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Protein

Chlorophyll a-b binding protein, chloroplastic

Gene

LHC0

Organism
Apium graveolens (Celery)
Status
Reviewed-Annotation score: Annotation score: 4 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 bindingi56Magnesium (chlorophyll-b 1 axial ligand); via carbonyl oxygenBy similarity1
Binding sitei78Chlorophyll-a 1; via amide nitrogenBy similarity1
Binding sitei84Chlorophyll-a 1By similarity1
Metal bindingi97Magnesium (chlorophyll-a 1 axial ligand)By similarity1
Metal bindingi100Magnesium (chlorophyll-a 2 axial ligand)By similarity1
Binding sitei102Chlorophyll-b 2By similarity1
Binding sitei135Chlorophyll-a 3By similarity1
Binding sitei145Chlorophyll-a 3; via amide nitrogenBy similarity1
Metal bindingi151Magnesium (chlorophyll-b 2 axial ligand); via carbonyl oxygenBy similarity1
Binding sitei155Chlorophyll-b 3By similarity1
Binding sitei163Chlorophyll-b 4 or chlorophyll-b 5By similarity1
Metal bindingi171Magnesium (chlorophyll-b 3 axial ligand)By similarity1
Binding sitei174Chlorophyll-b 4By similarity1
Binding sitei180Chlorophyll-b 2; via amide nitrogenBy similarity1
Binding sitei211Chlorophyll-a 5By similarity1
Metal bindingi212Magnesium (chlorophyll-a 3 axial ligand)By similarity1
Metal bindingi215Magnesium (chlorophyll-a 4 axial ligand)By similarity1
Binding sitei217Chlorophyll-a 1By similarity1
Metal bindingi229Magnesium (chlorophyll-a 5 axial ligand)By similarity1
Metal bindingi244Magnesium (chlorophyll-a 6 axial ligand)By similarity1
Binding sitei253Chlorophyll-a 6; via amide nitrogenBy similarity1
Binding sitei260Chlorophyll-b 5; via carbonyl oxygenBy similarity1

GO - Molecular functioni

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, chloroplastic
Alternative name(s):
Allergen: Api g 3
Gene namesi
Name:LHC0
OrganismiApium graveolens (Celery)
Taxonomic identifieri4045 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridscampanulidsApialesApiaceaeApioideaeapioid supercladeApieaeApium

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei98 – 118HelicalSequence analysisAdd BLAST21
Transmembranei150 – 170HelicalSequence analysisAdd BLAST21
Transmembranei218 – 238HelicalSequence analysisAdd BLAST21

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

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

Pathology & Biotechi

Allergenic propertiesi

Causes an allergic reaction in human.

Keywords - Diseasei

Allergen

Protein family/group databases

Allergomei3086. Api g 3.0101.
774. Api g 3.

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transit peptidei1 – 35ChloroplastSequence analysisAdd BLAST35
ChainiPRO_000000364636 – 264Chlorophyll a-b binding protein, chloroplasticAdd BLAST229

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei36N2-acetylarginineBy similarity1
Modified residuei38PhosphothreonineBy similarity1

Post-translational modificationi

Photoregulated by reversible phosphorylation of its threonine residues.By similarity

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

PRIDEiP92919.

Interactioni

Subunit structurei

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

Structurei

3D structure databases

ProteinModelPortaliP92919.
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

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.

P92919-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAASTMALSS PALAGKAVKV APSSSELFGN GRVSMRKTVK APVSDSPWYG
60 70 80 90 100
PDRVKYLGPF SGEAPSYLTG EFPGDYGWDT AGLSADPETF AKNRELEVIH
110 120 130 140 150
SRWAMLGALG CVFPELLARN GVKFGEAVWF KAGSQIFSEG GLDYLGNPSL
160 170 180 190 200
VHAQSILSIW ATQVILMGAV EGYRVAGGPL GEIVDPLYPG GSFDPLGLAE
210 220 230 240 250
DPERSAELKV KELKNGRLAM FSMFGFFVQA IVTGKGPLEN LADHLADPVN
260
NNAWAFATNF VPGK
Length:264
Mass (Da):28,076
Last modified:May 1, 1997 - v1
Checksum:i07126C7D5D86BA66
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z75663 mRNA. Translation: CAA99993.1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z75663 mRNA. Translation: CAA99993.1.

3D structure databases

ProteinModelPortaliP92919.
ModBaseiSearch...
MobiDBiSearch...

Protein family/group databases

Allergomei3086. Api g 3.0101.
774. Api g 3.

Proteomic databases

PRIDEiP92919.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

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 nameiCB23_APIGR
AccessioniPrimary (citable) accession number: P92919
Entry historyi
Integrated into UniProtKB/Swiss-Prot: June 20, 2001
Last sequence update: May 1, 1997
Last modified: October 5, 2016
This is version 83 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Documents

  1. Allergens
    Nomenclature of allergens and list of entries
  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.