nusA [2017-07-27 11:43:15]

transcription termination factor of RNA polymerase

locus: BSU16600

pI: 4.58

mw: 41.57 kDa

protein length: 371 aa

gene length: 1113 bp

function: transcription

product: transcription termination factor

essential: yes

synonyms

Genomic Context

categories

• [category|SW 3|Information processing] → [category|SW 3.2|RNA synthesis and degradation] → [category|SW 3.2.1|Transcription] → [category|SW 3.2.1.3|Transcription elongation/ termination]
• [category|SW 6|Groups of genes] → [category|SW 6.1|Essential genes]

Gene

Coordinates: 1,732,281 → 1,733,396

Phenotypes of a mutant

• essential [Pubmed|12682299]

The protein

Catalyzed reaction/ biological activity

• stimulates [SW|transcription] termination at weak intrinsic terminators [http://www.nature.com/articles/nmicrobiol20157 Reference]

Protein family

• nusA family (according to Swiss-Prot)

Structure

• [PDB|1HH2] (from ''Thermotoga maritima'', 51% identity) [Pubmed|11430821]

Expression and Regulation

Operons

• genes: [gene|9F6C447900410BF64409E5C41A11C76968DADAFA|ylxS]-[gene|8887ADC77C43F21CD375BDAA4D38E940786DAD4F|nusA]-[gene|F4097349A563503468A2A14F062AEAC532C7917A|ylxR]-[gene|7BFA65857F69855DBB3BB64D93B4ED2F09DC705B|rplGA]-[gene|378B77412D0DEA220A97DEC246410509D9B74D46|infB]-[gene|24835CE6CD2E1F183DB9121F29A63101718B5DF9|ylxP]-[gene|B3119A40393A288EF34FC3E9839B6E40AC6A6EA0|rbfA]
  description: [Pubmed|8491709]

  sigma factors

  • [protein|360F48D576DE950DF79C1A2677B7A35A8D8CC30C|SigA]: sigma factor, [Pubmed|8491709], in [regulon|360F48D576DE950DF79C1A2677B7A35A8D8CC30C|SigA regulon]
  • [protein|580011DE5DC40EC9E7E0512791D328FAA010DCB8|SigB]: sigma factor, [Pubmed|15805528,26577401], in [regulon|580011DE5DC40EC9E7E0512791D328FAA010DCB8|SigB regulon]

  regulatory mechanism

  • [regulon|stringent response|stringent response]: negative regulation, in [regulon|stringent response|stringent response]
  • [protein|8887ADC77C43F21CD375BDAA4D38E940786DAD4F|NusA]: attenuation, [protein|8887ADC77C43F21CD375BDAA4D38E940786DAD4F|NusA] stimulates termination [Reference|http://www.nature.com/articles/nmicrobiol20157], in [regulon|8887ADC77C43F21CD375BDAA4D38E940786DAD4F|NusA regulon]

  regulation

  • autoregulation [SW|NusA] [http://www.nature.com/articles/nmicrobiol20157 reference]
  • induced by glucose [pubmed|30355672]

Biological materials

two-hybrid system

• B. pertussis adenylate cyclase-based bacterial two hybrid system ([SW|BACTH]), available in [SW|Fabian Commichau]'s lab

References

Reviews

• 26132790

Original publications

• not in PubMed: [http://www.nature.com/articles/nmicrobiol20157 Mondal et al., 2016, Nature Microbiology]
• 11948165,8491709,19680289,12161562,10027981,15978071,20817769,11430821