Abstract.
A number of proteins have been identified that contain prominent sequence signatures that are uniquely shared by the members of the Deinococcus-Thermus genera and the cyanobacterial species but which are not found in any of the other eubacterial or archaebacterial homologs. The proteins containing such sequence signatures include (1) the DnaJ/Hsp40 family of proteins, (2) DNA polymerase I, (3) the protein synthesis elongation factor EF-Tu, and (4) the elongation factor EF-Ts. A strong affinity of the Deinococcus-Thermus species to cyanobacteria is also seen in the phylogenetic trees based on Hsp70 and DnaJ sequences. These results provide strong evidence of a close and specific evolutionary relationship between species belonging to these two eubacterial divisions.
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Received: 10 September 1997 / Accepted: 15 December 1997
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Gupta, R., Johari, V. Signature Sequences in Diverse Proteins Provide Evidence of a Close Evolutionary Relationship Between the Deinococcus-Thermus Group and Cyanobacteria. J Mol Evol 46, 716–720 (1998). https://doi.org/10.1007/PL00006352
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DOI: https://doi.org/10.1007/PL00006352