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Protein

Chlorophyll a-b binding protein 1, chloroplastic

Gene

CAB1R

Organism
Oryza sativa subsp. japonica (Rice)
Status
Reviewed-Annotation score: -Experimental evidence at transcript leveli

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.

Cofactori

Note: Binds at least 14 chlorophylls (8 Chl-a and 6 Chl-b) and carotenoids such as lutein and neoxanthin.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi57Magnesium (chlorophyll-b 1 axial ligand); via carbonyl oxygenBy similarity1
Binding sitei79Chlorophyll-a 1; via amide nitrogenBy similarity1
Binding sitei85Chlorophyll-a 1By similarity1
Metal bindingi98Magnesium (chlorophyll-a 1 axial ligand)By similarity1
Metal bindingi101Magnesium (chlorophyll-a 2 axial ligand)By similarity1
Binding sitei103Chlorophyll-b 2By similarity1
Binding sitei136Chlorophyll-a 3By similarity1
Binding sitei146Chlorophyll-a 3; via amide nitrogenBy similarity1
Metal bindingi152Magnesium (chlorophyll-b 2 axial ligand); via carbonyl oxygenBy similarity1
Binding sitei156Chlorophyll-b 3By similarity1
Binding sitei164Chlorophyll-b 4 or chlorophyll-b 5By similarity1
Metal bindingi172Magnesium (chlorophyll-b 3 axial ligand)By similarity1
Binding sitei175Chlorophyll-b 4By similarity1
Binding sitei181Chlorophyll-b 2; via amide nitrogenBy similarity1
Binding sitei212Chlorophyll-a 5By similarity1
Metal bindingi213Magnesium (chlorophyll-a 3 axial ligand)By similarity1
Metal bindingi216Magnesium (chlorophyll-a 4 axial ligand)By similarity1
Binding sitei218Chlorophyll-a 1By similarity1
Metal bindingi230Magnesium (chlorophyll-a 5 axial ligand)By similarity1
Metal bindingi245Magnesium (chlorophyll-a 6 axial ligand)By similarity1
Binding sitei254Chlorophyll-a 6; via amide nitrogenBy similarity1
Binding sitei261Chlorophyll-b 5; via carbonyl oxygenBy similarity1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Biological processPhotosynthesis
LigandChlorophyll, Chromophore, Magnesium, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Chlorophyll a-b binding protein 1, chloroplastic
Alternative name(s):
LHCII type I CAB-1
Short name:
LHCP
Gene namesi
Name:CAB1R
Ordered Locus Names:Os09g0346500, LOC_Os09g17740
ORF Names:OSJNBb0085I16.35, P0512H04.4
OrganismiOryza sativa subsp. japonica (Rice)
Taxonomic identifieri39947 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaeBOP cladeOryzoideaeOryzeaeOryzinaeOryzaOryza sativa
Proteomesi
  • UP000059680 Componenti: Chromosome 9

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Chloroplast Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertion Graphics by Christian Stolte; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei99 – 119HelicalSequence analysisAdd BLAST21
Transmembranei151 – 171HelicalSequence analysisAdd BLAST21
Transmembranei180 – 200HelicalSequence analysisAdd BLAST21
Transmembranei219 – 239HelicalSequence analysisAdd BLAST21

Keywords - Cellular componenti

Chloroplast, Membrane, Photosystem I, Photosystem II, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transit peptidei1 – 32ChloroplastCuratedAdd BLAST32
ChainiPRO_000000367733 – 265Chlorophyll a-b binding protein 1, chloroplasticAdd BLAST233

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei33N2-acetylarginineBy similarity1
Modified residuei35PhosphothreonineBy similarity1

Post-translational modificationi

Photoregulated by reversible phosphorylation of its threonine residues.By similarity

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

PaxDbiP12330
PRIDEiP12330

Interactioni

Subunit structurei

The LHC complex consists of chlorophyll a-b binding proteins.

Protein-protein interaction databases

BioGridi815840, 1 interactor
STRINGi39947.LOC_Os09g17740.1

Structurei

3D structure databases

ProteinModelPortaliP12330
SMRiP12330
ModBaseiSearch...
MobiDBiSearch...

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

Keywords - Domaini

Transit peptide, Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG410IU0X Eukaryota
ENOG410ZHBU LUCA
HOGENOMiHOG000238032
InParanoidiP12330
KOiK08912
OMAiSLEASWM
OrthoDBiEOG09360I0J

Family and domain databases

Gene3Di1.10.3460.10, 1 hit
InterProiView protein in InterPro
IPR001344 Chloro_AB-bd_pln
IPR022796 Chloroa_b-bind
IPR023329 Chlorophyll_a/b-bd_dom_sf
PANTHERiPTHR21649 PTHR21649, 1 hit
PfamiView protein in Pfam
PF00504 Chloroa_b-bind, 1 hit

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P12330-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAAATMALSS PVMARAAPST SSALFGEARI TMRKTAAKPK PAASSGSPWY
60 70 80 90 100
GADRVLYLGP LSGEPPSYLT GEFPGDYGWD TAGLSADPET FAKNRELEVI
110 120 130 140 150
HSRWAMLGAL GCVFPELLAR NGVKFGEAVW FKAGSQIFSE GGLDYLGNPS
160 170 180 190 200
LIHAQSILAI WAVQVVLMGA VEGYRIAGGP LGEVVDPLYP GGAFDPLGLA
210 220 230 240 250
DDPEAFAELK VKEIKNGRLA MFSMFGFFVQ AIVTGKGPLE NLADHLADPV
260
NNNAWAYATN FVPGK
Length:265
Mass (Da):28,014
Last modified:November 22, 2005 - v2
Checksum:iA585AAEAF64E76AB
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti63G → GR in CAA32108 (PubMed:2649869).Curated1
Sequence conflicti99V → L in BAA00536 (Ref. 2) Curated1
Sequence conflicti206F → C in CAA32108 (PubMed:2649869).Curated1
Sequence conflicti213E → K in CAA32108 (PubMed:2649869).Curated1
Sequence conflicti216N → K in BAA00536 (Ref. 2) Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X13908 Genomic DNA Translation: CAA32108.1
D00641 mRNA Translation: BAA00536.1
AP005313 Genomic DNA Translation: BAD28469.1
AP005700 Genomic DNA Translation: BAD29115.1
AP008215 Genomic DNA Translation: BAF24853.1
AP014965 Genomic DNA Translation: BAT07611.1
AK060851 mRNA Translation: BAG87574.1
AK104281 mRNA Translation: BAG96567.1
AK104288 mRNA Translation: BAG96573.1
AK104350 mRNA Translation: BAG96613.1
PIRiA44956
S03705
RefSeqiXP_015611833.1, XM_015756347.1
UniGeneiOs.7941

Genome annotation databases

EnsemblPlantsiOs09t0346500-04; Os09t0346500-04; Os09g0346500
GeneIDi4346803
GrameneiOs09t0346500-04; Os09t0346500-04; Os09g0346500
KEGGiosa:4346803

Similar proteinsi

Entry informationi

Entry nameiCB21_ORYSJ
AccessioniPrimary (citable) accession number: P12330
Secondary accession number(s): Q0J2G2, Q6EQF5
Entry historyiIntegrated into UniProtKB/Swiss-Prot: October 1, 1989
Last sequence update: November 22, 2005
Last modified: May 23, 2018
This is version 131 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Oryza sativa (rice)
    Index of Oryza sativa entries and their corresponding gene designations
  2. SIMILARITY comments
    Index of protein domains and families

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