P72705 (YCF4_SYNY3) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Photosystem I assembly protein Ycf4

Gene names

Name:	ycf4
Ordered Locus Names:	sll0226

Organism

Synechocystis sp. (strain PCC 6803 / Kazusa)

Taxonomic identifier

1111708 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Chroococcales › Synechocystis

Protein attributes

Sequence length	188 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Seems to be required for the assembly of the photosystem I complex. HAMAP MF_00437
Subcellular location	Cellular thylakoid membrane; Multi-pass membrane protein By similarity HAMAP MF_00437.
Sequence similarities	Belongs to the Ycf4 family.
Sequence caution	The sequence CAA81793.1 differs from that shown. Reason: Frameshift at position 185.

Ontologies

Keywords
Biological process	Photosynthesis
Cellular component	Membrane Thylakoid
Domain	Transmembrane Transmembrane helix
Technical term	Complete proteome Reference proteome
Gene Ontology (GO)
Biological process	photosynthesis Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW photosystem I Inferred from electronic annotation. Source: InterPro thylakoid membrane Inferred from electronic annotation. Source: UniProtKB-SubCell
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 188	188	Photosystem I assembly protein Ycf4 HAMAP MF_00437		PRO_0000217640
Regions
	Transmembrane	26 – 48	23	Helical; Potential
	Transmembrane	63 – 85	23	Helical; Potential

Sequences

	Sequence		Length	Mass (Da)
	P72705 [UniParc]. Last modified February 1, 1997. Version 1. Checksum: 8A38A54995007983	FASTA	188	20,454
	10 20 30 40 50 60 MGGQTLAESS QVLRQEVLGA RRFSNFFWAG ISTIGGVGFL LAGLSSYFGK NLLIVSDTTG 70 80 90 100 110 120 LQFIPQGVAL LFYGVAGSTV AGYLWLTMAL NVGSGYNEFN KKSGQVTIFR WGFPGKNRRI 130 140 150 160 170 180 ELINKIADVQ AVKAEIKEGV NPKRSLYLKV KQRRDIPLTR AGQPISLSQL ENQGAELARF LGVPLEGL

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Inactivation of a Synechocystis sp strain PCC 6803 gene with homology to conserved chloroplast open reading frame 184 increases the photosystem II-to-photosystem I ratio." Wilde A., Hartel H., Hubschmann T., Hoffman P., Shestakov S.V., Borner T. Plant Cell 7:649-658(1995) [PubMed: 7780311] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Sequence analysis of the genome of the unicellular cyanobacterium Synechocystis sp. strain PCC6803. II. Sequence determination of the entire genome and assignment of potential protein-coding regions." Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y., Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T., Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S. , Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S. DNA Res. 3:109-136(1996) [PubMed: 8905231] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 27184 / PCC 6803 / N-1.

Cross-references

Sequence databases
EMBL GenBank DDBJ	Z27404 Genomic DNA. Translation: CAA81793.1. Frameshift. BA000022 Genomic DNA. Translation: BAA16712.1.
PIR	S74560.
RefSeq	NP_440032.1. NC_000911.1.
3D structure databases
ModBase	Search...
Protein-protein interaction databases
IntAct	P72705. 3 interactions.
STRING	P72705.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	953330.
GenomeReviews	Gene locus sll0226 in contig BA000022_GR.
KEGG	syn:sll0226.
NMPDR	fig|1148.1.peg.133.
PATRIC	23837142. VBISynSp132158_0146.
Phylogenomic databases
eggNOG	NOG06447.
HOGENOM	HBG439339.
OMA	LTRVGQP.
PhylomeDB	P72705.
ProtClustDB	PRK02542.
Enzyme and pathway databases
BioCyc	SSP1148:SLL0226-MONOMER.
Family and domain databases
HAMAP	MF_00437. Ycf4. [Tree]
InterPro	IPR003359. PSI_Ycf4_assembly. [Graphical view]
Pfam	PF02392. Ycf4. 1 hit. [Graphical view]
ProDom	PD003698. PSI_Ycf4. 1 hit. [Graphical view] [Entries sharing at least one domain]
ProtoNet	Search...

Entry information

Entry name

YCF4_SYNY3

Accession

Primary (citable) accession number: P72705
Secondary accession number(s): Q55299

Entry history

Integrated into UniProtKB/Swiss-Prot:	August 29, 2001
Last sequence update:	February 1, 1997
Last modified:	January 25, 2012
This is version 76 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program