Publication Date:
2010-05-01
Description:
Bacteria form communities known as biofilms, which disassemble over time. In our studies outlined here, we found that, before biofilm disassembly, Bacillus subtilis produced a factor that prevented biofilm formation and could break down existing biofilms. The factor was shown to be a mixture of D-leucine, D-methionine, D-tyrosine, and D-tryptophan that could act at nanomolar concentrations. D-amino acid treatment caused the release of amyloid fibers that linked cells in the biofilm together. Mutants able to form biofilms in the presence of D-amino acids contained alterations in a protein (YqxM) required for the formation and anchoring of the fibers to the cell. D-amino acids also prevented biofilm formation by Staphylococcus aureus and Pseudomonas aeruginosa. D-amino acids are produced by many bacteria and, thus, may be a widespread signal for biofilm disassembly.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2921573/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2921573/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolodkin-Gal, Ilana -- Romero, Diego -- Cao, Shugeng -- Clardy, Jon -- Kolter, Roberto -- Losick, Richard -- CA24487/CA/NCI NIH HHS/ -- GM086258/GM/NIGMS NIH HHS/ -- GM18546/GM/NIGMS NIH HHS/ -- GM58213/GM/NIGMS NIH HHS/ -- R01 GM018568/GM/NIGMS NIH HHS/ -- R01 GM018568-39/GM/NIGMS NIH HHS/ -- R01 GM058213/GM/NIGMS NIH HHS/ -- R01 GM086258/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Apr 30;328(5978):627-9. doi: 10.1126/science.1188628.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20431016" target="_blank"〉PubMed〈/a〉
Keywords:
Amino Acid Sequence
;
Amino Acids/*metabolism/pharmacology
;
Bacillus subtilis/*physiology
;
Bacterial Proteins/chemistry/metabolism
;
*Biofilms/growth & development
;
Cell Wall
;
Culture Media, Conditioned
;
Genes, Bacterial
;
Leucine/metabolism/pharmacology
;
Methionine/metabolism/pharmacology
;
Molecular Sequence Data
;
Mutation
;
Pseudomonas aeruginosa/physiology
;
Staphylococcus aureus/physiology
;
Stereoisomerism
;
Tryptophan/metabolism/pharmacology
;
Tyrosine/metabolism/pharmacology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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