B2GCV0 (KHSE_LACF3) 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:	LAF_1146

Organism

Lactobacillus fermentum (strain NBRC 3956 / LMG 18251) [Complete proteome] [HAMAP]

Taxonomic identifier

334390 [NCBI]

Taxonomic lineage

Bacteria › Firmicutes › Lactobacillales › Lactobacillaceae › Lactobacillus

Protein attributes

Sequence length	286 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 – 286	286	Homoserine kinase HAMAP MF_00384		PRO_1000122428
Regions
	Nucleotide binding	78 – 88	11	ATP Potential

Sequences

	Sequence		Length	Mass (Da)
	B2GCV0 [UniParc]. Last modified June 10, 2008. Version 1. Checksum: 76059B9076B0A044	FASTA	286	29,804
	10 20 30 40 50 60 MQIIVPASSA NLGPGFDSIG VALSLLLTVD VLGPATSWQV DHQLADLPHD ESNLIVQTAR 70 80 90 100 110 120 QLVPDLTPHH LAVQSDIPVA HGLGSSSSAI VAGIELANQL GALHLSNEQK VAFACQLEGH 130 140 150 160 170 180 PDNVAPTILG GLVIGTEVNG GFAAVKAPLP PYLFAAYIPA YNVKTKEARA ALPTTLPFKE 190 200 210 220 230 240 AVAASATANT LVAALFTGDY QLVGQLIEQD RFHEQARAHL VPELTQLREL GHRCGALATY 250 260 270 280 LSGAGPTVMT LLKEADFPAF QAAITQAGLP GRLVPLTPHP TGVTVS

References

[1]

"Comparative genome analysis of Lactobacillus reuteri and Lactobacillus fermentum reveal a genomic island for reuterin and cobalamin production." Morita H., Toh H., Fukuda S., Horikawa H., Oshima K., Suzuki T., Murakami M., Hisamatsu S., Kato Y., Takizawa T., Fukuoka H., Yoshimura T., Itoh K., O'Sullivan D.J., McKay L.L., Ohno H., Kikuchi J., Masaoka T., Hattori M. DNA Res. 15:151-161(2008) [PubMed: 18487258] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: NBRC 3956 / LMG 18251.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AP008937 Genomic DNA. Translation: BAG27482.1.
RefSeq	YP_001843962.1. NC_010610.1.
3D structure databases
ProteinModelPortal	B2GCV0.
ModBase	Search...
Protein-protein interaction databases
STRING	B2GCV0.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	6232201.
GenomeReviews	Gene locus LAF_1146 in contig AP008937_GR.
KEGG	lfe:LAF_1146.
PATRIC	22226564. VBILacFer15497_1266.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	HBG646290.
OMA	NNALMST.
ProtClustDB	PRK01212.
Family and domain databases
HAMAP	MF_00384. Homoser_kinase. [Tree]
InterPro	IPR006204. GHMP_kinase. IPR013750. GHMP_kinase_C. 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	PF08544. GHMP_kinases_C. 1 hit. 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_LACF3

Accession

Primary (citable) accession number: B2GCV0

Entry history

Integrated into UniProtKB/Swiss-Prot:	April 14, 2009
Last sequence update:	June 10, 2008
Last modified:	January 25, 2012
This is version 28 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program