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Protein

B-phycoerythrin alpha chain

Gene

cpeA

Organism
Porphyridium purpureum (Red alga) (Porphyridium cruentum)
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.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei82Phycoerythrobilin chromophore 1 (covalent; via 1 link)1
Binding sitei139Phycoerythrobilin chromophore 2 (covalent; via 1 link)1

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

Bile pigment, Chromophore

Names & Taxonomyi

Protein namesi
Recommended name:
B-phycoerythrin alpha chain
Gene namesi
Name:cpeA
Encoded oniPlastid; Chloroplast
OrganismiPorphyridium purpureum (Red alga) (Porphyridium cruentum)
Taxonomic identifieri35688 [NCBI]
Taxonomic lineageiEukaryotaRhodophytaBangiophyceaePorphyridialesPorphyridiaceaePorphyridium

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Membrane, Phycobilisome, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001991761 – 164B-phycoerythrin alpha chainAdd BLAST164

Post-translational modificationi

Contains two covalently linked bilin chromophores.

Interactioni

Subunit structurei

Heteropolymer of 6 alpha, 6 beta and one gamma chain.By similarity

Protein-protein interaction databases

IntActiP11392. 1 interactor.
MINTiMINT-8389565.

Structurei

Secondary structure

1164
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi4 – 15Combined sources12
Helixi21 – 62Combined sources42
Helixi64 – 67Combined sources4
Helixi76 – 99Combined sources24
Helixi103 – 108Combined sources6
Turni109 – 112Combined sources4
Helixi113 – 119Combined sources7
Helixi124 – 137Combined sources14
Turni140 – 143Combined sources4
Helixi146 – 162Combined sources17

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
3V57X-ray1.70A/C1-164[»]
3V58X-ray1.85A/C1-164[»]
ProteinModelPortaliP11392.
SMRiP11392.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the phycobiliprotein family.Curated

Family and domain databases

Gene3Di1.10.490.20. 1 hit.
InterProiIPR009050. Globin-like.
IPR012128. Phycobilisome_asu/bsu.
[Graphical view]
PfamiPF00502. Phycobilisome. 1 hit.
[Graphical view]
PIRSFiPIRSF000081. Phycocyanin. 1 hit.
SUPFAMiSSF46458. SSF46458. 1 hit.

Sequencei

Sequence statusi: Complete.

P11392-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKSVITTVVS AADAAGRFPS NSDLESIQGN IQRSAARLEA AEKLAGNHEA
60 70 80 90 100
VVKEAGDACF AKYAYLKNPG EAGENQEKIN KCYRDVDHYM RLVNYDLVVG
110 120 130 140 150
GTGPLDEWGI AGAREVYRTL NLPTSAYVAS IAYTRDRLCV PRDMSAQAGV
160
EFSAYLDYLI NALS
Length:164
Mass (Da):17,817
Last modified:July 1, 1989 - v1
Checksum:iA704CE21D52B8D7E
GO

Sequence databases

PIRiS02817.

Cross-referencesi

Sequence databases

PIRiS02817.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
3V57X-ray1.70A/C1-164[»]
3V58X-ray1.85A/C1-164[»]
ProteinModelPortaliP11392.
SMRiP11392.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

IntActiP11392. 1 interactor.
MINTiMINT-8389565.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

Gene3Di1.10.490.20. 1 hit.
InterProiIPR009050. Globin-like.
IPR012128. Phycobilisome_asu/bsu.
[Graphical view]
PfamiPF00502. Phycobilisome. 1 hit.
[Graphical view]
PIRSFiPIRSF000081. Phycocyanin. 1 hit.
SUPFAMiSSF46458. SSF46458. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiPHEA_PORPP
AccessioniPrimary (citable) accession number: P11392
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 1, 1989
Last sequence update: July 1, 1989
Last modified: November 2, 2016
This is version 82 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)

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

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 one 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.