XylR

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  • Description: transcriptional repressor of the xyl and xyn operons

Gene name xylR
Synonyms
Essential no
Product transcriptional repressor
Function regulation of xylan and xylose utilization
Metabolic function and regulation of this protein in SubtiPathways:
Sugar catabolism
MW, pI 38 kDa, 5.819
Gene length, protein length 1050 bp, 350 aa
Immediate neighbours xynB, xylA
Get the DNA and protein sequences
(Barbe et al., 2009)
Genetic context
XylR context.gif
This image was kindly provided by SubtiList







The gene

Basic information

  • Locus tag: BSU17590

Phenotypes of a mutant

Database entries

  • DBTBS entry: [1]
  • SubtiList entry: [2]

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity: transcription repression of the xylA-xylB and the xynP-xynB operons
  • Protein family: ROK (nagC/xylR) family (according to Swiss-Prot)
  • Paralogous protein(s):

Extended information on the protein

  • Kinetic information:
  • Domains:
  • Modification:
  • Cofactor(s):
  • Effectors of protein activity: inducer: xylose
  • Interactions:
  • Localization:

Database entries

  • Structure:
  • KEGG entry: [3]
  • E.C. number:

Additional information

Expression and regulation

  • Operon: xylR (according to DBTBS)
  • Regulation:
  • Regulatory mechanism:
  • Additional information:

Biological materials

  • Mutant: GP270 (erm), available in the Stülke lab
  • Expression vector:
  • lacZ fusion:
  • GFP fusion:
  • two-hybrid system:
  • Antibody:

Labs working on this gene/protein

Wolfgang Hillen, Erlangen University, Germany Homepage

Your additional remarks

References

M K Dahl, D Schmiedel, W Hillen
Glucose and glucose-6-phosphate interaction with Xyl repressor proteins from Bacillus spp. may contribute to regulation of xylose utilization.
J Bacteriol: 1995, 177(19);5467-72
[PubMed:7559331] [WorldCat.org] [DOI] (P p)

M K Dahl, J Degenkolb, W Hillen
Transcription of the xyl operon is controlled in Bacillus subtilis by tandem overlapping operators spaced by four base-pairs.
J Mol Biol: 1994, 243(3);413-24
[PubMed:7966270] [WorldCat.org] [DOI] (P p)

C Kauder, R Allmansberger, D Gärtner, D Schmiedel, W Hillen
An operator binding-negative mutation of Xyl repressor from Bacillus subtilis is trans dominant in Bacillus megaterium.
FEMS Microbiol Lett: 1993, 109(1);81-4
[PubMed:8319885] [WorldCat.org] [DOI] (P p)

D Gärtner, J Degenkolb, J A Ripperger, R Allmansberger, W Hillen
Regulation of the Bacillus subtilis W23 xylose utilization operon: interaction of the Xyl repressor with the xyl operator and the inducer xylose.
Mol Gen Genet: 1992, 232(3);415-22
[PubMed:1588910] [WorldCat.org] [DOI] (P p)

P Kreuzer, D Gärtner, R Allmansberger, W Hillen
Identification and sequence analysis of the Bacillus subtilis W23 xylR gene and xyl operator.
J Bacteriol: 1989, 171(7);3840-5
[PubMed:2544559] [WorldCat.org] [DOI] (P p)