LmrB

• Description: lincomycin-resistance protein (multidrug resistance pump)
  
  

Gene name	lmrB
Synonyms	yccA
Essential	no
Product	lincomycin-resistance protein
Function	resistance to lincomycin
Gene expression levels in SubtiExpress: lmrB
MW, pI	51 kDa, 9.703
Gene length, protein length	1437 bp, 479 aa
Immediate neighbours	ycbU, lmrA
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

transporters/ other, resistance against toxins/ antibiotics, membrane proteins

This gene is a member of the following regulons

LmrA regulon

The gene

Basic information

• Locus tag: BSU02670

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: EmrB family (according to Swiss-Prot)

• Paralogous protein(s): YcnB, YhcA

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:
  • cell membrane (according to Swiss-Prot)

Database entries

• Structure:

• UniProt: O35018

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: lmrA-lmrB PubMed

• Expression browser: lmrB PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • induced by flavonoids such as quercetin (LmrA)PubMed

• Regulatory mechanism:
  • LmrA: transcription repression PubMed

• Additional information:
  • the mRNA is substantially stabilized upon depletion of RNase Y PubMed

Biological materials

• Mutant:
  • GP1701 (lmrB::aphA3), available in Jörg Stülke's lab
  • GP1703 (lmrB::aphA3 ycnB::spc), available in Jörg Stülke's lab
• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Martin Lehnik-Habrink, Marc Schaffer, Ulrike Mäder, Christine Diethmaier, Christina Herzberg, Jörg Stülke
RNA processing in Bacillus subtilis: identification of targets of the essential RNase Y.
Mol Microbiol: 2011, 81(6);1459-73
[PubMed:21815947] [WorldCat.org] [DOI] (I p)

Kazutake Hirooka, Satoshi Kunikane, Hiroshi Matsuoka, Ken-Ichi Yoshida, Kanako Kumamoto, Shigeo Tojo, Yasutaro Fujita
Dual regulation of the Bacillus subtilis regulon comprising the lmrAB and yxaGH operons and yxaF gene by two transcriptional repressors, LmrA and YxaF, in response to flavonoids.
J Bacteriol: 2007, 189(14);5170-82
[PubMed:17483215] [WorldCat.org] [DOI] (P p)

Ken-Ichi Yoshida, Yo-Hei Ohki, Makiko Murata, Masaki Kinehara, Hiroshi Matsuoka, Takenori Satomura, Reiko Ohki, Miyuki Kumano, Kunio Yamane, Yasutaro Fujita
Bacillus subtilis LmrA is a repressor of the lmrAB and yxaGH operons: identification of its binding site and functional analysis of lmrB and yxaGH.
J Bacteriol: 2004, 186(17);5640-8
[PubMed:15317768] [WorldCat.org] [DOI] (P p)

Miyuki Kumano, Masaya Fujita, Kouji Nakamura, Makiko Murata, Reiko Ohki, Kunio Yamane
Lincomycin resistance mutations in two regions immediately downstream of the -10 region of lmr promoter cause overexpression of a putative multidrug efflux pump in Bacillus subtilis mutants.
Antimicrob Agents Chemother: 2003, 47(1);432-5
[PubMed:12499232] [WorldCat.org] [DOI] (P p)