Isolation of an ftsZ homolog from the archaebacterium Halobacterium salinarium: Implications for the evolution of FtsZ and tubulin

William Margolin, Richard Wang, Madhu Kumar

Research output: Contribution to journalArticle

90 Scopus citations

Abstract

We have isolated a homolog of the cell division gene ftsZ from the extremely halophilic archaebacterium Halobacterium salinarium. The predicted protein of 39 kDa is divergent relative to eubacterial homologs, with 32% identity to Escherichia coli FtsZ. No other eubacterial cell division gene homologs were found adjacent to H. salinarium ftsZ. Expression of the ftsZ gene region in H. salinarium induced significant morphological changes leading to the loss of rod shape. Phylogenetic analysis demonstrated that the H. salinarium FtsZ protein is more related to tubulins than are the FtsZ proteins of eubacteria, supporting the hypothesis that FtsZ may have evolved into eukaryotic tubulin.

Original languageEnglish (US)
Pages (from-to)1320-1327
Number of pages8
JournalJournal of bacteriology
Volume178
Issue number5
DOIs
StatePublished - Mar 1996

ASJC Scopus subject areas

  • Microbiology
  • Molecular Biology

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