Era

• Description: GTP-binding protein, involved in the assembly of the 30S ribosomal subunit
  
  

Gene name	era
Synonyms	bex, yqfH
Essential	yes PubMed
Product	GTP-binding protein
Function	ribosome assembly
MW, pI	33 kDa, 8.376
Gene length, protein length	903 bp, 301 aa
Immediate neighbours	recO, cdd
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: BSU25290

Phenotypes of a mutant

essential PubMed

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Binds and hydrolyzes GTP and readily exchanges GDP for GTP

• Protein family: Era subfamily (according to Swiss-Prot) Era/Obg family

• Paralogous protein(s): Era, Obg, YphC, YsxC, RbgA, YqeH, ThdF, YyaF, YnbA

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• Structure:

• UniProt: P42182

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: cdd-era (according to DBTBS)

• Sigma factor: SigA PubMed, SigB PubMed

• Regulation:

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant:

• Expression vector:
  • for expression/ purification from B. subtilis with N-terminal Strep-tag, for SPINE, in pGP380: pGP837, available in Stülke lab
  • for expression/ purification from E. coli with N-terminal His-tag, in pWH844: pGP845, available in Stülke lab

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Naotake Ogasawara, Nara, Japan

References

Reviews

Robert A Britton
Role of GTPases in bacterial ribosome assembly.
Annu Rev Microbiol: 2009, 63;155-76
[PubMed:19575570] [WorldCat.org] [DOI] (I p)

Original publications

Takuya Morimoto, Pek Chin Loh, Tomohiro Hirai, Kei Asai, Kazuo Kobayashi, Shigeki Moriya, Naotake Ogasawara
Six GTP-binding proteins of the Era/Obg family are essential for cell growth in Bacillus subtilis.
Microbiology (Reading): 2002, 148(Pt 11);3539-3552
[PubMed:12427945] [WorldCat.org] [DOI] (P p)

P Z Wang, R H Doi
Overlapping promoters transcribed by bacillus subtilis sigma 55 and sigma 37 RNA polymerase holoenzymes during growth and stationary phases.
J Biol Chem: 1984, 259(13);8619-25
[PubMed:6330116] [WorldCat.org] (P p)