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Ethanol utilization regulatory protein: profile alignments give no evidence of origin through aldehyde and alcohol
H B Nicholas1, B Persson, H Jörnvall
1Pittsburgh Supercomputing Center, Pennsylvania 15213, USA. nicholas@psc.edu
Protein Science : a Publication of the Protein Society
|December 1, 1995
Abstract:
The suggestion that the ethanol regulatory protein from Aspergillus has its evolutionary origin in a gene fusion between aldehyde and alcohol dehydrogenase genes (Hawkins AR, Lamb HK, Radford A, Moore JD, 1994, Gene 146:145-158) has been tested by profile analysis with aldehyde and alcohol dehydrogenase family profiles. We show that the degree and kind of similarity observed between these profiles and the ethanol regulatory protein sequence is that expected from random sequences of the same composition. This level of similarity fails to support the suggested gene fusion.