Biofilm formation

Biofilms are the result of the multicellular lifestyle of B. subtilis. They are characterized by the formation of a matrix polysaccharide (poly-N-acetyl glucosamine as a major polysaccharide PubMed) and an amyloid-like protein, TasA. Correction of sfp, epsC, swrAA, and degQ as well as introduction of rapP from a plasmid present in NCIB3610 results in biofilm formation in B. subtilis 168 PubMed.

Parent categories	4. Lifestyles 4.1. Exponential and early post-exponential lifestyles
Neighbouring categories	4.1.1. Motility and chemotaxis 4.1.2. Swarming 4.1.3. Sliding 4.1.4. Biofilm formation 4.1.5. Genetic competence
Related categories	SinR regulon
Overview on the categories (Excel file) All genes and their categories (Excel file)

Labs working on biofilm formation

• Roberto Grau
• Daniel Kearns
• Roberto Kolter
• Akos T Kovacs
• Oscar Kuipers
• Beth Lazazzera
• Richard Losick
• Eric Raspaud
• Nicola Stanley-Wall
• Jörg Stülke

Key genes and operons involved in biofilm formation

• matrix polysaccharide synthesis PubMed:
  • epsA-epsB-epsC-epsD-epsE-epsF-epsG-epsH-epsI-epsJ-epsK-epsL-epsM-epsN-epsO
  • galE
• amyloid protein synthesis, secretion and assembly
  • tapA-sipW-tasA
• repellent surface layer
  • bslA
• regulation
  • SlrR
  • SlrA
  • SinR
  • SinI
  • KinC
  • KinD
  • Spo0A
  • PtkA
  • TkmA
  • PtpZ
  • DegU
  • DegQ
  • YmdB
  • FtsH
  • Veg
  • MstX
  • YugO

• other proteins required for biofilm formation
  • AmpS
  • FloT
  • LuxS
  • RemA
  • RemB
  • Rny
  • Sfp/1
  • Sfp/2
  • SpeA
  • SpeD
  • SwrAA
  • YisP
  • YlbF
  • YmcA
  • YvcA
  • YwcC
  • YxaB

• other proteins required for efficient pellicle biofilm formation (mutant is out-competed by wild type)
  • Hag
  • FlgE
  • FliF
  • MotA
  • SigD
  • CheA
  • CheY
  • CheD
  • CheV
  • HemAT