ISRm4-1 and ISRm9, two novel insertion sequences from Sinorhizobium meliloti.
Gene, 1998/1/19;207(1):93-6.
Affiliations
PMID: 9511748
Impact factor: 3.913
Abstract
Two novel insertion sequences, ISRm4-1 and ISRm9 have been identified in Sinorhizobium meliloti. ISRm4-1 is 936-bp in length, flanked by 17-bp putative terminal inverted repeats and a putative target duplication of 3-bp. ISRm4-1 is a member of the IS5 family of insertion sequences, closely related to ISRm4. ISRm9 is 2797-bp in length and carries 25-bp inverted repeats with target duplication of 7-bp: ISRm9 belongs to the IS21 family of insertion elements. On the non-pSym plasmid pRmeGR4b from S. meliloti strain GR4, a copy of ISRm4-1 is interrupted at nucleotide 150 from its 5'-end by a copy of ISRm9. Whereas ISRm4-like elements are widespread in S. meliloti, the distribution of ISRm9 appears to be correlated to that of pRmeGR4b-type plasmids.
MeSH terms
Amino Acid Sequence; DNA Transposable Elements; Molecular Sequence Data; Plasmids; Sinorhizobium meliloti
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