A1VXL7 (KHSE_CAMJJ) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Homoserine kinase
Short name=HK
Short name=HSK
EC=2.7.1.39

Gene names

Name:	thrB
Ordered Locus Names:	CJJ81176_0169

Organism

Campylobacter jejuni subsp. jejuni serotype O:23/36 (strain 81-176) [Complete proteome] [HAMAP]

Taxonomic identifier

354242 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Epsilonproteobacteria › Campylobacterales › Campylobacteraceae › Campylobacter

Protein attributes

Sequence length	292 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Catalyzes the ATP-dependent phosphorylation of L-homoserine to L-homoserine phosphate By similarity. HAMAP MF_00384
Catalytic activity	ATP + L-homoserine = ADP + O-phospho-L-homoserine. HAMAP MF_00384
Pathway	Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine from L-aspartate: step 4/5. HAMAP MF_00384
Subcellular location	Cytoplasm Potential HAMAP MF_00384.
Sequence similarities	Belongs to the GHMP kinase family. Homoserine kinase subfamily.

Ontologies

Keywords
Biological process	Amino-acid biosynthesis Threonine biosynthesis
Cellular component	Cytoplasm
Ligand	ATP-binding Nucleotide-binding
Molecular function	Kinase Transferase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	threonine biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	ATP binding Inferred from electronic annotation. Source: UniProtKB-KW homoserine kinase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 292	292	Homoserine kinase HAMAP MF_00384		PRO_1000049117
Regions
	Nucleotide binding	84 – 94	11	ATP Potential

Sequences

	Sequence		Length	Mass (Da)
	A1VXL7 [UniParc]. Last modified February 6, 2007. Version 1. Checksum: F971FC1175173280	FASTA	292	32,555
	10 20 30 40 50 60 MKILVPATSA NLGPGFDCLG LSLKLFNETQ IQKSGVFSIS IGGEGSDNIF LKKNNIFVNI 70 80 90 100 110 120 FYEIYEKLSG KKDNFRFIFQ NNIPLSRGLG SSSAVIVGAI ASAYYMSGFK VEKERILDEA 130 140 150 160 170 180 LIYENHPDNI APATLGGFVC SLVEKNKVYS IKKEIDKDLA AVVVIPNLAM STEQSRQALA 190 200 210 220 230 240 KNLSFNDAVF NLSHASFLTA CFLEKKYEFL KFASQDKLHE INRMKNLPEL FEVQKFALEN 250 260 270 280 290 KALMSTLSGS GSSFFSLAFK DDALALAKKI QTKFKDFRVQ YLEFDDNGFE IC

References

[1]	Fouts D.E., Nelson K.E., Sebastian Y. Submitted (DEC-2006) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: 81-176.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000538 Genomic DNA. Translation: EAQ73367.1.
RefSeq	YP_999858.1. NC_008787.1.
3D structure databases
ProteinModelPortal	A1VXL7.
ModBase	Search...
Protein-protein interaction databases
STRING	A1VXL7.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	4682508.
GenomeReviews	Gene locus CJJ81176_0169 in contig CP000538_GR.
KEGG	cjj:CJJ81176_0169.
PATRIC	20050293. VBICamJej103413_0191.
TIGR	CJJ81176_0169.
Phylogenomic databases
eggNOG	COG0083.
HOGENOM	HBG646290.
OMA	NNALMST.
PhylomeDB	A1VXL7.
ProtClustDB	PRK01212.
Enzyme and pathway databases
BioCyc	CJEJ354242:CJJ81176_0169-MONOMER.
Family and domain databases
HAMAP	MF_00384. Homoser_kinase. [Tree]
InterPro	IPR006204. GHMP_kinase. IPR006203. GHMP_knse_ATP-bd_CS. IPR000870. Homoserine_kinase. IPR020568. Ribosomal_S5_D2-typ_fold. IPR014721. Ribosomal_S5_D2-typ_fold_subgr. [Graphical view]
Gene3D	G3DSA:3.30.230.10. Ribosomal_S5_D2-type_fold. 1 hit.
KO	K00872.
Pfam	PF00288. GHMP_kinases_N. 1 hit. [Graphical view]
PIRSF	PIRSF000676. Homoser_kin. 1 hit.
PRINTS	PR00958. HOMSERKINASE.
SUPFAM	SSF54211. Ribosomal_S5_D2-typ_fold. 1 hit.
TIGRFAMs	TIGR00191. ThrB. 1 hit.
PROSITE	PS00627. GHMP_KINASES_ATP. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

KHSE_CAMJJ

Accession

Primary (citable) accession number: A1VXL7

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 15, 2008
Last sequence update:	February 6, 2007
Last modified:	December 14, 2011
This is version 39 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program