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Literature DB >> 11807081

Two "wild-type" variants of Escherichia coli sigma(70): context-dependent effects of the identity of amino acid 149.

Nicole E Baldwin¹, Andrea McCracken, Alicia J Dombroski.

Abstract

The identity of amino acid 149 of Escherichia coli sigma(70) has been reported variably as either arginine or aspartic acid. We show that the behavior of both a region 1.2 deletion and a single-amino-acid substitution at position 122 are greatly affected by the identity of amino acid 149.

Entities: Chemical Gene Species

Mesh：

Substances：

Year: 2002 PMID： 11807081 PMCID： PMC134806 DOI： 10.1128/jb.184.4.1192-1195.2002

Source DB: PubMed Journal: J Bacteriol ISSN： 0021-9193 Impact factor: 3.490

29 in total

1. Two amino acids in an RNA polymerase sigma factor involved in the recognition of adjacent base pairs in the -10 region of a cognate promoter.

Authors: D Daniels; P Zuber; R Losick
Journal: Proc Natl Acad Sci U S A Date: 1990-10 Impact factor: 11.205

2. A mutant sigma 32 with a small deletion in conserved region 3 of sigma has reduced affinity for core RNA polymerase.

Authors: Y N Zhou; W A Walter; C A Gross
Journal: J Bacteriol Date: 1992-08 Impact factor: 3.490

Review 3. The sigma 70 family: sequence conservation and evolutionary relationships.

Authors: M Lonetto; M Gribskov; C A Gross
Journal: J Bacteriol Date: 1992-06 Impact factor: 3.490

4. sigma factor mutations affecting the sequence-selective interaction of RNA polymerase with -10 region single-stranded DNA.

Authors: X Huang; F J Lopez de Saro; J D Helmann
Journal: Nucleic Acids Res Date: 1997-07-01 Impact factor: 16.971

5. Mutagenesis and gene fusion by megaprimer PCR.

Authors: S Barik
Journal: Methods Mol Biol Date: 1997

6. A sigma32 mutant with a single amino acid change in the highly conserved region 2.2 exhibits reduced core RNA polymerase affinity.

Authors: D M Joo; N Ng; R Calendar
Journal: Proc Natl Acad Sci U S A Date: 1997-05-13 Impact factor: 11.205

Two "wild-type" variants of Escherichia coli sigma(70): context-dependent effects of the identity of amino acid 149.

1. Two amino acids in an RNA polymerase sigma factor involved in the recognition of adjacent base pairs in the -10 region of a cognate promoter.

2. A mutant sigma 32 with a small deletion in conserved region 3 of sigma has reduced affinity for core RNA polymerase.

Review 3. The sigma 70 family: sequence conservation and evolutionary relationships.

4. sigma factor mutations affecting the sequence-selective interaction of RNA polymerase with -10 region single-stranded DNA.

5. Mutagenesis and gene fusion by megaprimer PCR.

6. A sigma32 mutant with a single amino acid change in the highly conserved region 2.2 exhibits reduced core RNA polymerase affinity.

Review 7. Structure and function of bacterial sigma factors.

8. A branched pathway in the early stage of transcription by Escherichia coli RNA polymerase.

9. Cascades of Sigma factors.

10. Isolation and characterization of mutations in region 1.2 of Escherichia coli sigma70.

1. Region 4 of Rhizobium etli Primary Sigma Factor (SigA) Confers Transcriptional Laxity in Escherichia coli.