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P23816 (PH62_CHRSP) Reviewed, UniProtKB/Swiss-Prot

Last modified October 16, 2013. Version 57. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Phycocyanin-645 alpha-2 chain

Short name=PC-645
OrganismChroomonas sp.
Taxonomic identifier3029 [NCBI]
Taxonomic lineageEukaryotaCryptophytaPyrenomonadalesChroomonadaceaeChroomonas

Protein attributes

Sequence length80 AA.
Sequence statusComplete.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

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

Subunit structure

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

Subcellular location

Plastidchloroplast thylakoid membrane; Peripheral membrane protein; Lumenal side.

Post-translational modification

Contains one covalently linked bilin chromophore.

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.

Sequence similarities

Belongs to the phycoerythrin family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 8080Phycocyanin-645 alpha-2 chain
PRO_0000199211

Sites

Binding site181Phycocyanobilin chromophore (covalent; via 1 link) Ref.1

Sequences

Sequence LengthMass (Da)Tools
P23816 [UniParc].

Last modified November 1, 1991. Version 1.
Checksum: AFC7529A3E8D6D56

FASTA808,814
        10         20         30         40         50         60 
KNGDLRAPYV EIFDARGCDA KNSQYTGPKS GDMNDDQCVK VSMAVPKVSE ATAEKKRQEF 

        70         80 
LGFKETAINV PQIAGKTKKY 

« Hide

References

[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.

Cross-references

Sequence databases

PIRS10603.

3D structure databases

ProteinModelPortalP23816.
ModBaseSearch...
MobiDBSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Family and domain databases

Gene3D3.90.510.10. 1 hit.
InterProIPR011070. Globular_prot_asu/bsu.
IPR004228. Phycoerythr_a_core.
[Graphical view]
PfamPF02972. Phycoerythr_ab. 1 hit.
[Graphical view]
ProDomPD019398. Phycoerythr_a/b_core. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SUPFAMSSF56568. SSF56568. 1 hit.
ProtoNetSearch...

Entry information

Entry namePH62_CHRSP
AccessionPrimary (citable) accession number: P23816
Entry history
Integrated into UniProtKB/Swiss-Prot: November 1, 1991
Last sequence update: November 1, 1991
Last modified: October 16, 2013
This is version 57 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)

Relevant documents

SIMILARITY comments

Index of protein domains and families