Easter egg

• Description: inhibitor of AbrB activity
  
  

Gene name	abbA
Synonyms	ykzF
Essential	no
Product	anti-repressor
Function	inhibition of AbrB
MW, pI	7 kDa, 4.642
Gene length, protein length	195 bp, 65 aa
Immediate neighbours	ykuK, ykuL
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: BSU14120

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

Categories containing this gene/protein

transcription factors and their control

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: inhibition of AbrB activity PubMed

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions: AbbA-AbrB PubMed

• Localization:

Database entries

• Structure:

• UniProt: O31697

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: ykuJ-ykuK-abbA-ykuL-ccpC PubMed

• Sigma factor:

• Regulation:
  • repressed by glucose (4.3-fold) (CcpA) PubMed
  • expressed under conditions that trigger sporulation (Spo0A) PubMed

• Regulatory mechanism:
  • CcpA: transcription repression PubMed
  • Spo0A: transcription activation by Spo0A~P PubMed

• Additional information:

Biological materials

• Mutant: GP214 (deletion of ykuJ-ykuK-abbA-ykuL, replaced by aphA3), available in the Stülke lab

• Expression vector:

• lacZ fusion: pGP708 (in pAC5), available in Stülke lab, pGP712 (in pAC6), available in Stülke lab

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Richard Losick, Harvard Univ., Cambridge, USA homepage