Identification of a region responsible for binding to the cell wall within the S-layer protein of Clostridium thermocellum Lemaire, Marc and Miras, Isabelle and Gounon, Pierre and Béguin, Pierre,, 144, 211-217 (1998), doi = https://doi.org/10.1099/00221287-144-1-211, publicationName = Microbiology Society, issn = 1350-0872, abstract= Summary: The protomer forming the S-layer of Clostridium thermocellum was identified as a 140 kDa protein which was non-covalently bound to the cell wall. Cloning and sequencing of the corresponding gene revealed an open reading frame of 3108 nucleotides encoding a polypeptide of 1036 amino acids, termed SIpA. The amino acid composition of SIpA matches the composition of a previously described exocellular glycoprotein. SIpA shared extensive similarity with the S-layer protein of Bacillus sphaericus and with the outer wall protein of Bacillus brevis. In addition, the amino-terminal region of SIpA contained a segment presenting similarities with segments termed SLH (S-layer homologous), which are found in several bacterial exoproteins. A polypeptide of 209 residues comprising this segment was shown to bind to cell walls extracted from C. thermocellum cells., language=, type=