In Escherichia coli, nine gene products are known to be essential for assembly of the division septum. One of these, FtsL, is a bitopic membrane protein whose precise function is not understood. It has been proposed that FtsL interacts with the DivIC protein Pfam:PF04977 [3], however this interaction may be indirect [4].

1: FtsL, an essential cytoplasmic membrane protein involved in cell division in Escherichia coli. Guzman LM, Barondess JJ, Beckwith J; J Bacteriol 1992;174:7716-7728. PMID:1332942

2: Analysis of the essential cell division gene ftsL of Bacillus subtilis by mutagenesis and heterologous complementation. Sievers J, Errington J; J Bacteriol 2000;182:5572-5579. PMID:10986263

3: The Bacillus subtilis cell division protein FtsL localizes to sites of septation and interacts with DivIC. Sievers J, Errington J; Mol Microbiol 2000;36:846-855. PMID:10844672

4: The Bacillus subtilis cell division proteins FtsL and DivIC are intrinsically unstable and do not interact with one another in the absence of other septasomal components. Robson SA, Michie KA, Mackay JP, Harry E, King GF; Mol Microbiol 2002;44:663-674. PMID:11994149