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Protein

Allophycocyanin beta chain

Gene

apcB

Organism
Synechocystis sp. (strain PCC 6803 / Kazusa)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex. Allophycocyanin has a maximum absorption at approximately 650 nanometers.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei81 – 811Phycocyanobilin chromophore (covalent; via 1 link)By similarity

GO - Biological processi

  1. oxidation-reduction process Source: UniProtKB-KW
  2. photosynthesis Source: UniProtKB-KW
  3. protein-chromophore linkage Source: UniProtKB-KW
Complete GO annotation...

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

Bile pigment, Chromophore

Names & Taxonomyi

Protein namesi
Recommended name:
Allophycocyanin beta chain
Gene namesi
Name:apcB
Ordered Locus Names:slr1986
OrganismiSynechocystis sp. (strain PCC 6803 / Kazusa)
Taxonomic identifieri1111708 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaOscillatoriophycideaeChroococcalesSynechocystis
ProteomesiUP000001425 Componenti: Chromosome

Subcellular locationi

  1. Cellular thylakoid membrane By similarity; Peripheral membrane protein By similarity; Cytoplasmic side By similarity

  2. Note: Forms the core of the phycobilisome.By similarity

GO - Cellular componenti

  1. phycobilisome Source: UniProtKB-KW
Complete GO annotation...

Keywords - Cellular componenti

Membrane, Phycobilisome, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 161161Allophycocyanin beta chainPRO_0000199105Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei71 – 711N4-methylasparagineBy similarity

Post-translational modificationi

Contains one covalently linked phycocyanobilin chromophore.By similarity

Keywords - PTMi

Methylation

Proteomic databases

PaxDbiQ01952.

Interactioni

Subunit structurei

Heterodimer of an alpha and a beta chain.By similarity

Protein-protein interaction databases

IntActiQ01952. 2 interactions.
STRINGi1148.slr1986.

Structurei

Secondary structure

1
161
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Helixi4 – 1310Combined sources
Turni14 – 163Combined sources
Helixi21 – 3212Combined sources
Helixi34 – 5926Combined sources
Turni60 – 623Combined sources
Helixi64 – 663Combined sources
Helixi75 – 9824Combined sources
Helixi102 – 1076Combined sources
Helixi112 – 1198Combined sources
Helixi123 – 14119Combined sources
Helixi143 – 16018Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
4PO5X-ray1.75B/D/F1-161[»]
ProteinModelPortaliQ01952.
SMRiQ01952. Positions 1-161.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the phycobiliprotein family.Curated

Phylogenomic databases

eggNOGiNOG11282.
HOGENOMiHOG000233274.
InParanoidiQ01952.
KOiK02093.
OMAiEMGVYLD.
OrthoDBiEOG6M3PFP.
PhylomeDBiQ01952.

Family and domain databases

Gene3Di1.10.490.20. 1 hit.
InterProiIPR006245. ApcB.
IPR009050. Globin-like.
IPR012128. Phycobilisome_asu/bsu.
[Graphical view]
PfamiPF00502. Phycobilisome. 1 hit.
[Graphical view]
PIRSFiPIRSF000081. Phycocyanin. 1 hit.
SUPFAMiSSF46458. SSF46458. 1 hit.
TIGRFAMsiTIGR01337. apcB. 1 hit.

Sequencei

Sequence statusi: Complete.

Q01952-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQDAITAVIN SADVQGKYLD GAAMDKLKSY FASGELRVRA ASVISANAAT
60 70 80 90 100
IVKEAVAKSL LYSDVTRPGG NMYTTRRYAA CIRDLDYYLR YATYAMLAGD
110 120 130 140 150
ASILDERVLN GLKETYNSLG VPISSTVQAI QAIKEVTASL VGADAGKEMG
160
VYLDYICSGL S
Length:161
Mass (Da):17,216
Last modified:April 1, 1993 - v1
Checksum:i63F01E5903BA1B83
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M77135 Genomic DNA. Translation: AAA27277.1.
BA000022 Genomic DNA. Translation: BAA17875.1.
PIRiB44462.
RefSeqiNP_441195.1. NC_000911.1.
YP_005651252.1. NC_017277.1.
YP_007451077.1. NC_020286.1.

Genome annotation databases

EnsemblBacteriaiBAA17875; BAA17875; BAA17875.
KEGGisyn:slr1986.
PATRICi23839713. VBISynSp132158_1418.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M77135 Genomic DNA. Translation: AAA27277.1.
BA000022 Genomic DNA. Translation: BAA17875.1.
PIRiB44462.
RefSeqiNP_441195.1. NC_000911.1.
YP_005651252.1. NC_017277.1.
YP_007451077.1. NC_020286.1.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
4PO5X-ray1.75B/D/F1-161[»]
ProteinModelPortaliQ01952.
SMRiQ01952. Positions 1-161.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

IntActiQ01952. 2 interactions.
STRINGi1148.slr1986.

Proteomic databases

PaxDbiQ01952.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAA17875; BAA17875; BAA17875.
KEGGisyn:slr1986.
PATRICi23839713. VBISynSp132158_1418.

Phylogenomic databases

eggNOGiNOG11282.
HOGENOMiHOG000233274.
InParanoidiQ01952.
KOiK02093.
OMAiEMGVYLD.
OrthoDBiEOG6M3PFP.
PhylomeDBiQ01952.

Family and domain databases

Gene3Di1.10.490.20. 1 hit.
InterProiIPR006245. ApcB.
IPR009050. Globin-like.
IPR012128. Phycobilisome_asu/bsu.
[Graphical view]
PfamiPF00502. Phycobilisome. 1 hit.
[Graphical view]
PIRSFiPIRSF000081. Phycocyanin. 1 hit.
SUPFAMiSSF46458. SSF46458. 1 hit.
TIGRFAMsiTIGR01337. apcB. 1 hit.
ProtoNetiSearch...

Publicationsi

« Hide 'large scale' publications
  1. "Excitation energy transfer from phycocyanin to chlorophyll in an apcA-defective mutant of Synechocystis sp. PCC 6803."
    Su X., Goodman P., Bogorad L.
    J. Biol. Chem. 267:22944-22950(1992) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
  2. "Sequence analysis of the genome of the unicellular cyanobacterium Synechocystis sp. strain PCC6803. II. Sequence determination of the entire genome and assignment of potential protein-coding regions."
    Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y., Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T., Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.
    , Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S.
    DNA Res. 3:109-136(1996) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: PCC 6803 / Kazusa.
  3. "Towards a proteome project of cyanobacterium Synechocystis sp. strain PCC6803: linking 130 protein spots with their respective genes."
    Sazuka T., Ohara O.
    Electrophoresis 18:1252-1258(1997) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE OF 1-20.

Entry informationi

Entry nameiPHAB_SYNY3
AccessioniPrimary (citable) accession number: Q01952
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 1, 1993
Last sequence update: April 1, 1993
Last modified: April 1, 2015
This is version 104 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
  3. Synechocystis PCC 6803
    Synechocystis (strain PCC 6803): entries and gene names

External Data

Dasty 3

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 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.