DNA processing Smf single strand binding protein; Protein that helps load RecA onto ssDNA during transformation. Binds cooperatively to circular ssDNA, is able to bridge different segments of DNA. Favors the loading of RecA onto SsbA- or SsbB-coated ssDNA and formation of RecA-DNA filaments. RecA-ATP cannot catalyze homologous DNA strand exchange; SsbA and DprA activate strand exchange by RecA-ATP.

Helicase competence protein; Involved in transformation (competence for DNA uptake). Required for DNA uptake but not for binding. May provide the driving force for transport of DNA through an aqueous channel. Belongs to the helicase family.

Membrane bound high-affinity DNA-binding receptor; Needed for both DNA binding and transport. It is absolutely required for the uptake of transforming DNA but not for binding. Its role in binding may be indirect.

Membrane associated ATPase for DNA competence; Required for uptake of DNA by competent cells.

Multifunctional SOS repair factor; Multifunctional protein involved in homologous recombination, DNA repair and competence. Can catalyze the hydrolysis of (d)ATP in the presence of single-stranded DNA; prefers dATP at least in vitro, catalyzes the dATP-dependent uptake of single- stranded DNA by duplex DNA, and the dATP-dependent hybridization of homologous single-stranded DNAs (strand exchange). RecA-ATP cannot catalyze homologous DNA strand exchange; SsbA and DprA activate strand exchange by RecA-ATP. It interacts with LexA causing its activation and leading to its autocatalytic clea [...]

DNA channel for uptake in competent cells; The comE operon is required for the binding and uptake of transforming DNA. ComEC is required for internalization but is dispensable for DNA binding; To H.influenzae REC2, N.gonorrhoeae ComA and E.coli YcaI.

Putative nucleic acid methyltransferase; Evidence 3: Function proposed based on presence of conserved amino acid motif, structural feature or limited homology; Product type pe: putative enzyme; To type I restriction system adenine methylases.

Membrane protease and transmethylase; Cleaves type-4 fimbrial leader sequence and methylates the N- terminal (generally Phe) residue; Belongs to the peptidase A24 family.

Adaptor protein controlling oligomerization of the AAA+ protein ClpC; Enables the recognition and targeting of unfolded and aggregated proteins to the ClpC protease or to other proteins involved in proteolysis. Acts negatively in the development of competence by binding ComK and recruiting it to the ClpCP protease. When overexpressed, inhibits sporulation. Also involved in Spx degradation by ClpC.