Document Detail

Effect of an overproduction of accessory Gvp proteins on gas vesicle formation in Haloferax volcanii.
MedLine Citation:
PMID:  23338749     Owner:  NLM     Status:  Publisher    
Gas vesicle formation in haloarchaea requires the expression of the p-vac region consisting of 14 genes, gvpACNO and gvpDEFGHIJKLM. Expression of gvpFGHIJKLM leads to essential accessory proteins formed in minor amounts. An overexpression of gvpG, gvpH or gvpM in addition to p-vac inhibited gas vesicle formation, whereas large amounts of all other Gvp proteins did not disturb the synthesis. The unbalanced expression and in particular an aggregation of the overproduced Gvp with other accessory Gvp derived from p-vac could be a reason for the inhibition. Western analyses demonstrated that the hydrophobic GvpM (and GvpJ) indeed form multimers. Fluorescent dots of GvpM-GFP were seen in cells in vivo underlining an aggregation of GvpM. In search for proteins neutralizing the inhibitory effect in case of GvpM, p-vac +pGM(ex), +pHM(ex), +pJM(ex), and +pLM(ex) transformants were constructed. The inhibitory effect of GvpM on gas vesicle formation was suppressed by GvpH, GvpJ or GvpL, but not by GvpG. Western analyses demonstrated that pHM(ex) and pJM(ex) transformants contained additional larger protein bands when probed with an antiserum raised against GvpH or GvpJ, implying interactions. The balanced amount of GvpM-GvpH and GvpM-GvpJ appears to be important during gas vesicle genesis.
Stella Tavlaridou; Karin Faist; Kerstin Weitzel; Felicitas Pfeifer
Related Documents :
22956099 - Immunoisolation of protein complexes from xenopus.
23712759 - Application of a kosmotrope-based solubility assay to multiple protein therapeutic clas...
23717519 - Mtorc1 dependent regulation of redd1 protein stability.
23069659 - Ionizing radiation induces a dramatic persistence of p53 protein accumulation and dna d...
23844019 - The cardiac acetyl-lysine proteome.
24556839 - Post-translational modifications of intermediate filament proteins: mechanisms and func...
25465329 - Anhydrobiosis: drying out with sugar.
18098179 - Time-resolved fluorescence spectroscopy and molecular dynamics simulations point out th...
19359049 - Adiponectin in health and disease: evaluation of adiponectin-targeted drug development ...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-22
Journal Detail:
Title:  Extremophiles : life under extreme conditions     Volume:  -     ISSN:  1433-4909     ISO Abbreviation:  Extremophiles     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706854     Medline TA:  Extremophiles     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Mikrobiologie und Archaea, Fachbereich Biologie, Technische Universität Darmstadt, Schnittspahnstrasse 10, 64287, Darmstadt, Germany.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Improving the Odds Through the Collaboration Success Wizard.
Next Document:  Frontotemporal dementia-amyotrophic lateral sclerosis syndrome locus on chromosome 16p12.1-q12.2: ge...