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  • Description: transcription repressor of the ycnJ gene

Gene name ycnK
Essential no
Product transcription repressor
Function regulation of copper uptake
MW, pI 21 kDa, 7.371
Gene length, protein length 570 bp, 190 aa
Immediate neighbours ycnJ, ycnL
Get the DNA and protein sequences
(Barbe et al., 2009)
Genetic context
YcnK context.gif
This image was kindly provided by SubtiList

Categories containing this gene/protein

trace metal homeostasis (Cu, Zn, Ni, Mn, Mo), transcription factors and their control

This gene is a member of the following regulons

AbrB regulon

The YcnK regulon:

The gene

Basic information

  • Locus tag: BSU03960

Phenotypes of a mutant

elevated expression of ycnJ under conditions of copper excess PubMed

Database entries

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

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity: repression of ycnJ expression PubMed
  • Protein family: DeoR family of transcription factors
  • Paralogous protein(s):

Extended information on the protein

  • Kinetic information:
  • Domains:
  • Modification:
  • Cofactor(s): copper acts as corepressor PubMed
  • Effectors of protein activity:

Database entries

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

Additional information

Expression and regulation

  • Operon: ycnK (according to DBTBS)
  • 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

Mohamed Marahiel, Marburg University, Germany homepage

Your additional remarks


Shashi Chillappagari, Marcus Miethke, Hein Trip, Oscar P Kuipers, Mohamed A Marahiel
Copper acquisition is mediated by YcnJ and regulated by YcnK and CsoR in Bacillus subtilis.
J Bacteriol: 2009, 191(7);2362-70
[PubMed:19168619] [WorldCat.org] [DOI] (I p)

Mélanie A Hamon, Nicola R Stanley, Robert A Britton, Alan D Grossman, Beth A Lazazzera
Identification of AbrB-regulated genes involved in biofilm formation by Bacillus subtilis.
Mol Microbiol: 2004, 52(3);847-60
[PubMed:15101989] [WorldCat.org] [DOI] (P p)