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Protein

Homoserine kinase

Gene

thrB

Organism
Chlorobium phaeovibrioides (strain DSM 265 / 1930) (Prosthecochloris vibrioformis (strain DSM 265))
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Protein inferred from homologyi

Functioni

Catalyzes the ATP-dependent phosphorylation of L-homoserine to L-homoserine phosphate.UniRule annotation

Catalytic activityi

ATP + L-homoserine = ADP + O-phospho-L-homoserine.UniRule annotation

Pathwayi: L-threonine biosynthesis

This protein is involved in step 4 of the subpathway that synthesizes L-threonine from L-aspartate.UniRule annotation
Proteins known to be involved in the 5 steps of the subpathway in this organism are:
  1. Aspartokinase (Cvib_1702)
  2. Aspartate-semialdehyde dehydrogenase (asd)
  3. no protein annotated in this organism
  4. Homoserine kinase (thrB)
  5. no protein annotated in this organism
This subpathway is part of the pathway L-threonine biosynthesis, which is itself part of Amino-acid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-threonine from L-aspartate, the pathway L-threonine biosynthesis and in Amino-acid biosynthesis.

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi100 – 110ATPUniRule annotationAdd BLAST11

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Kinase, Transferase

Keywords - Biological processi

Amino-acid biosynthesis, Threonine biosynthesis

Keywords - Ligandi

ATP-binding, Nucleotide-binding

Enzyme and pathway databases

UniPathwayiUPA00050; UER00064.

Names & Taxonomyi

Protein namesi
Recommended name:
Homoserine kinaseUniRule annotation (EC:2.7.1.39UniRule annotation)
Short name:
HKUniRule annotation
Short name:
HSKUniRule annotation
Gene namesi
Name:thrBUniRule annotation
Ordered Locus Names:Cvib_1629
OrganismiChlorobium phaeovibrioides (strain DSM 265 / 1930) (Prosthecochloris vibrioformis (strain DSM 265))
Taxonomic identifieri290318 [NCBI]
Taxonomic lineageiBacteriaChlorobiChlorobiaChlorobialesChlorobiaceaeChlorobium/Pelodictyon groupChlorobium
Proteomesi
  • UP000006700 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10000801261 – 320Homoserine kinaseAdd BLAST320

Interactioni

Protein-protein interaction databases

STRINGi290318.Cvib_1629.

Structurei

3D structure databases

ProteinModelPortaliA4SGN0.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the GHMP kinase family. Homoserine kinase subfamily.UniRule annotation

Phylogenomic databases

eggNOGiENOG4107RDY. Bacteria.
COG0083. LUCA.
HOGENOMiHOG000247197.
KOiK00872.
OMAiVVEPCRA.
OrthoDBiPOG091H020X.

Family and domain databases

Gene3Di3.30.230.10. 1 hit.
3.30.70.890. 1 hit.
HAMAPiMF_00384. Homoser_kinase. 1 hit.
InterProiIPR013750. GHMP_kinase_C_dom.
IPR006204. GHMP_kinase_N_dom.
IPR006203. GHMP_knse_ATP-bd_CS.
IPR000870. Homoserine_kinase.
IPR020568. Ribosomal_S5_D2-typ_fold.
IPR014721. Ribosomal_S5_D2-typ_fold_subgr.
[Graphical view]
PfamiPF08544. GHMP_kinases_C. 1 hit.
PF00288. GHMP_kinases_N. 1 hit.
[Graphical view]
PIRSFiPIRSF000676. Homoser_kin. 1 hit.
SUPFAMiSSF54211. SSF54211. 1 hit.
SSF55060. SSF55060. 1 hit.
TIGRFAMsiTIGR00191. thrB. 1 hit.
PROSITEiPS00627. GHMP_KINASES_ATP. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

A4SGN0-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKSVRGFASA TVGNVACGFD ILGFAITEPG DEVILTRSER KHTGCPVTIS
60 70 80 90 100
SISGDGGKLP LDPRKNTSSF VVLKFLEHIR THKGQDCTGH ISLELKKHLP
110 120 130 140 150
LSSGMGSSAA SAAAALAAAN ELLGRPCTKM ELVHFAIEGE RVACGSAHAD
160 170 180 190 200
NAAPAILGNF VLIRSYTPLD LIVIPPPEKL FCSLVHPHTE LRTSFARSVL
210 220 230 240 250
PTDITLKDAT RQWGNVGALV AGLLTSDYAL VGRSLVDVVA EPKRAPLIPG
260 270 280 290 300
FAEVKEAALN AGALGCSIAG SGPSIFAFSD SAETAHAAGE AMQKAFLASK
310 320
KSLKSDMWVS PICREGARIL
Length:320
Mass (Da):33,507
Last modified:May 15, 2007 - v1
Checksum:iCBA5FE0AE4580079
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000607 Genomic DNA. Translation: ABP37639.1.
RefSeqiWP_011890862.1. NC_009337.1.

Genome annotation databases

EnsemblBacteriaiABP37639; ABP37639; Cvib_1629.
KEGGipvi:Cvib_1629.
PATRICi21397794. VBIChlPha132153_1714.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000607 Genomic DNA. Translation: ABP37639.1.
RefSeqiWP_011890862.1. NC_009337.1.

3D structure databases

ProteinModelPortaliA4SGN0.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi290318.Cvib_1629.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABP37639; ABP37639; Cvib_1629.
KEGGipvi:Cvib_1629.
PATRICi21397794. VBIChlPha132153_1714.

Phylogenomic databases

eggNOGiENOG4107RDY. Bacteria.
COG0083. LUCA.
HOGENOMiHOG000247197.
KOiK00872.
OMAiVVEPCRA.
OrthoDBiPOG091H020X.

Enzyme and pathway databases

UniPathwayiUPA00050; UER00064.

Family and domain databases

Gene3Di3.30.230.10. 1 hit.
3.30.70.890. 1 hit.
HAMAPiMF_00384. Homoser_kinase. 1 hit.
InterProiIPR013750. GHMP_kinase_C_dom.
IPR006204. GHMP_kinase_N_dom.
IPR006203. GHMP_knse_ATP-bd_CS.
IPR000870. Homoserine_kinase.
IPR020568. Ribosomal_S5_D2-typ_fold.
IPR014721. Ribosomal_S5_D2-typ_fold_subgr.
[Graphical view]
PfamiPF08544. GHMP_kinases_C. 1 hit.
PF00288. GHMP_kinases_N. 1 hit.
[Graphical view]
PIRSFiPIRSF000676. Homoser_kin. 1 hit.
SUPFAMiSSF54211. SSF54211. 1 hit.
SSF55060. SSF55060. 1 hit.
TIGRFAMsiTIGR00191. thrB. 1 hit.
PROSITEiPS00627. GHMP_KINASES_ATP. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiKHSE_CHLPM
AccessioniPrimary (citable) accession number: A4SGN0
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 20, 2008
Last sequence update: May 15, 2007
Last modified: November 2, 2016
This is version 69 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.