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Protein

Chlorophyll a-b binding protein 3, chloroplastic

Gene

LHCB1.2

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)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi58 – 581Magnesium (chlorophyll-b 1 axial ligand); via carbonyl oxygenBy similarity
Binding sitei80 – 801Chlorophyll-a 1; via amide nitrogenBy similarity
Binding sitei86 – 861Chlorophyll-a 1By similarity
Metal bindingi99 – 991Magnesium (chlorophyll-a 1 axial ligand)By similarity
Metal bindingi102 – 1021Magnesium (chlorophyll-a 2 axial ligand)By similarity
Binding sitei104 – 1041Chlorophyll-b 2By similarity
Binding sitei137 – 1371Chlorophyll-a 3By similarity
Binding sitei147 – 1471Chlorophyll-a 3; via amide nitrogenBy similarity
Metal bindingi153 – 1531Magnesium (chlorophyll-b 2 axial ligand); via carbonyl oxygenBy similarity
Binding sitei157 – 1571Chlorophyll-b 3By similarity
Binding sitei165 – 1651Chlorophyll-b 4 or chlorophyll-b 5By similarity
Metal bindingi173 – 1731Magnesium (chlorophyll-b 3 axial ligand)By similarity
Binding sitei176 – 1761Chlorophyll-b 4By similarity
Binding sitei183 – 1831Chlorophyll-b 2; via amide nitrogenBy similarity
Binding sitei214 – 2141Chlorophyll-a 5By similarity
Metal bindingi215 – 2151Magnesium (chlorophyll-a 3 axial ligand)By similarity
Metal bindingi218 – 2181Magnesium (chlorophyll-a 4 axial ligand)By similarity
Binding sitei220 – 2201Chlorophyll-a 1By similarity
Metal bindingi232 – 2321Magnesium (chlorophyll-a 5 axial ligand)By similarity
Metal bindingi247 – 2471Magnesium (chlorophyll-a 6 axial ligand)By similarity
Binding sitei256 – 2561Chlorophyll-a 6; via amide nitrogenBy similarity
Binding sitei263 – 2631Chlorophyll-b 5; via carbonyl oxygenBy similarity

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 3, chloroplastic
Alternative name(s):
Chlorophyll a-b protein 180
Short name:
CAB-180
LHCII type I CAB-3
Gene namesi
Name:LHCB1.2
Synonyms:AB180, CAB3, LHCP-A
Ordered Locus Names:At1g29910
ORF Names:F1N18.5
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 1

Organism-specific databases

TAIRiAT1G29910.

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei100 – 12021HelicalSequence analysisAdd
BLAST
Transmembranei152 – 17221HelicalSequence analysisAdd
BLAST
Transmembranei221 – 24121HelicalSequence analysisAdd
BLAST

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
  • mitochondrion Source: TAIR
  • photosystem I Source: UniProtKB-KW
  • photosystem II Source: UniProtKB-KW
  • plastoglobule Source: TAIR
  • thylakoid Source: TAIR
Complete GO annotation...

Keywords - Cellular componenti

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

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transit peptidei1 – 3535Chloroplast1 PublicationAdd
BLAST
Chaini36 – 267232Chlorophyll a-b binding protein 3, chloroplasticPRO_0000403938Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei36 – 361N2-acetylarginine1 Publication
Modified residuei38 – 381Phosphothreonine1 Publication

Post-translational modificationi

Photoregulated by reversible phosphorylation of its threonine residues.By similarity

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

PaxDbiQ8VZ87.
PRIDEiQ8VZ87.

PTM databases

iPTMnetiQ8VZ87.

Expressioni

Gene expression databases

ExpressionAtlasiQ8VZ87. baseline and differential.
GenevisibleiQ8VZ87. AT.

Interactioni

Subunit structurei

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

Protein-protein interaction databases

BioGridi25104. 14 interactions.
25105. 10 interactions.
IntActiQ8VZ87. 1 interaction.
STRINGi3702.AT1G29920.1.

Structurei

3D structure databases

ProteinModelPortaliQ8VZ87.
SMRiQ8VZ87. Positions 48-256.
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.
InParanoidiQ8VZ87.
KOiK08912.
OrthoDBiEOG09360I0J.
PhylomeDBiQ8VZ87.

Family and domain databases

Gene3Di1.10.3460.10. 1 hit.
InterProiIPR022796. Chloroa_b-bind.
IPR023329. Chlorophyll_a/b-bd_dom.
[Graphical view]
PfamiPF00504. Chloroa_b-bind. 1 hit.
[Graphical view]
SUPFAMiSSF103511. SSF103511. 1 hit.

Sequencei

Sequence statusi: Complete.

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

Q8VZ87-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAASTMALSS PAFAGKAVNL 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):28,227
Last modified:January 11, 2011 - v2
Checksum:iCEF0664E98F0B0BA
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sequence conflicti181 – 1811G → E in AAM47913 (PubMed:14593172).Curated
Sequence conflicti181 – 1811G → E in AAL38341 (PubMed:14593172).Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X03908 Genomic DNA. Translation: CAA27541.1.
X03908 Genomic DNA. Translation: CAA27542.1.
AC008030 Genomic DNA. Translation: AAG10605.1.
CP002684 Genomic DNA. Translation: AEE31149.1.
AY065165 mRNA. Translation: AAL38341.1.
AY114594 mRNA. Translation: AAM47913.1.
RefSeqiNP_564339.1. NM_102731.2.
NP_564340.1. NM_102732.2.
UniGeneiAt.10812.
At.24351.
At.27031.
At.32199.
At.43708.
At.49175.
At.66422.
At.70617.
At.71449.
At.71528.
At.71547.

Genome annotation databases

EnsemblPlantsiAT1G29910.1; AT1G29910.1; AT1G29910.
AT1G29920.1; AT1G29920.1; AT1G29920.
GeneIDi839869.
839870.
GrameneiAT1G29910.1; AT1G29910.1; AT1G29910.
AT1G29920.1; AT1G29920.1; AT1G29920.
KEGGiath:AT1G29910.
ath:AT1G29920.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X03908 Genomic DNA. Translation: CAA27541.1.
X03908 Genomic DNA. Translation: CAA27542.1.
AC008030 Genomic DNA. Translation: AAG10605.1.
CP002684 Genomic DNA. Translation: AEE31149.1.
AY065165 mRNA. Translation: AAL38341.1.
AY114594 mRNA. Translation: AAM47913.1.
RefSeqiNP_564339.1. NM_102731.2.
NP_564340.1. NM_102732.2.
UniGeneiAt.10812.
At.24351.
At.27031.
At.32199.
At.43708.
At.49175.
At.66422.
At.70617.
At.71449.
At.71528.
At.71547.

3D structure databases

ProteinModelPortaliQ8VZ87.
SMRiQ8VZ87. Positions 48-256.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi25104. 14 interactions.
25105. 10 interactions.
IntActiQ8VZ87. 1 interaction.
STRINGi3702.AT1G29920.1.

PTM databases

iPTMnetiQ8VZ87.

Proteomic databases

PaxDbiQ8VZ87.
PRIDEiQ8VZ87.

Protocols and materials databases

DNASUi839869.
839870.
Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblPlantsiAT1G29910.1; AT1G29910.1; AT1G29910.
AT1G29920.1; AT1G29920.1; AT1G29920.
GeneIDi839869.
839870.
GrameneiAT1G29910.1; AT1G29910.1; AT1G29910.
AT1G29920.1; AT1G29920.1; AT1G29920.
KEGGiath:AT1G29910.
ath:AT1G29920.

Organism-specific databases

TAIRiAT1G29910.

Phylogenomic databases

eggNOGiENOG410IU0X. Eukaryota.
ENOG410ZHBU. LUCA.
InParanoidiQ8VZ87.
KOiK08912.
OrthoDBiEOG09360I0J.
PhylomeDBiQ8VZ87.

Miscellaneous databases

PROiQ8VZ87.

Gene expression databases

ExpressionAtlasiQ8VZ87. baseline and differential.
GenevisibleiQ8VZ87. AT.

Family and domain databases

Gene3Di1.10.3460.10. 1 hit.
InterProiIPR022796. Chloroa_b-bind.
IPR023329. Chlorophyll_a/b-bd_dom.
[Graphical view]
PfamiPF00504. Chloroa_b-bind. 1 hit.
[Graphical view]
SUPFAMiSSF103511. SSF103511. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiCB1B_ARATH
AccessioniPrimary (citable) accession number: Q8VZ87
Secondary accession number(s): P04777, P83754
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 11, 2011
Last sequence update: January 11, 2011
Last modified: September 7, 2016
This is version 77 of the entry and version 2 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.