P21 holin family

The Phage 21 S (P21 Holin) Family (TC# 1.E.1) is a member of the Holin Superfamily II.[1]

The Bacteriophage P21 Lysis protein S holin (TC# 1.E.1.1.1) is the prototype for class II holins. Lysis S proteins have two transmembrane segments (TMSs), with both the N- and C-termini on the cytoplasmic side of the inner membrane.[2] TMS1 may be dispensable for function.[3]

A homologue of the P21 holin is the holin of bacteriophage H-19B (TC# 1.E.1.1.3). The gene encoding it has been associated with the Shiga-like Toxin I gene in E. coli.[4] It may function in toxin export as has been proposed for the X. nematophila holin-1 (TC #1.E.2.1.4).[5]

A representative list of proteins belonging to the P21 holin family can be found in the Transporter Classification Database.

See also

Further reading

References

  1. Reddy, Bhaskara L.; Saier, Milton H. (2013-11-01). "Topological and phylogenetic analyses of bacterial holin families and superfamilies". Biochimica Et Biophysica Acta 1828 (11): 2654–2671. doi:10.1016/j.bbamem.2013.07.004. ISSN 0006-3002. PMC 3788059. PMID 23856191.
  2. Gründling, A.; Bläsi, U.; Young, R. (2000-01-14). "Biochemical and genetic evidence for three transmembrane domains in the class I holin, lambda S". The Journal of Biological Chemistry 275 (2): 769–776. ISSN 0021-9258. PMID 10625606.
  3. Park, Taehyun; Struck, Douglas K.; Deaton, John F.; Young, Ry (2006-12-26). "Topological dynamics of holins in programmed bacterial lysis". Proceedings of the National Academy of Sciences of the United States of America 103 (52): 19713–19718. doi:10.1073/pnas.0600943103. ISSN 0027-8424. PMC 1750887. PMID 17172454.
  4. Neely, M. N.; Friedman, D. I. (1998-06-01). "Functional and genetic analysis of regulatory regions of coliphage H-19B: location of shiga-like toxin and lysis genes suggest a role for phage functions in toxin release". Molecular Microbiology 28 (6): 1255–1267. ISSN 0950-382X. PMID 9680214.
  5. Brillard, Julien; Boyer-Giglio, Marie Hélène; Boemare, Noël; Givaudan, Alain (2003-01-21). "Holin locus characterisation from lysogenic Xenorhabdus nematophila and its involvement in Escherichia coli SheA haemolytic phenotype". FEMS microbiology letters 218 (1): 107–113. ISSN 0378-1097. PMID 12583905.

As of 10 March 2016, this article is derived in whole or in part from Transporter Classification Database (TCDB). The copyright holder has licensed the content in a manner that permits reuse under CC BY-SA 3.0 and GFDL. All relevant terms must be followed. The original text was at "1.E.1 The P21 Holin S (P21 Holin) Family".

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