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tsr methyl-accepting chemotaxis protein Tsr [ Escherichia coli str. K-12 substr. MG1655 ]

Gene ID: 948884, updated on 30-Jul-2025
Official Symbol
tsr
Official Full Name
methyl-accepting chemotaxis protein Tsr
Primary source
ECOCYC:EG11034
Locus tag
b4355
See related
ASAP:ABE-0014282
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Escherichia coli str. K-12 substr. MG1655 (strain: K-12, substrain: MG1655)
Lineage
Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria; Enterobacterales; Enterobacteriaceae; Escherichia
Also known as
cheD; ECK4345
Summary
Tsr also senses energy levels and is involved in aerotaxis, redox taxis and glycerol repellent taxis. [More information is available at EcoGene: EG11034]. Tsr is a serine chemoreceptor in Escherichia coli and binds directly to the MCP periplasmic domain. [More information is available at EcoCyc: EG11034].
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Sequence:
NC_000913.3 (4591657..4593312)

NC_000913.3Genomic Context describing neighboring genes Neighboring gene PF04328 family protein YjiX Neighboring gene pyruvate:H(+) symporter Neighboring gene galactonate:H(+) symporter Neighboring gene putative DNA-binding transcriptional regulator LgoR

Genomic Sequence:
NC_000913.3

Go to nucleotide: Graphics FASTA GenBank

Related articles in PubMed

  1. Role of a small cytoplasmic domain in the establishment of serine chemoreceptor membrane topology. Kimbrough TG, et al. J Bacteriol, 1994 Nov. PMID 7961482, Free PMC Article
  2. Structure of the serine chemoreceptor in Escherichia coli. Boyd A, et al. Nature, 1983 Feb 17-23. PMID 6402709
  3. Genetic and biochemical properties of Escherichia coli mutants with defects in serine chemotaxis. Hedblom ML, et al. J Bacteriol, 1980 Dec. PMID 6777365, Free PMC Article
  4. Novel mutations affecting a signaling component for chemotaxis of Escherichia coli. Parkinson JS. J Bacteriol, 1980 Jun. PMID 6991496, Free PMC Article
  5. Universal architecture of bacterial chemoreceptor arrays. Briegel A, et al. Proc Natl Acad Sci U S A, 2009 Oct 6. PMID 19805102, Free PMC Article

See all (119) citations in PubMed

GeneRIFs: Gene References Into Functions

What's a GeneRIF?
  1. Structural signatures of Escherichia coli chemoreceptor signaling states revealed by cellular crosslinking.
    Title: Structural signatures of Escherichia coli chemoreceptor signaling states revealed by cellular crosslinking.
  2. The authors show that individual Tsr dimers within a trimer exhibit asymmetric flexibilities that are a function of the signaling state, highlighting the effect of their different protein interactions at the receptor tips.
    Title: In Situ Conformational Changes of the Escherichia coli Serine Chemoreceptor in Different Signaling States.
  3. Blue light is a universal signal for Escherichia coli chemoreceptors.
    Title: Blue Light Is a Universal Signal for Escherichia coli Chemoreceptors.
  4. this study shows that Tsr interacts with IL-8 provoking E. coli transmigration across human lung epithelial cells
    Title: Tsr Chemoreceptor Interacts With IL-8 Provoking E. coli Transmigration Across Human Lung Epithelial Cells.
  5. results indicate that, rather than being essential for proper receptor-receptor interaction, the "glycine hinge" residues are involved in the ability of the receptor to switch between different signaling states. Mainly, the C-helix residue G439 has a key role in shifting the equilibrium toward a kinase-activating conformation.
    Title: Mutational Replacements at the "Glycine Hinge" of the Escherichia coli Chemoreceptor Tsr Support a Signaling Role for the C-Helix Residue.
  6. These results indicate that the E402 and R404 residues of Tsr play their most critical signaling roles at their inner locations near the trimer axis where they likely participate in stabilizing the trimer-of-dimer packing and the kinase-ON state of core signaling complexes.
    Title: Signaling Consequences of Structural Lesions that Alter the Stability of Chemoreceptor Trimers of Dimers.
  7. The authors suggest that the Tsr control cable transmits input signals to a four-helix HAMP bundle by modulating the intensity of structural clashes between out-of-register transmembrane helix and AS1 helix of HAMP.
    Title: Evidence for a Helix-Clutch Mechanism of Transmembrane Signaling in a Bacterial Chemoreceptor.
  8. Only strains that produce TynA and FeaB converting norepinephrine to 3,4-dihydroxymandelic acid xhibited chemotaxis toward norepinephrine and 3,4-dihydroxymandelic acid is sensed by the serine chemoreceptor Tsr.
    Title: Chemotaxis of Escherichia coli to norepinephrine (NE) requires conversion of NE to 3,4-dihydroxymandelic acid.
  9. Phe396 governs conformational changes of tsr.
    Title: A phenylalanine rotameric switch for signal-state control in bacterial chemoreceptors.
  10. Co-overexpression of Tsr, CheA, and CheW yields hexagonal Arrays.
    Title: New insights into bacterial chemoreceptor array structure and assembly from electron cryotomography.
Submit: New GeneRIF Correction See all GeneRIFs (31)
Products Interactant Other Gene Complex Source Pubs Description

Homology

Gene Ontology Provided by EcoCyc

Function Evidence Code Pubs
enables identical protein binding IPI
Inferred from Physical Interaction
more info
 PubMed 
enables protein binding IPI
Inferred from Physical Interaction
more info
 PubMed 
enables transmembrane signaling receptor activity IBA
Inferred from Biological aspect of Ancestor
more info
  
enables transmembrane signaling receptor activity IEA
Inferred from Electronic Annotation
more info
  
Process Evidence Code Pubs
involved_in cell motility IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in cellular response to amino acid stimulus IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in chemotaxis IBA
Inferred from Biological aspect of Ancestor
more info
  
involved_in chemotaxis IEA
Inferred from Electronic Annotation
more info
  
involved_in chemotaxis IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in detection of chemical stimulus IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in regulation of bacterial-type flagellum-dependent cell motility IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in signal transduction IEA
Inferred from Electronic Annotation
more info
  
involved_in signal transduction IMP
Inferred from Mutant Phenotype
more info
 PubMed 
Component Evidence Code Pubs
located_in membrane IEA
Inferred from Electronic Annotation
more info
  
part_of methyl accepting chemotaxis protein complex IMP
Inferred from Mutant Phenotype
more info
 PubMed 
is_active_in plasma membrane IBA
Inferred from Biological aspect of Ancestor
more info
  
located_in plasma membrane IEA
Inferred from Electronic Annotation
more info
  
located_in plasma membrane IMP
Inferred from Mutant Phenotype
more info
 PubMed 
Preferred Names
methyl-accepting chemotaxis protein Tsr

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Genome Annotation

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference assembly

Genomic

  1. NC_000913.3 Reference assembly

    Range
    4591657..4593312
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NP_418775.1 methyl-accepting chemotaxis protein Tsr

    See identical proteins and their annotated locations for NP_418775.1

    Status: REVIEWED

    UniProtKB/TrEMBL
    A0A8S7EFF2
    Conserved Domains (1) summary
    PRK15041
    Location:1 → 551
    PRK15041; methyl-accepting chemotaxis protein
Nucleotide Protein
Heading Accession and Version

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