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mgtE [2019-08-28 09:19:20]
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mgtE [2019-08-28 09:19:20]

primary magnesium transporter
Locus
BSU_13300
Isoelectric point
4.61
Molecular weight
50.68 kDa
Protein length
451 aa Sequence Blast
Gene length
1356 bp Sequence Blast
Function
magnesium uptake
Product
primary magnesium transporter
Essential
yes
Synonyms
ykoK

Genomic Context

      
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Categories containing this gene/protein

Gene

Coordinates
1,396,013 1,397,368

Phenotypes of a mutant

  • essential PubMed
  • a mgtE mutant has a growth defect on rich media, this can be suppressed by the addition of 25 mM Mg2+, moreover the mutant grows well on minimal medium in the presence of citrate (due to the activity of CitM) PubMed
  • a mgtE yfjQ mutant does not grow on rich media, this can be suppressed by the addition of 25 mM Mg2+, moreover the mutant grows well on minimal medium in the presence of citrate (due to the activity of CitM) PubMed
  • The protein

    Protein family

  • SLC41A transporter family (single member, according to UniProt)
  • Domains

  • 2 CBS domains (140-203, 204-260)
  • Effectors of protein activity

  • binds c-di-AMP PubMed
  • Structure

  • 2YVX (from Thermus thermophilus, 34% identity) PubMed
  • 2QBZ (the mgtE riboswitch)
  • Localization

  • cell membrane (according to UniProt)
  • Expression and Regulation

    Operons

    Genes
    Description

    Regulatory mechanism

  • M-box: termination/antitermination, Mg-responsive MgtE riboswitch, in M-box
  • Regulation

  • induced at low magnesium concentration (M-box) PubMed
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    Additional information

  • expression is increased as a result of loop duplication in L22 PubMed
  • Biological materials

    Mutant

  • MGNA-B313 (mgtE::erm), available at the NBRP B. subtilis, Japan
  • GP2854 (ΔmgtE::ermC), available in Jörg Stülke's lab
  • GP2762 (ΔmgtE::spec), available in Jörg Stülke's lab
  • GP2763 (ΔcitM::kan ΔmgtE::spec), available in Jörg Stülke's lab
  • Expression vectors

  • pGP2927 (N-terminal His-tag, purification from E. coli, in pWH844), available in Jörg Stülke's lab
  • LacZ fusion

  • GP2869 (based on pAC5), available in Jörg Stülke's lab
  • FLAG-tag construct

  • GP2768 mgtE-3xFLAG spc (based on pGP1331), available in Jörg Stülke's lab
  • References

    Reviews

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    Original publications

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