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Genetic polymorphisms in three subtilisin-like protease isoforms (Pr1A, Pr1B, and Pr1C) from Metarhizium strains.

Canadian journal of microbiology, ISSN: 0008-4166, Vol: 46, Issue: 12, Page: 1138-44
2000
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Article Description

Restriction fragment length polymorphisms (RFLP) were examined in three isoforms of a gene family encoding subtilisin-like proteases (Pr1A, Pr1B, and Pr1C) in several isolates of the entomopathogenic fungus Metarhizium anisopliae. RFLP variation was not observed in any of the Pr1 genes from isolates within the same genetically related group. Between genetically related groups and between isolates from disparate geographical areas, the greatest variation in RFLP patterns was observed for Pr1A. When variation does occur at Pr1B and Pr1C, it was generally observed at an EcoRI site. Metarhizium anisopliae var. majus strain 473 and a M. flavoviride isolate were most dissimilar in RFLP patterns at all Pr1 genes when compared to the M. anisopliae strains. We suggest that Pr1 genes represent a gene family of subtilisin-like proteases and that the Pr1A gene encodes for the ancestral subtilisin-like protease which has subsequently duplicated and rearranged within the genome.

Bibliographic Details

Michael J Bidochka; Michael J Melzer

Canadian Science Publishing

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