MetI

• Description: O-succinylhomoserine lyase (L-cysteine, H2S, methanethiol, elimination)
  
  

Gene name	metI
Synonyms	yjcI
Essential	no
Product	O-succinylhomoserine lyase (L-cysteine, H2S, methanethiol, elimination)
Function	biosynthesis of methionine
Gene expression levels in SubtiExpress: metI
Metabolic function and regulation of this protein in SubtiPathways: metI
MW, pI	41 kDa, 5.019
Gene length, protein length	1119 bp, 373 aa
Immediate neighbours	yjcH, metC
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

biosynthesis/ acquisition of amino acids

This gene is a member of the following regulons

S-box

The gene

Basic information

• Locus tag: BSU11870

Database entries

• BsubCyc: BSU11870

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• BsubCyc: BSU11870

• Structure:

• UniProt: O31631

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: metI-metC PubMed

• Expression browser: metI PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • repressed by casamino acids PubMed
  • induced by methionine starvation (S-box) PubMed

• Regulatory mechanism: S-box: transcription termination/ antitermination, the S-box riboswitch binds S-adenosylmethionine resulting in termination PubMed

• Additional information:
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 1079 PubMed
  • number of protein molecules per cell (complex medium with amino acids, without glucose): 949 PubMed

Biological materials

• Mutant:
  • 1A941 ( metI::spec), PubMed, available at BGSC

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Ana Gutiérrez-Preciado, Tina M Henkin, Frank J Grundy, Charles Yanofsky, Enrique Merino
Biochemical features and functional implications of the RNA-based T-box regulatory mechanism.
Microbiol Mol Biol Rev: 2009, 73(1);36-61
[PubMed:19258532] [WorldCat.org] [DOI] (I p)

Jerneja Tomsic, Brooke A McDaniel, Frank J Grundy, Tina M Henkin
Natural variability in S-adenosylmethionine (SAM)-dependent riboswitches: S-box elements in bacillus subtilis exhibit differential sensitivity to SAM In vivo and in vitro.
J Bacteriol: 2008, 190(3);823-33
[PubMed:18039762] [WorldCat.org] [DOI] (I p)

Ulrike Mäder, Georg Homuth, Christian Scharf, Knut Büttner, Rüdiger Bode, Michael Hecker
Transcriptome and proteome analysis of Bacillus subtilis gene expression modulated by amino acid availability.
J Bacteriol: 2002, 184(15);4288-95
[PubMed:12107147] [WorldCat.org] [DOI] (P p)

Christine Eymann, Georg Homuth, Christian Scharf, Michael Hecker
Bacillus subtilis functional genomics: global characterization of the stringent response by proteome and transcriptome analysis.
J Bacteriol: 2002, 184(9);2500-20
[PubMed:11948165] [WorldCat.org] [DOI] (P p)

Sandrine Auger, W H Yuen, Antoine Danchin, Isabelle Martin-Verstraete
The metIC operon involved in methionine biosynthesis in Bacillus subtilis is controlled by transcription antitermination.
Microbiology (Reading): 2002, 148(Pt 2);507-518
[PubMed:11832514] [WorldCat.org] [DOI] (P p)

F J Grundy, T M Henkin
The S box regulon: a new global transcription termination control system for methionine and cysteine biosynthesis genes in gram-positive bacteria.
Mol Microbiol: 1998, 30(4);737-49
[PubMed:10094622] [WorldCat.org] [DOI] (P p)