P45836 (KHSE_MYCLE) 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:	ML1131

Organism

Mycobacterium leprae [Complete proteome] [HAMAP]

Taxonomic identifier

1769 [NCBI]

Taxonomic lineage

Bacteria › Actinobacteria › Actinobacteridae › Actinomycetales › Corynebacterineae › Mycobacteriaceae › Mycobacterium

Protein attributes

Sequence length	315 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.
Sequence caution	The sequence AAA63100.1 differs from that shown. Reason: Erroneous initiation.

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 – 315	315	Homoserine kinase HAMAP MF_00384		PRO_0000156588
Regions
	Nucleotide binding	96 – 106	11	ATP Potential

Sequences

	Sequence		Length	Mass (Da)
	P45836 [UniParc]. Last modified April 27, 2001. Version 2. Checksum: 08EA78DE4B17398A	FASTA	315	32,752
	10 20 30 40 50 60 MVTWMLPAGL VASAVVAASS ANLGPGFDSI GLALSLCDEI VVETTDSGLV VVVDGEGADQ 70 80 90 100 110 120 VPMGPEHLVV RAVRRGLQAV GVSAAGLVVR CRNAIPHSRG LGSSAAAVVG GLAVVNGFVA 130 140 150 160 170 180 QIDSTPLSNA QLIQLASEFE GHPDNAAAAV LGGAVVSWVD RSYDQPDYCA VPLRLHPDIH 190 200 210 220 230 240 LFAAIPEERS STAESRVLLP ARVSHDDARF NVSRAALLVV ALTERPDLLM AATEDVLHQP 250 260 270 280 290 300 HRASAMSASA EYLRLLRRHN VAATLSGAGP SLIALSTQSE LPREAAEYGA ANGFIIIKMT 310 AGDEVCWRPE VTVPG

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	Smith D.R., Robison K. Submitted (SEP-1994) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Massive gene decay in the leprosy bacillus." Cole S.T., Eiglmeier K., Parkhill J., James K.D., Thomson N.R., Wheeler P.R., Honore N., Garnier T., Churcher C.M., Harris D.E., Mungall K.L., Basham D., Brown D., Chillingworth T., Connor R., Davies R.M., Devlin K., Duthoy S. , Feltwell T., Fraser A., Hamlin N., Holroyd S., Hornsby T., Jagels K., Lacroix C., Maclean J., Moule S., Murphy L.D., Oliver K., Quail M.A., Rajandream M.A., Rutherford K.M., Rutter S., Seeger K., Simon S., Simmonds M., Skelton J., Squares R., Squares S., Stevens K., Taylor K., Whitehead S., Woodward J.R., Barrell B.G. Nature 409:1007-1011(2001) [PubMed: 11234002] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: TN.

Cross-references

Sequence databases
EMBL GenBank DDBJ	U15186 Genomic DNA. Translation: AAA63100.1. Different initiation. AL583920 Genomic DNA. Translation: CAC31512.1.
PIR	E87050. T09990.
RefSeq	NP_301825.1. NC_002677.1.
3D structure databases
ProteinModelPortal	P45836.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	EBMYCT00000028163; EBMYCP00000027769; EBMYCG00000028158.
GeneID	910225.
GenomeReviews	Gene locus ML1131 in contig AL450380_GR.
KEGG	mle:ML1131.
NMPDR	fig|272631.1.peg.697.
PATRIC	18054217. VBIMycLep78757_2053.
Organism-specific databases
Leproma	ML1131.
CMR	Search...
Phylogenomic databases
GeneTree	EBGT00050000016145.
HOGENOM	HBG646290.
OMA	DRLHQPY.
ProtClustDB	PRK01212.
Enzyme and pathway databases
BioCyc	MLEP272631:ML1131-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_MYCLE

Accession

Primary (citable) accession number: P45836

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 1, 1995
Last sequence update:	April 27, 2001
Last modified:	January 25, 2012
This is version 84 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program