Vibrio cholerae VpsT regulates matrix production and motility by directly sensing cyclic di-GMP.
Microorganisms can switch from a planktonic, free-swimming life-style to a sessile, colonial state, called a biofilm, which confers resistance to environmental stress. Conversion between the motile and biofilm life-styles has been attributed to increased levels of the prokaryotic second messenger cyclic di-guanosine monophosphate (c-di-GMP), yet the signaling mechanisms mediating such a global switch are poorly understood. Here we show that the transcriptional regulator VpsT from Vibrio cholerae directly senses c-di-GMP to inversely control extracellular matrix production and motility, which identifies VpsT as a master regulator for biofilm formation. Rather than being regulated by phosphorylation, VpsT undergoes a change in oligomerization on c-di-GMP binding.
Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
Petya V
PV
Krasteva
Jiunn C N
JC
Fong
Nicholas J
NJ
Shikuma
Sinem
S
Beyhan
Marcos V A S
MV
Navarro
Fitnat H
FH
Yildiz
Holger
H
Sondermann
D020816:Amino Acid Motifs; D001426:Bacterial Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D001665:Binding Sites; D018441:Biofilms / Q000254:growth & development*; D018360:Crystallography, X-Ray; D006152:Cyclic GMP / Q000031:analogs & derivatives* / Q000378:metabolism; D004269:DNA, Bacterial / Q000378:metabolism; D019281:Dimerization; D005109:Extracellular Matrix / Q000378:metabolism*; D020869:Gene Expression Profiling; D015964:Gene Expression Regulation, Bacterial; D008958:Models, Molecular; D009068:Movement; D017354:Point Mutation; D011135:Polysaccharides, Bacterial / Q000235:genetics / Q000378:metabolism; D017510:Protein Folding; D055503:Protein Multimerization; D017434:Protein Structure, Tertiary; D015398:Signal Transduction; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D014158:Transcription, Genetic; D041241:Vibrio cholerae O1 / Q000166:cytology / Q000235:genetics / Q000502:physiology*
D001426:Bacterial Proteins; D004269:DNA, Bacterial; D011135:Polysaccharides, Bacterial; D014157:Transcription Factors; C062025:bis(3',5')-cyclic diguanylic acid; D006152:Cyclic GMP