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Protein

Chlorophyll a-b binding protein 1, chloroplastic

Gene

LHCB1.3

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein 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 bindingi58Magnesium (chlorophyll-b 1 axial ligand); via carbonyl oxygenBy similarity1
Binding sitei80Chlorophyll-a 1; via amide nitrogenBy similarity1
Binding sitei86Chlorophyll-a 1By similarity1
Metal bindingi99Magnesium (chlorophyll-a 1 axial ligand)By similarity1
Metal bindingi102Magnesium (chlorophyll-a 2 axial ligand)By similarity1
Binding sitei104Chlorophyll-b 2By similarity1
Binding sitei137Chlorophyll-a 3By similarity1
Binding sitei147Chlorophyll-a 3; via amide nitrogenBy similarity1
Metal bindingi153Magnesium (chlorophyll-b 2 axial ligand); via carbonyl oxygenBy similarity1
Binding sitei157Chlorophyll-b 3By similarity1
Binding sitei165Chlorophyll-b 4 or chlorophyll-b 5By similarity1
Metal bindingi173Magnesium (chlorophyll-b 3 axial ligand)By similarity1
Binding sitei176Chlorophyll-b 4By similarity1
Binding sitei183Chlorophyll-b 2; via amide nitrogenBy similarity1
Binding sitei214Chlorophyll-a 5By similarity1
Metal bindingi215Magnesium (chlorophyll-a 3 axial ligand)By similarity1
Metal bindingi218Magnesium (chlorophyll-a 4 axial ligand)By similarity1
Binding sitei220Chlorophyll-a 1By similarity1
Metal bindingi232Magnesium (chlorophyll-a 5 axial ligand)By similarity1
Metal bindingi247Magnesium (chlorophyll-a 6 axial ligand)By similarity1
Binding sitei256Chlorophyll-a 6; via amide nitrogenBy similarity1
Binding sitei263Chlorophyll-b 5; via carbonyl oxygenBy similarity1

GO - Molecular functioni

  • chlorophyll binding Source: TAIR
  • metal ion binding Source: UniProtKB-KW
  • pigment binding Source: GO_Central

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Photosynthesis

Keywords - Ligandi

Chlorophyll, Chromophore, Magnesium, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Chlorophyll a-b binding protein 1, chloroplastic
Alternative name(s):
Chlorophyll a-b protein 140
Short name:
CAB-140
LHCII type I CAB-1
Gene namesi
Name:LHCB1.3
Synonyms:AB140, CAB1
Ordered Locus Names:At1g29930
ORF Names:F1N18.3
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 1

Organism-specific databases

TAIRiAT1G29930.

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei100 – 120HelicalSequence analysisAdd BLAST21
Transmembranei152 – 172HelicalSequence analysisAdd BLAST21
Transmembranei221 – 241HelicalSequence analysisAdd BLAST21

GO - Cellular componenti

  • chloroplast Source: TAIR
  • chloroplast envelope Source: GO_Central
  • chloroplast thylakoid Source: TAIR
  • chloroplast thylakoid membrane Source: TAIR
  • integral component of membrane Source: UniProtKB-KW
  • photosystem I Source: UniProtKB-KW
  • photosystem II Source: UniProtKB-KW
  • plastoglobule Source: GO_Central
  • thylakoid Source: TAIR
Complete GO annotation...

Keywords - Cellular componenti

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

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transit peptidei1 – 35Chloroplast1 PublicationAdd BLAST35
ChainiPRO_000000364836 – 267Chlorophyll a-b binding protein 1, chloroplasticAdd BLAST232

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei36N2-acetylarginine1 Publication1
Modified residuei38Phosphothreonine1 Publication1

Post-translational modificationi

Photoregulated by reversible phosphorylation of its threonine residues.By similarity

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

PaxDbiP04778.
PRIDEiP04778.

PTM databases

iPTMnetiP04778.

Expressioni

Gene expression databases

GenevisibleiP04778. AT.

Interactioni

Subunit structurei

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

Protein-protein interaction databases

BioGridi25106. 4 interactors.
IntActiP04778. 2 interactors.
STRINGi3702.AT1G29930.1.

Structurei

3D structure databases

ProteinModelPortaliP04778.
SMRiP04778.
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.
InParanoidiP04778.
KOiK08912.
OMAiGPSDSPW.
OrthoDBiEOG09360I0J.
PhylomeDBiP04778.

Family and domain databases

Gene3Di1.10.3460.10. 1 hit.
InterProiIPR001344. Chloro_AB-bd_pln.
IPR022796. Chloroa_b-bind.
IPR023329. Chlorophyll_a/b-bd_dom.
[Graphical view]
PANTHERiPTHR21649. PTHR21649. 1 hit.
PfamiPF00504. Chloroa_b-bind. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

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

P04778-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAASTMALSS PAFAGKAVKL SPAASEVLGS GRVTMRKTVA KPKGPSGSPW
60 70 80 90 100
YGSDRVKYLG PFSGESPSYL TGEFPGDYGW DTAGLSADPE TFARNRELEV
110 120 130 140 150
IHSRWAMLGA LGCVFPELLA RNGVKFGEAV WFKAGSQIFS DGGLDYLGNP
160 170 180 190 200
SLVHAQSILA IWATQVILMG AVEGYRVAGN GPLGEAEDLL YPGGSFDPLG
210 220 230 240 250
LATDPEAFAE LKVKELKNGR LAMFSMFGFF VQAIVTGKGP IENLADHLAD
260
PVNNNAWAFA TNFVPGK
Length:267
Mass (Da):28,241
Last modified:August 13, 1987 - v1
Checksum:iCFA1664E9A80B0BA
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X03909 Genomic DNA. Translation: CAA27543.1.
AC008030 Genomic DNA. Translation: AAG10603.1.
CP002684 Genomic DNA. Translation: AEE31151.1.
AF428359 mRNA. Translation: AAL16289.1.
AY045673 mRNA. Translation: AAK74031.1.
AY050935 mRNA. Translation: AAK93612.1.
AY058180 mRNA. Translation: AAL25594.1.
AY091169 mRNA. Translation: AAM14108.1.
X15221 Genomic DNA. Translation: CAA33290.1.
X15222 Genomic DNA. Translation: CAA33291.1.
Z17799 mRNA. Translation: CAA79075.1.
PIRiA86423.
RefSeqiNP_174286.1. NM_102733.3.
UniGeneiAt.10812.
At.19140.
At.23809.
At.24351.
At.32199.
At.43708.
At.48174.
At.49175.
At.66422.
At.71449.
At.71528.
At.71551.

Genome annotation databases

EnsemblPlantsiAT1G29930.1; AT1G29930.1; AT1G29930.
GeneIDi839871.
GrameneiAT1G29930.1; AT1G29930.1; AT1G29930.
KEGGiath:AT1G29930.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X03909 Genomic DNA. Translation: CAA27543.1.
AC008030 Genomic DNA. Translation: AAG10603.1.
CP002684 Genomic DNA. Translation: AEE31151.1.
AF428359 mRNA. Translation: AAL16289.1.
AY045673 mRNA. Translation: AAK74031.1.
AY050935 mRNA. Translation: AAK93612.1.
AY058180 mRNA. Translation: AAL25594.1.
AY091169 mRNA. Translation: AAM14108.1.
X15221 Genomic DNA. Translation: CAA33290.1.
X15222 Genomic DNA. Translation: CAA33291.1.
Z17799 mRNA. Translation: CAA79075.1.
PIRiA86423.
RefSeqiNP_174286.1. NM_102733.3.
UniGeneiAt.10812.
At.19140.
At.23809.
At.24351.
At.32199.
At.43708.
At.48174.
At.49175.
At.66422.
At.71449.
At.71528.
At.71551.

3D structure databases

ProteinModelPortaliP04778.
SMRiP04778.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi25106. 4 interactors.
IntActiP04778. 2 interactors.
STRINGi3702.AT1G29930.1.

PTM databases

iPTMnetiP04778.

Proteomic databases

PaxDbiP04778.
PRIDEiP04778.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblPlantsiAT1G29930.1; AT1G29930.1; AT1G29930.
GeneIDi839871.
GrameneiAT1G29930.1; AT1G29930.1; AT1G29930.
KEGGiath:AT1G29930.

Organism-specific databases

TAIRiAT1G29930.

Phylogenomic databases

eggNOGiENOG410IU0X. Eukaryota.
ENOG410ZHBU. LUCA.
HOGENOMiHOG000238032.
InParanoidiP04778.
KOiK08912.
OMAiGPSDSPW.
OrthoDBiEOG09360I0J.
PhylomeDBiP04778.

Miscellaneous databases

PROiP04778.

Gene expression databases

GenevisibleiP04778. AT.

Family and domain databases

Gene3Di1.10.3460.10. 1 hit.
InterProiIPR001344. Chloro_AB-bd_pln.
IPR022796. Chloroa_b-bind.
IPR023329. Chlorophyll_a/b-bd_dom.
[Graphical view]
PANTHERiPTHR21649. PTHR21649. 1 hit.
PfamiPF00504. Chloroa_b-bind. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiCB1C_ARATH
AccessioniPrimary (citable) accession number: P04778
Secondary accession number(s): P83754
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 13, 1987
Last sequence update: August 13, 1987
Last modified: November 30, 2016
This is version 156 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.