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Distribution of GyrA intein in non‐tuberculous mycobacteria and genomic heterogeneity of Mycobacterium gastri
Author(s) -
Isabelle Saves,
Mamadou Daffé,
Jean-Michel Masson
Publication year - 2001
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(01)03037-x
Subject(s) - intein , biology , mycobacterium , microbiology and biotechnology , phylogenetic tree , mycobacterium leprae , genetics , gene , bacteria , leprosy , immunology , rna , rna splicing
To gain further insights into the understanding of the intein invasion process in mycobacteria, intein sequences in the gyrA gene of 42 mycobacterial strains were searched and a new gyrA intein was found in Mycobacterium gastri ( Mga ). This 1260 bp intein, named Mga GyrA, inserted at the GyrA‐a site, is highly homologous to the members of the Mycobacterium leprae GyrA allelic family. As the recA intein, Mga GyrA was detected in only one out of six Mga strains examined, while the pps1 intein was a constant character of Mga . This data supports the genomic heterogeneity of Mga towards intein invasion, a finding that may have phylogenetic implications.