binding transcription factor activity | rna binding | cytoskeletal motor activity | catalytic activity | nuclease activity | signaling receptor binding | structural molecule activity | transporter activity | binding | protein binding | translation factor activity, rna binding | lipid binding | kinase activity | transferase activity | hydrolase activity | oxygen binding | enzyme regulator activity | carbohydrate binding | signaling receptor activity | translation regulator activity | transcription regulator activity | other molecular function | all biological process | carbohydrate metabolic process | generation of precursor metabolites and energy | nucleobase-containing compound metabolic process | dna metabolic process | translation | lipid metabolic process | transport | response to stress | cell cycle | cell communication | signal transduction | cell-cell signaling | multicellular organism development | circadian rhythm | biological_process | metabolic process | catabolic process | biosynthetic process | response to light stimulus | response to external stimulus | tropism | response to biotic stimulus | response to abiotic stimulus | response to endogenous stimulus | embryo development | post-embryonic development | fruit ripening | abscission | pollination | flower development | cellular process | programmed cell death | photosynthesis | cellular component organization | cell growth | protein metabolic process | cellular homeostasis | secondary metabolic process | reproductive process | cell differentiation | protein modification process | growth | epigenetic regulation of gene expression | response to chemical | anatomical structure development | regulation of molecular function | other biological process | all cellular component | cellular_component | extracellular region | cell wall | intracellular anatomical structure | nucleus | nuclear envelope | nucleoplasm | nucleolus | cytoplasm | mitochondrion | lysosome | endosome | vacuole | peroxisome | endoplasmic reticulum | golgi apparatus | cytosol | ribosome | cytoskeleton | plasma membrane | chloroplast | plastid | thylakoid | membrane | external encapsulating structure | other cellular component | |||
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Aspect | Term | |
---|---|---|
Cellular Component | chloroplast thylakoid membrane | |
Cellular Component | photosystem I | |
Cellular Component | photosystem II | |
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 3A, chloroplastic
- Alternative names
Gene names
Organism names
- Strain
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > eudicotyledons > Gunneridae > Pentapetalae > asterids > lamiids > Solanales > Solanaceae > Solanoideae > Solaneae > Solanum > Solanum subgen. Lycopersicon
Accessions
- Primary accessionP14276
Proteomes
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 | 153-173 | Helical | ||||
Sequence: LVHAQSILAIWACQVVLMGAV | ||||||
Transmembrane | 221-241 | Helical | ||||
Sequence: LAMFSMFGFFVQAIVTGKGPL |
Keywords
- Cellular component
PTM/Processing
Features
Showing features for transit peptide, chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Transit peptide | 1-34 | Chloroplast | ||||
Sequence: MAASTMALSSSTFAGKTVKLAPSSSEITGNGRIT | ||||||
Chain | PRO_0000003665 | 35-267 | Chlorophyll a-b binding protein 3A, chloroplastic | |||
Sequence: MRKTAAKPKPASSGSPWXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXSLVHAQSILAIWACQVVLMGAVEGYRIAGGPLGEVVDPLYPGGSFDPLGLAEDPEAFAELKVKEIKNGRLAMFSMFGFFVQAIVTGKGPLENLADHIADPVNNNAWAFATNFVPGK |
Post-translational modification
Photoregulated by reversible phosphorylation of its threonine residues.
Keywords
- PTM
Proteomic databases
Expression
Gene expression databases
Interaction
Subunit
The LHC complex consists of chlorophyll a-b binding proteins.
Protein-protein interaction databases
Structure
Family & Domains
Features
Showing features for region.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Region | 23-56 | Disordered | ||||
Sequence: SSSEITGNGRITMRKTAAKPKPASSGSPWXXXXX |
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
Phylogenomic databases
Family and domain databases
Sequence
- Sequence statusFragments
- Sequence processingThe displayed sequence is further processed into a mature form.
- Length267
- Mass (Da)28,587
- Last updated1990-01-01 v1
- ChecksumABFDD1BCCD87358B
Keywords
- Technical term