UniProtKB - Q01667 (CAB6_ARATH)
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Protein
Chlorophyll a-b binding protein 6, chloroplastic
Gene
LHCA1
Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Functioni
The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated.1 Publication
Miscellaneous
Light emission at 684 nm upon excitation at 410 and 470 nm.1 Publication
Cofactori
Note: Binds at least 14 chlorophylls (8 Chl-a and 6 Chl-b) and carotenoids such as lutein and neoxanthin.2 Publications
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Metal bindingi | 48 | Magnesium (chlorophyll-b 1 axial ligand); via carbonyl oxygenBy similarity | 1 | |
Binding sitei | 68 | Chlorophyll-a 1; via amide nitrogenBy similarity | 1 | |
Metal bindingi | 87 | Magnesium (chlorophyll-a 1 axial ligand)By similarity | 1 | |
Metal bindingi | 90 | Magnesium (chlorophyll-a 2 axial ligand)By similarity | 1 | |
Binding sitei | 92 | Chlorophyll-b 2By similarity | 1 | |
Binding sitei | 129 | Chlorophyll-a 3; via amide nitrogenBy similarity | 1 | |
Metal bindingi | 133 | Magnesium (chlorophyll-b 2 axial ligand); via carbonyl oxygenBy similarity | 1 | |
Metal bindingi | 153 | Magnesium (chlorophyll-b 3 axial ligand)By similarity | 1 | |
Binding sitei | 156 | Chlorophyll-b 4By similarity | 1 | |
Binding sitei | 190 | Chlorophyll-a 5By similarity | 1 | |
Metal bindingi | 191 | Magnesium (chlorophyll-a 3 axial ligand)By similarity | 1 | |
Metal bindingi | 194 | Magnesium (chlorophyll-a 4 axial ligand)By similarity | 1 | |
Binding sitei | 196 | Chlorophyll-a 1By similarity | 1 | |
Metal bindingi | 208 | Magnesium (chlorophyll-a 5 axial ligand)By similarity | 1 | |
Metal bindingi | 224 | Magnesium (chlorophyll-a 6 axial ligand)By similarity | 1 |
GO - Molecular functioni
- chlorophyll binding Source: GO_Central
- metal ion binding Source: UniProtKB-KW
- pigment binding Source: GO_Central
- protein domain specific binding Source: CAFA
GO - Biological processi
- photosynthesis, light harvesting in photosystem I Source: UniProtKB
- protein-chromophore linkage Source: UniProtKB-KW
- response to blue light Source: TAIR
- response to cold Source: UniProtKB
- response to far red light Source: TAIR
- response to high light intensity Source: UniProtKB
- response to low light intensity stimulus Source: UniProtKB
- response to red light Source: TAIR
Keywordsi
Biological process | Photosynthesis |
Ligand | Chlorophyll, Chromophore, Magnesium, Metal-binding |
Names & Taxonomyi
Protein namesi | Recommended name: Chlorophyll a-b binding protein 6, chloroplasticAlternative name(s): LHCI-730 LHCII type III CAB-6 Light-harvesting complex protein Lhca11 Publication |
Gene namesi | Name:LHCA11 Publication Synonyms:CAB6 Ordered Locus Names:At3g54890 ORF Names:F28P10.130 |
Organismi | Arabidopsis thaliana (Mouse-ear cress) |
Taxonomic identifieri | 3702 [NCBI] |
Taxonomic lineagei | Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › eudicotyledons › Gunneridae › Pentapetalae › rosids › malvids › Brassicales › Brassicaceae › Camelineae › Arabidopsis |
Proteomesi |
|
Organism-specific databases
Araporti | AT3G54890. |
TAIRi | locus:2082717. AT3G54890. |
Subcellular locationi
Topology
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Transmembranei | 93 – 113 | HelicalSequence analysisAdd BLAST | 21 | |
Transmembranei | 132 – 152 | HelicalSequence analysisAdd BLAST | 21 | |
Transmembranei | 197 – 217 | HelicalSequence analysisAdd BLAST | 21 |
Keywords - Cellular componenti
Chloroplast, Membrane, Photosystem I, Plastid, ThylakoidPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Transit peptidei | 1 – 35 | ChloroplastSequence analysisAdd BLAST | 35 | |
ChainiPRO_0000401362 | 36 – 241 | Chlorophyll a-b binding protein 6, chloroplasticAdd BLAST | 206 |
Post-translational modificationi
Photoregulated by reversible phosphorylation of its threonine residues.By similarity
Keywords - PTMi
PhosphoproteinProteomic databases
PaxDbi | Q01667. |
PRIDEi | Q01667. |
Expressioni
Inductioni
Induced by low light (LL) but repressed by high light (HL). Inhibited by cold.1 Publication
Gene expression databases
ExpressionAtlasi | Q01667. baseline and differential. |
Genevisiblei | Q01667. AT. |
Interactioni
Subunit structurei
The LHC complex consists of chlorophyll a-b binding proteins. Red-emitting heterodimer with LHCA4 (PubMed:21083539). Interacts with LHCA5 (PubMed:21806943, PubMed:15563470).3 Publications
GO - Molecular functioni
- protein domain specific binding Source: CAFA
Protein-protein interaction databases
BioGridi | 9970. 2 interactors. |
DIPi | DIP-59003N. |
IntActi | Q01667. 1 interactor. |
STRINGi | 3702.AT3G54890.1. |
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more detailsFeature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Beta strandi | 51 – 53 | Combined sources | 3 | |
Beta strandi | 67 – 69 | Combined sources | 3 | |
Helixi | 73 – 75 | Combined sources | 3 | |
Helixi | 77 – 97 | Combined sources | 21 | |
Helixi | 99 – 106 | Combined sources | 8 | |
Turni | 112 – 118 | Combined sources | 7 | |
Beta strandi | 119 – 123 | Combined sources | 5 | |
Beta strandi | 129 – 131 | Combined sources | 3 | |
Beta strandi | 133 – 137 | Combined sources | 5 | |
Helixi | 138 – 157 | Combined sources | 20 | |
Helixi | 162 – 166 | Combined sources | 5 | |
Helixi | 170 – 172 | Combined sources | 3 | |
Beta strandi | 174 – 176 | Combined sources | 3 | |
Helixi | 181 – 211 | Combined sources | 31 | |
Helixi | 217 – 226 | Combined sources | 10 | |
Turni | 228 – 230 | Combined sources | 3 | |
Helixi | 234 – 237 | Combined sources | 4 |
3D structure databases
Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
2O01 | X-ray | 3.40 | 1 | 49-235 | [»] | |
2WSC | X-ray | 3.30 | 1 | 1-241 | [»] | |
2WSE | X-ray | 3.49 | 1 | 1-241 | [»] | |
2WSF | X-ray | 3.48 | 1 | 1-241 | [»] | |
4XK8 | X-ray | 2.80 | 1/6 | 46-240 | [»] | |
ProteinModelPortali | Q01667. | |||||
SMRi | Q01667. | |||||
ModBasei | Search... | |||||
MobiDBi | Search... |
Miscellaneous databases
EvolutionaryTracei | Q01667. |
Family & Domainsi
Domaini
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 similaritiesi
Belongs to the light-harvesting chlorophyll a/b-binding (LHC) protein family.Curated
Keywords - Domaini
Transit peptide, Transmembrane, Transmembrane helixPhylogenomic databases
eggNOGi | ENOG410IHXH. Eukaryota. ENOG410XVD6. LUCA. |
HOGENOMi | HOG000238033. |
InParanoidi | Q01667. |
KOi | K08907. |
OMAi | LPFCANA. |
OrthoDBi | EOG09360J56. |
PhylomeDBi | Q01667. |
Family and domain databases
Gene3Di | 1.10.3460.10. 1 hit. |
InterProi | View protein in InterPro IPR001344. Chloro_AB-bd_pln. IPR022796. Chloroa_b-bind. IPR023329. Chlorophyll_a/b-bd_dom_sf. |
PANTHERi | PTHR21649. PTHR21649. 1 hit. |
Pfami | View protein in Pfam PF00504. Chloroa_b-bind. 1 hit. |
i Sequence
Sequence statusi: Complete.
: The displayed sequence is further processed into a mature form. Sequence processingi
This entry describes 1 produced by isoform ialternative splicing. AlignAdd to basket
Note: A number of isoforms are produced. According to EST sequences.
Isoform 1 (identifier: Q01667-1) [UniParc]FASTAAdd to basket
This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.
10 20 30 40 50
MASNSLMSCG IAAVYPSLLS SSKSKFVSAG VPLPNAGNVG RIRMAAHWMP
60 70 80 90 100
GEPRPAYLDG SAPGDFGFDP LGLGEVPANL ERYKESELIH CRWAMLAVPG
110 120 130 140 150
ILVPEALGYG NWVKAQEWAA LPGGQATYLG NPVPWGTLPT ILAIEFLAIA
160 170 180 190 200
FVEHQRSMEK DPEKKKYPGG AFDPLGYSKD PKKLEELKVK EIKNGRLALL
210 220 230 240
AFVGFCVQQS AYPGTGPLEN LATHLADPWH NNIGDIVIPF N
Experimental Info
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sequence conflicti | 11 | I → K in AAG40043 (PubMed:14593172).Curated | 1 | |
Sequence conflicti | 43 | R → K in AAG40043 (PubMed:14593172).Curated | 1 |
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | M85150 Genomic DNA. Translation: AAA32759.1. X56062 mRNA. Translation: CAA39534.1. AL049655 Genomic DNA. Translation: CAB41095.1. CP002686 Genomic DNA. Translation: AEE79306.1. AF324692 mRNA. Translation: AAG40043.2. AF325016 mRNA. Translation: AAG40368.1. AF326866 mRNA. Translation: AAG41448.1. AF339688 mRNA. Translation: AAK00370.1. AF361847 mRNA. Translation: AAK32859.1. AY070473 mRNA. Translation: AAL49939.1. AY094437 mRNA. Translation: AAM19809.1. BT000852 mRNA. Translation: AAN38689.1. AK317555 mRNA. Translation: BAH20219.1. |
PIRi | S25435. |
RefSeqi | NP_191049.1. NM_115346.4. [Q01667-1] |
UniGenei | At.23982. At.67867. |
Genome annotation databases
EnsemblPlantsi | AT3G54890.1; AT3G54890.1; AT3G54890. [Q01667-1] |
GeneIDi | 824654. |
Gramenei | AT3G54890.1; AT3G54890.1; AT3G54890. [Q01667-1] |
KEGGi | ath:AT3G54890. |
Keywords - Coding sequence diversityi
Alternative splicingSimilar proteinsi
Entry informationi
Entry namei | CAB6_ARATH | |
Accessioni | Q01667Primary (citable) accession number: Q01667 Secondary accession number(s): B9DHK2, Q9C5R7 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | November 30, 2010 |
Last sequence update: | November 1, 1996 | |
Last modified: | February 28, 2018 | |
This is version 133 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Plant Protein Annotation Program |