P30942 (PHE1_RHDS2) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Phycoerythrin alpha-1 chain

Gene names

Name:

cpeA1

Organism

Rhodomonas sp. (strain CS 24) (Chroomonas sp. (strain CS24))

Taxonomic identifier

79257 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Cryptophyta › Pyrenomonadales › Pyrenomonadaceae › Rhodomonas

Protein attributes

Sequence length	44 AA.
Sequence status	Fragment.
Protein existence	Evidence at protein level

General annotation (Comments)

Function	Light-harvesting photosynthetic tetrapyrrole chromophore-protein from the phycobiliprotein complex.
Subunit structure	Heterotetramer of 2 different alpha chains and 2 identical beta chains. The subunit composition could comprise of any combination of 2 out of 4 different alpha units with an invariant beta unit By similarity.
Subcellular location	Plastid › chloroplast thylakoid membrane; Peripheral membrane protein; Lumenal side.
Post-translational modification	Contains one covalently linked 15,16-dihydrobiliverdin chromophore By similarity.
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.

Ontologies

Keywords
Biological process	Electron transport Photosynthesis Transport
Cellular component	Chloroplast Membrane Plastid Thylakoid
Ligand	Bile pigment Chromophore
PTM	Hydroxylation
Technical term	Direct protein sequencing
Gene Ontology (GO)
Biological_process	electron transport chain Inferred from electronic annotation. Source: UniProtKB-KW photosynthesis Inferred from electronic annotation. Source: UniProtKB-KW protein-chromophore linkage Inferred from electronic annotation. Source: UniProtKB-KW
Cellular_component	chloroplast thylakoid membrane Inferred from electronic annotation. Source: UniProtKB-SubCell phycobilisome Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – ›44	›44	Phycoerythrin alpha-1 chain		PRO_0000199209
Regions
	Region	24 – 26	3	15,16-dihydrobiliverdin chromophore By similarity
Sites
	Binding site	19	1	15,16-dihydrobiliverdin chromophore (covalent; via 1 link) By similarity
	Binding site	21	1	15,16-dihydrobiliverdin chromophore By similarity
	Binding site	40	1	15,16-dihydrobiliverdin chromophore By similarity
Amino acid modifications
	Modified residue	4	1	5-hydroxylysine By similarity
Experimental info
	Non-terminal residue	44	1

Sequences

	Sequence		Length	Mass (Da)
	P30942 [UniParc]. Last modified July 1, 1993. Version 1. Checksum: 2EBE2D2EAF47AA7E	FASTA	44	4,723
	10 20 30 40 AMDKSAKAPQ ITIFDHRGCS RAPKSETGGT ATKDDQMMVK VSQV

References

[1]	"A genomic clone encoding a cryptophyte phycoerythrin alpha-subunit. Evidence for three alpha-subunits and an N-terminal membrane transit sequence." Jenkins J., Hiller R.G., Speirs J., Godovac-Zimmermann J. FEBS Lett. 273:191-194(1990) [PubMed] [Europe PMC] [Abstract] Cited for: PROTEIN SEQUENCE.

Cross-references

3D structure databases
ProteinModelPortal	P30942.
SMR	P30942. Positions 1-44.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Family and domain databases
Gene3D	3.90.510.10. 1 hit.
InterPro	IPR011070. Globular_prot_asu/bsu. IPR004228. Phycoerythr_a/b_core. [Graphical view]
Pfam	PF02972. Phycoerythr_ab. 1 hit. [Graphical view]
ProDom	PD019398. Phycoerythr_a/b_core. 1 hit. [Graphical view] [Entries sharing at least one domain]
SUPFAM	SSF56568. AlphaBeta_subunt. 1 hit.
ProtoNet	Search...

Entry information

Entry name

PHE1_RHDS2

Accession

Primary (citable) accession number: P30942

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 1, 1993
Last sequence update:	July 1, 1993
Last modified:	April 3, 2013
This is version 60 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)