UniProt Accession

Q93WD2; CB29_CHLRE 

Theoretical PI

6.22 

Molecular Weight

29937.91 

Genbank Protein ID

AY171230;AB051207;AB051211 

Genbank Nucleotide ID

BAB64415.1;BAB64419.1;AAO16494.1 

Protein Name

Chlorophyll a-b binding protein CP29; Lhcbm4 

Gene Name

Lhcb4 

Created Date

2004-07-05 

Organism

Chlamydomonas reinhardtii(Chlamydomonas smithii) 

NCBI Taxa ID

3055 

Phosphorylation Sites

Position	Peptide	Source	References
11	*MVFKFPTPPGTQKK	dbPPT	[1]
103	AAKNNKGSVEAIVQA	dbPPT	[2]
33	ATTKKVATSTGTRSG	dbPPT	[2]
7	KFPTPPGTQKKAGTT	dbPPT	[1]
7	*MVFKFPTPPGTQKK	dbPPT	[2]
17	GTQKKAGTTATKPAP	dbPPT	[2]

Functional Description

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. 

Sequence Annotation

initiator methionine 1 Removed
chain 2 280 Chlorophyll a-b binding protein CP29
transmembrane region 143 163 Helical;
transmembrane region 176 196 Helical;
transmembrane region 244 264 Helical;
metal ion-binding site 47 Magnesium (chlorophyll-b 1 axial ligand); via carbonyl oxygen
metal ion-binding site 137 Magnesium (chlorophyll-a 1 axial ligand)
metal ion-binding site 140 Magnesium (chlorophyll-a 2 axial ligand)
metal ion-binding site 199 Magnesium (chlorophyll-b 3 axial ligand)
metal ion-binding site 238 Magnesium (chlorophyll-a 3 axial ligand)
metal ion-binding site 241 Magnesium (chlorophyll-a 4 axial ligand)
metal ion-binding site 255 Magnesium (chlorophyll-a 5 axial ligand)
binding site 73 Chlorophyll-a 1; via amide nitrogen
binding site 79 Chlorophyll-a 1
binding site 183 Chlorophyll-b 3
binding site 202 Chlorophyll-b 4
binding site 243 Chlorophyll-a 1
modified residue 2 N-acetylvaline
modified residue 7 Phosphothreonine; in State 1 and State 2
modified residue 17 Phosphothreonine; in State 2
modified residue 33 Phosphothreonine; in State 1 and State 2
modified residue 103 Phosphoserine; in State 2

Keyword

Acetylation,Chlorophyll,Chloroplast,Chromophore,Direct protein sequencing,Magnesium,Membrane,Metal-binding,Phosphoprotein,Photosynthesis,Photosystem I,Photosystem II,Plastid,Thylakoid,Transmembrane,Transmembrane helix 

Sequence Source

UniProt 

Protein Sequence

Gene Ontology

GO:0009941; C: chloroplast envelope; IEA: EnsemblPlants/Gramene
GO:0016021; C: integral component of membrane; IEA: UniProtKB-KW
GO:0009522; C: photosystem I; IEA: UniProtKB-KW
GO:0009523; C: photosystem II; IEA: UniProtKB-KW
GO:0010287; C: plastoglobule; IEA: EnsemblPlants/Gramene
GO:0009503; C: thylakoid light-harvesting complex; IDA: UniProtKB
GO:0016168; F: chlorophyll binding; NAS: UniProtKB
GO:0046872; F: metal ion binding; IEA: UniProtKB-KW
GO:0009765; P: photosynthesis, light harvesting; NAS: UniProtKB
GO:0018298; P: protein-chromophore linkage; IEA: UniProtKB-KW
GO:0009637; P: response to blue light; IEA: EnsemblPlants/Gramene
GO:0010218; P: response to far red light; IEA: EnsemblPlants/Gramene
GO:0010114; P: response to red light; IEA: EnsemblPlants/Gramene 

Interpro

InterPro; IPR001344; Chloro_AB-bd_pln
InterPro; IPR022796; Chloroa_b-bind
InterPro; IPR023329; Chlorophyll_a/b-bd_dom

Pfam

Pfam; PF00504; Chloroa_b-bind 

SMART

 

PROSITE

 

PRINTS