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Protein

Phycocyanin-645 alpha-2 chain

Gene
N/A
Organism
Chroomonas sp.
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

Photosynthetic bile pigment-protein complex with maximum absorption at approximately 697 nanometers.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei18 – 181Phycocyanobilin chromophore (covalent; via 1 link)

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

Bile pigment, Chromophore

Names & Taxonomyi

Protein namesi
Recommended name:
Phycocyanin-645 alpha-2 chain
Short name:
PC-645
OrganismiChroomonas sp.
Taxonomic identifieri3029 [NCBI]
Taxonomic lineageiEukaryotaCryptophytaPyrenomonadalesChroomonadaceaeChroomonas

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Membrane, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 8080Phycocyanin-645 alpha-2 chainPRO_0000199211Add
BLAST

Post-translational modificationi

Contains one covalently linked bilin chromophore.

Interactioni

Subunit structurei

Heterotetramer of one alpha-1, one alpha-2, and two beta chains.

Structurei

3D structure databases

ProteinModelPortaliP23816.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the phycoerythrin family.Curated

Family and domain databases

Gene3Di3.90.510.10. 1 hit.
InterProiIPR011070. Globular_prot_asu/bsu.
IPR004228. Phycoerythr_a.
[Graphical view]
PfamiPF02972. Phycoerythr_ab. 1 hit.
[Graphical view]
ProDomiPD019398. Phycoerythr_a/b_core. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SUPFAMiSSF56568. SSF56568. 1 hit.

Sequencei

Sequence statusi: Complete.

P23816-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
KNGDLRAPYV EIFDARGCDA KNSQYTGPKS GDMNDDQCVK VSMAVPKVSE
60 70 80
ATAEKKRQEF LGFKETAINV PQIAGKTKKY
Length:80
Mass (Da):8,814
Last modified:November 1, 1991 - v1
Checksum:iAFC7529A3E8D6D56
GO

Sequence databases

PIRiS10603.

Cross-referencesi

Sequence databases

PIRiS10603.

3D structure databases

ProteinModelPortaliP23816.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

Gene3Di3.90.510.10. 1 hit.
InterProiIPR011070. Globular_prot_asu/bsu.
IPR004228. Phycoerythr_a.
[Graphical view]
PfamiPF02972. Phycoerythr_ab. 1 hit.
[Graphical view]
ProDomiPD019398. Phycoerythr_a/b_core. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SUPFAMiSSF56568. SSF56568. 1 hit.
ProtoNetiSearch...

Publicationsi

  1. "The complete amino-acid sequence and the phylogenetic origin of phycocyanin-645 from the cryptophytan alga Chroomonas sp."
    Sidler W., Nutt H., Kumpf B., Frank G., Suter F., Brenzel A., Wehrmeyer W., Zuber H.
    Biol. Chem. Hoppe-Seyler 371:537-547(1990) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE.
  2. "Structural studies on cryptomonad biliprotein subunits. Two different alpha-subunits in Chroomonas phycocyanin-645 and Cryptomonas phycoerythrin-545."
    Sidler W., Kumpf B., Suter F., Morisset W., Wehrmeyer W., Zuber H.
    Biol. Chem. Hoppe-Seyler 366:233-244(1985) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE OF 1-69.

Entry informationi

Entry nameiPH62_CHRSP
AccessioniPrimary (citable) accession number: P23816
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 1, 1991
Last sequence update: November 1, 1991
Last modified: January 7, 2015
This is version 60 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)

Miscellaneousi

Miscellaneous

The light-harvesting system in Cryptophytes contains phycobiliprotein complexes. Unusually they are composed of either phycoerythrin (CPE) or phycocyanin (CPC) but never allophycocyanin (APC), with only one type of biliprotein being present in any one species. Unlike cyanobacteria or red algae these proteins are not arranged into higher-order phycobilisome complexes, and they are found in the thylakoid lumen.

Keywords - Technical termi

Direct protein sequencing

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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.