dnaX:Expression

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Overview Transcription Translation Turnover Experimental Links References Suggestions

Overview

This is a placeholder for a summary statement on how expression of this gene product is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.
dnaX encodes two gene products from the same gene. A programmed frameshift is needed to generate the gamma subunit[1][2][3].

The amount of gamma is estimated to be about 20 molecules per cell, based on an estimate of 10 dimers[4]. However, while gamma purifies as a dimer, it is present as one subunit in the τ2γδδ'χψ DnaX complex.

Transcription and Transcriptional Regulation

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Transcription unit(s)

dnaX

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Figure courtesy of RegulonDB

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Notes

This is a placeholder for a summary statement about how transcription of this gene is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Translation and Regulation of Translation

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gbrowse_img.php?coord=491296..491336&genome=ecoli&name=MG1655&trackset=Genes_unlabeled+DNA_unlabeled&width=400&.png
This picture shows the sequence around the N-terminus.

Notes

This is a placeholder for a summary statement about how translation of this gene product is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Turnover and Regulation of Turnover

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Notes

This is a placeholder for a summary statement about turnover of this gene product. You can help EcoliWiki by becoming a user and writing/editing this statement.

Experimental

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Mutations Affecting Expression

Allele Name Mutation Phenotype Reference
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Expression Studies

Type Reference Notes

microarray

GenExpDB:b0470 (EcoliWiki Page)

Summary of data for dnaX from multiple microarray studies

microarray

GEO Profiles:b0470 (EcoliWiki Page)

NCBI GEO profiles for dnaX

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Expression Resources

Resource Name Resource Type Description Source Notes

GFP Fusion

Intergenic region (491102..491347) fused to gfpmut2.

OpenBioSystems

GFP fusion described in Zaslaver, et al.
Plate:109-AZ10; Well:C6[5]

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Notes

Accessions Related to dnaX Expression

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Database Accession Notes

EcoCyc (EcoliWiki Page)

EcoCyc:EG10245

EchoBASE (EcoliWiki Page)

EchoBASE:EB0241

EcoliGenExpDB (EcoliWiki Page)

GenExpDB:b0470

EcoGene (EcoliWiki Page)

EcoGene:EG10245

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Notes

Links

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Name URL Comments
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References

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  1. ↑ Tsuchihashi, Z & Kornberg, A (1990) Translational frameshifting generates the gamma subunit of DNA polymerase III holoenzyme. Proc. Natl. Acad. Sci. U.S.A. 87 2516-20 PubMed
  2. ↑ Blinkowa, AL & Walker, JR (1990) Programmed ribosomal frameshifting generates the Escherichia coli DNA polymerase III gamma subunit from within the tau subunit reading frame. Nucleic Acids Res. 18 1725-9 PubMed
  3. ↑ Flower, AM & McHenry, CS (1990) The gamma subunit of DNA polymerase III holoenzyme of Escherichia coli is produced by ribosomal frameshifting. Proc. Natl. Acad. Sci. U.S.A. 87 3713-7 PubMed
  4. ↑ Hübscher, U & Kornberg, A (1980) The dnaZ protein, the gamma subunit of DNA polymerase III holoenzyme of Escherichia coli. J. Biol. Chem. 255 11698-703 PubMed
  5. ↑ Zaslaver, A et al. (2006) A comprehensive library of fluorescent transcriptional reporters for Escherichia coli. Nat. Methods 3 623-8 PubMed


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