Q9F1K9 (PSBK_THEEB) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Photosystem II reaction center protein K
Short name=PSII-K

Gene names

Name:	psbK
Ordered Locus Names:	tsl0176

Organism

Thermosynechococcus elongatus (strain BP-1) [Reference proteome] [HAMAP]

Taxonomic identifier

197221 [NCBI]

Taxonomic lineage

cellular organisms › Bacteria › Cyanobacteria › Oscillatoriophycideae › Chroococcales › Thermosynechococcus › Thermosynechococcus elongatus

Protein attributes

Sequence length	46 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level

General annotation (Comments)

Function	This protein is a component of the reaction center of photosystem II. HAMAP-Rule MF_00441
Subcellular location	Cellular thylakoid membrane; Single-pass membrane protein Ref.3 Ref.4.
Sequence similarities	Belongs to the PsbK family.

Ontologies

Keywords
Biological process	Photosynthesis
Cellular component	Membrane Photosystem II Thylakoid
Domain	Transmembrane Transmembrane helix
Technical term	3D-structure Complete proteome Direct protein sequencing Reference proteome
Gene Ontology (GO)
Biological_process	photosynthesis Inferred from electronic annotation. Source: HAMAP
Cellular_component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW photosystem II reaction center 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

Propeptide

1 – 9

9

HAMAP-Rule MF_00441

PRO_0000029543

Chain

10 – 46

37

Photosystem II reaction center protein K HAMAP-Rule MF_00441

PRO_0000029544

Regions

Transmembrane

25 – 45

21

Helical; Potential

Secondary structure

1

.

.

.

.

.

.

.

.

46

Helix Strand Turn

Details...

Helix

13 – 18

6

Helix

19 – 22

4

Helix

25 – 27

3

Helix

28 – 42

15

Turn

43 – 45

3

Sequences

	Sequence		Length	Mass (Da)
	Q9F1K9 [UniParc]. Last modified March 1, 2001. Version 1. Checksum: 45C5197F4B50E398	FASTA	46	5,026
	10 20 30 40 MIDALVLVAK LPEAYAIFDP LVDVLPVIPV LFLALAFVWQ AAVGFR

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Cloning and disruption of the psbK gene from thermophilic Thermosynechococcus elongatus." Katoh H., Ikeuchi M. Submitted (DEC-2000) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Complete genome structure of the thermophilic cyanobacterium Thermosynechococcus elongatus BP-1." Nakamura Y., Kaneko T., Sato S., Ikeuchi M., Katoh H., Sasamoto S., Watanabe A., Iriguchi M., Kawashima K., Kimura T., Kishida Y., Kiyokawa C., Kohara M., Matsumoto M., Matsuno A., Nakazaki N., Shimpo S., Sugimoto M. , Takeuchi C., Yamada M., Tabata S. DNA Res. 9:123-130(2002) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: BP-1.
[3]	"Ycf12 is a core subunit in the photosystem II complex." Kashino Y., Takahashi T., Inoue-Kashino N., Ban A., Ikeda Y., Satoh K., Sugiura M. Biochim. Biophys. Acta 1767:1269-1275(2007) [PubMed] [Europe PMC] [Abstract] Cited for: PROTEIN SEQUENCE OF 10-24, PROPEPTIDE, SUBCELLULAR LOCATION.
[4]	"Absence of the PsbZ subunit prevents association of PsbK and Ycf12 with the PSII complex in the thermophilic cyanobacterium Thermosynechococcus elongatus BP-1." Iwai M., Suzuki T., Dohmae N., Inoue Y., Ikeuchi M. Plant Cell Physiol. 48:1758-1763(2007) [PubMed] [Europe PMC] [Abstract] Cited for: PROTEIN SEQUENCE OF 10-19, SUBCELLULAR LOCATION.
+	Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ

AB052850 Genomic DNA. Translation: BAB20628.1.
BA000039 Genomic DNA. Translation: BAC07729.1.

RefSeq

NP_680967.1. NC_004113.1.

3D structure databases

PDBe
RCSB PDB
PDBj

Entry	Method	Resolution (Å)	Chain	Positions	PDBsum
1IZL	X-ray	3.70	K/W	10-46	[»]
1S5L	X-ray	3.50	K/k	10-46	[»]
2AXT	X-ray	3.00	K/k	10-46	[»]
3BZ1	X-ray	2.90	K	10-46	[»]
3BZ2	X-ray	2.90	K	10-46	[»]
3KZI	X-ray	3.60	K	10-46	[»]
3PRQ	X-ray	3.20	K	10-46	[»]
3PRR	X-ray	3.20	K	10-46	[»]
4FBY	X-ray	6.56	K/c	10-46	[»]
4IXQ	X-ray	5.70	K/k	1-46	[»]
4IXR	X-ray	5.90	K/k	1-46	[»]

ProteinModelPortal

Q9F1K9.

SMR

Q9F1K9. Positions 10-46.

ModBase

Search...

Protein-protein interaction databases

DIP

DIP-48496N.

STRING

197221.tsl0176.

Proteomic databases

PRIDE

Q9F1K9.

Protocols and materials databases

StructuralBiologyKnowledgebase

Search...

Genome annotation databases

EnsemblBacteria

BAC07729; BAC07729; BAC07729.

GeneID

1010273.

KEGG

tel:tsl0176.

PATRIC

23925544. VBITheElo119873_0182.

Phylogenomic databases

eggNOG

NOG09651.

HOGENOM

HOG000111611.

KO

K02712.

ProtClustDB

PRK02553.

Family and domain databases

HAMAP

MF_00441. PSII_PsbK.

InterPro

IPR003687. PSII_PsbK.
[Graphical view]

Pfam

PF02533. PsbK. 1 hit.
[Graphical view]

ProDom

PD004458. PSII_PsbK. 1 hit.
[Graphical view] [Entries sharing at least one domain]

ProtoNet

Search...

Other

EvolutionaryTrace

Q9F1K9.

Entry information

Entry name

PSBK_THEEB

Accession

Primary (citable) accession number: Q9F1K9

Entry history

Integrated into UniProtKB/Swiss-Prot:	August 29, 2001
Last sequence update:	March 1, 2001
Last modified:	May 1, 2013
This is version 74 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program