Antonie van Leeuwenhoek

, Volume 76, Issue 1–4, pp 139–155 | Cite as

Multi-domain, cell-envelope proteinases of lactic acid bacteria

  • Roland J. Siezen


The multi-domain, cell-envelope proteinases encoded by the genes prtB of Lactobacillus delbrueckii subsp. bulgaricus, prtH of Lactobacillus helveticus, prtP of Lactococcus lactis, scpA of Streptococcus pyogenes and csp of Streptococcus agalactiae have been compared using multiple sequence alignment, secondary structure prediction and database homology searching methods. This comparative analysis has led to the prediction of a number of different domains in these cell-envelope proteinases, and their homology, characteristics and putative function are described. These domains include, starting from the N-terminus, a pre-pro-domain for secretion and activation, a serine protease domain (with a smaller inserted domain), two large middle domains A and B of unknown but possibly regulatory function, a helical spacer domain, a hydrophilic cell-wall spacer or attachment domain, and a cell-wall anchor domain. Not all domains are present in each cell-envelope proteinase, suggesting that these multi-domain proteins are the result of gene shuffling and domain swapping during evolution.

cell envelope cell surface domains lactic acid bacteria proteinase subtilase 


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Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • Roland J. Siezen
    • 1
    • 2
  1. 1.NIZO food researchEdeThe Netherlands
  2. 2.Wageningen Centre for Food SciencesWageningenThe Netherlands

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