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Q9SQL2

- CB24_PEA

UniProt

Q9SQL2 - CB24_PEA

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Protein

Chlorophyll a-b binding protein P4, chloroplastic

Gene

lhcA-P4

Organism
Pisum sativum (Garden pea)
Status
Reviewed - 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.1 PublicationCurated
May channel protons produced in the catalytic Mn center of water oxidation into the thylakoid lumen.1 Publication

Cofactori

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 bindingi56 – 561Magnesium (chlorophyll-b 1 axial ligand); via carbonyl oxygenBy similarity
Binding sitei76 – 761Chlorophyll-a 1; via amide nitrogenBy similarity
Metal bindingi95 – 951Magnesium (chlorophyll-a 1 axial ligand)By similarity
Binding sitei100 – 1001Chlorophyll-b 2By similarity
Binding sitei137 – 1371Chlorophyll-b 3By similarity
Metal bindingi143 – 1431Magnesium (chlorophyll-b 2 axial ligand); via carbonyl oxygenBy similarity
Metal bindingi153 – 1531Magnesium (chlorophyll-b 3 axial ligand)By similarity
Binding sitei156 – 1561Chlorophyll-b 4By similarity
Binding sitei203 – 2031Chlorophyll-a 5By similarity
Metal bindingi204 – 2041Magnesium (chlorophyll-a 3 axial ligand)By similarity
Metal bindingi207 – 2071Magnesium (chlorophyll-a 4 axial ligand)By similarity
Binding sitei209 – 2091Chlorophyll-a 1By similarity
Metal bindingi221 – 2211Magnesium (chlorophyll-a 5 axial ligand)By similarity
Metal bindingi236 – 2361Magnesium (chlorophyll-a 6 axial ligand)By similarity

GO - Molecular functioni

  1. chlorophyll binding Source: UniProtKB-KW
  2. metal ion binding Source: UniProtKB-KW

GO - Biological processi

  1. photosynthesis, light harvesting Source: InterPro
  2. protein-chromophore linkage Source: UniProtKB-KW
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 P4, chloroplastic
Alternative name(s):
LHCI type III CAB-P4
Gene namesi
Name:lhcA-P4Imported
OrganismiPisum sativum (Garden pea)
Taxonomic identifieri3888 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsfabidsFabalesFabaceaePapilionoideaeFabeaePisum

Subcellular locationi

GO - Cellular componenti

  1. chloroplast Source: UniProtKB-KW
  2. integral component of membrane Source: UniProtKB-KW
  3. photosystem I Source: UniProtKB-KW
  4. photosystem II Source: UniProtKB-KW
Complete GO annotation...

Keywords - Cellular componenti

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

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini? – 252Chlorophyll a-b binding protein P4, chloroplasticPRO_0000310860
Transit peptidei1 – ?ChloroplastCurated

Post-translational modificationi

Photoregulated by reversible phosphorylation of its threonine residues.By similarity

Keywords - PTMi

Phosphoprotein

Proteomic databases

PRIDEiQ9SQL2.
ProMEXiQ9SQL2.

Expressioni

Inductioni

Down-regulated by UV-B.1 Publication

Interactioni

Subunit structurei

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

Protein-protein interaction databases

DIPiDIP-60296N.

Structurei

Secondary structure

1
252
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Turni88 – 914Combined sources
Helixi92 – 987Combined sources
Helixi100 – 1067Combined sources
Beta strandi113 – 1153Combined sources
Beta strandi131 – 1333Combined sources
Turni141 – 1444Combined sources
Helixi145 – 1506Combined sources
Turni151 – 1533Combined sources
Helixi154 – 1607Combined sources
Beta strandi170 – 1723Combined sources
Beta strandi174 – 1774Combined sources
Helixi180 – 1834Combined sources
Beta strandi188 – 1903Combined sources
Beta strandi196 – 1994Combined sources
Helixi203 – 2097Combined sources
Turni212 – 2143Combined sources
Helixi215 – 2228Combined sources
Beta strandi223 – 2253Combined sources
Turni233 – 2386Combined sources

3D structure databases

Select the link destinations:
PDBe
RCSB PDB
PDBj
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1YO9model-41-252[»]
2O01X-ray3.40485-249[»]
2WSCX-ray3.3041-252[»]
2WSEX-ray3.4941-252[»]
2WSFX-ray3.4841-252[»]
3LW5X-ray3.30481-247[»]
ProteinModelPortaliQ9SQL2.
SMRiQ9SQL2. Positions 85-249.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiQ9SQL2.

Transmembrane

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei101 – 12121HelicalSequence AnalysisAdd
BLAST
Transmembranei134 – 15421HelicalSequence AnalysisAdd
BLAST

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.Curated

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]
SUPFAMiSSF103511. SSF103511. 1 hit.

Sequencei

Sequence statusi: Complete.

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

Q9SQL2-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MATVTTQASA AIFGPCGLKS RFLGGSSGKL NRGVAFRPVG CSPSASFKVE
60 70 80 90 100
AKKGEWLPGL ASPGYLTGSL PGDNGFDPLG LAEDPENLRW FVQAELVNGR
110 120 130 140 150
WAMLGVAGML LPEVFTSIGI INVPKWYAAG KEEYFASSST LFVIEFILSH
160 170 180 190 200
YVEIRRWQDI KNPGSVNQDP IFKQYSLPAG EVGYPGGIFN PLNFAPTLEA
210 220 230 240 250
KEKEIANGRL AMLAFLGFII QHNVTGKGPF DNLLQHISDP WHNTIVQTLG

GN
Length:252
Mass (Da):27,229
Last modified:May 1, 2000 - v1
Checksum:i00B7D26C82F6667A
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sequence conflicti128 – 1281A → D in ABN49455. 1 PublicationCurated
Sequence conflicti149 – 1491S → F in ABN49455. 1 PublicationCurated

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AF002248 mRNA. Translation: AAF13731.1.
EF208907 mRNA. Translation: ABN49455.1.
PIRiT51616.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AF002248 mRNA. Translation: AAF13731.1 .
EF208907 mRNA. Translation: ABN49455.1 .
PIRi T51616.

3D structure databases

Select the link destinations:
PDBe
RCSB PDB
PDBj
Links Updated
Entry Method Resolution (Å) Chain Positions PDBsum
1YO9 model - 4 1-252 [» ]
2O01 X-ray 3.40 4 85-249 [» ]
2WSC X-ray 3.30 4 1-252 [» ]
2WSE X-ray 3.49 4 1-252 [» ]
2WSF X-ray 3.48 4 1-252 [» ]
3LW5 X-ray 3.30 4 81-247 [» ]
ProteinModelPortali Q9SQL2.
SMRi Q9SQL2. Positions 85-249.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

DIPi DIP-60296N.

Proteomic databases

PRIDEi Q9SQL2.
ProMEXi Q9SQL2.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Miscellaneous databases

EvolutionaryTracei Q9SQL2.

Family and domain databases

Gene3Di 1.10.3460.10. 1 hit.
InterProi IPR001344. Chloro_AB-bd_pln.
IPR022796. Chloroa_b-bind.
IPR023329. Chlorophyll_a/b-bd_dom.
[Graphical view ]
PANTHERi PTHR21649. PTHR21649. 1 hit.
Pfami PF00504. Chloroa_b-bind. 1 hit.
[Graphical view ]
SUPFAMi SSF103511. SSF103511. 1 hit.
ProtoNeti Search...

Publicationsi

  1. "Molecular markers for UV-B stress in plants: alteration of the expression of four classes of genes in Pisum sativum and the formation of high molecular mass RNA adducts."
    Brosche M., Fant C., Bergkvist S.W., Strid H., Svensk A., Olsson O., Strid A.
    Biochim. Biophys. Acta 1447:185-198(1999) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA], INDUCTION.
    Strain: cv. Greenfeast1 Publication.
    Tissue: LeafImported.
  2. "Interacting partner of calcineurin B-like interacting protein kinase (CIPK) (partial homolog of photosystem I light harvesting chlorophyll a/b binding protein) from Pisum sativum."
    Gupta S., Tuteja N.
    Submitted (JAN-2007) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 109-252.
  3. "Dicyclohexylcarbodiimide-binding proteins related to the short circuit of the proton-pumping activity of photosystem II. Identified as light-harvesting chlorophyll-a/b-binding proteins."
    Jahns P., Junge W.
    Eur. J. Biochem. 193:731-736(1990) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE OF 110-124, FUNCTION.
    Tissue: Seedling1 Publication.

Entry informationi

Entry nameiCB24_PEA
AccessioniPrimary (citable) accession number: Q9SQL2
Secondary accession number(s): A3F6K3, P35386
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 13, 2007
Last sequence update: May 1, 2000
Last modified: October 29, 2014
This is version 64 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

3D-structure, Direct protein sequencing

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3