Proteomics

Dataset Information

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Contribution of ShkA dysregulation to the cdG0 phenotype


ABSTRACT: The ShkA-ShpA-TacA phosphorelay regulates stalk biogenesis and G1-S phase transition in Caulobacter crescentus. Histidine kinase activity of ShkA is c-di-GMP dependent and a strain lacking c-di-GMP (cdG0) shows a number of phenotypic aberrations. In this project, we aim at disentangling the contribution of ShkA-ShpA-TacA pathway dysregulation to the cdG0 phenotype by profiling the proteomes of mutants that constitutively activate or deactivate TacA target gene expression.

INSTRUMENT(S): LTQ Orbitrap

ORGANISM(S): Caulobacter Sp. 736

TISSUE(S): Cell Suspension Culture, Permanent Cell Line Cell

SUBMITTER: Alexander Schmidt  

LAB HEAD: Alexander Schmidt

PROVIDER: PXD012739 | Pride | 2019-12-16

REPOSITORIES: Pride

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Publications

Precise timing of transcription by c-di-GMP coordinates cell cycle and morphogenesis in Caulobacter.

Kaczmarczyk Andreas A   Hempel Antje M AM   von Arx Christoph C   Böhm Raphael R   Dubey Badri N BN   Nesper Jutta J   Schirmer Tilman T   Hiller Sebastian S   Jenal Urs U  

Nature communications 20200210 1


Bacteria adapt their growth rate to their metabolic status and environmental conditions by modulating the length of their G1 period. Here we demonstrate that a gradual increase in the concentration of the second messenger c-di-GMP determines precise gene expression during G1/S transition in Caulobacter crescentus. We show that c-di-GMP stimulates the kinase ShkA by binding to its central pseudo-receiver domain, activates the TacA transcription factor, and initiates a G1/S-specific transcription  ...[more]

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