XylR

• 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
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 This image was kindly provided by SubtiList

The gene

Basic information

• Locus tag:

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

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:

• Swiss prot entry: P94490

• KEGG entry: BSU17590

• E.C. number:

Expression and regulation

• Operon: xylR

• Sigma factor:

• Regulation:

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Wolfgang Hillen, Erlangen University, Germany Homepage

References

1. Dahl, M. K., Schmiedel, D., and Hillen, W. (1995) Glucose and glucose-6-phosphate interaction with Xyl repressor proteins from Bacillus spp. may contribute to regulation of xylose utilization. J Bacteriol 177: 5467-5472. PubMed
2. Kauder C, Allmansberger R, Gärtner D, Schmiedel D, Hillen W. 1993. An operator binding-negative mutation of Xyl repressor from Bacillus subtilis is trans dominant in Bacillus megaterium. FEMS Microbiol. Lett. 109:81-84. PubMed
3. Kreuzer P, Gärtner D, Allmansberger R, Hillen W. 1989. Identification and sequence analysis of the Bacillus subtilis W23 xylR gene and xyl operator. J. Bacteriol. 171:3840-3845. PubMed
4. Gärtner D, Degenkolb J, Ripperger JAE, Allmansberger R, Hillen W. 1992. Regulation of the Bacillus subtilis W23 xylose utilization operon: interaction of Xyl repressor with xyl operator and the inducer xylose. Mol. Gen. Genet. 232:415-422 PubMed
5. Author1, Author2 & Author3 (year) Title Journal volume: page-page. PubMed