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Protein

Phycocyanin-645 alpha-2 chain

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

Functioni

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

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.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei18Phycocyanobilin chromophore (covalent; via 1 link)1

GO - Biological processi

Keywordsi

Biological processElectron transport, Photosynthesis, Transport
LigandBile 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

Keywords - Cellular componenti

Chloroplast, Membrane, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001992111 – 80Phycocyanin-645 alpha-2 chainAdd BLAST80

Post-translational modificationi

Contains one covalently linked bilin chromophore.

Proteomic databases

PRIDEiP23816

Interactioni

Subunit structurei

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

Structurei

3D structure databases

ProteinModelPortaliP23816
SMRiP23816
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the phycoerythrin family.Curated

Family and domain databases

Gene3Di3.90.510.10, 1 hit
InterProiView protein in InterPro
IPR011070 Globular_prot_asu/bsu
IPR037011 Phycoerythr-like_a_sf
IPR004228 Phycoerythr_a
PfamiView protein in Pfam
PF02972 Phycoerythr_ab, 1 hit
ProDomiView protein in ProDom or Entries sharing at least one domain
PD019398 Phycoerythr_a/b_core, 1 hit
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

Entry informationi

Entry nameiPH62_CHRSP
AccessioniPrimary (citable) accession number: P23816
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 1, 1991
Last sequence update: November 1, 1991
Last modified: May 23, 2018
This is version 63 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)

Miscellaneousi

Keywords - Technical termi

Direct protein sequencing

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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