Words similar to rhizobial
Example sentences for: rhizobial
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Collectively, comparison of the nematode and rhizobial nodL genes suggests that each is adapted for function in the organism in which it resides, and despite the high degree of similarity between the amino-acid sequences of these genes, the DNA sequences are strikingly different.
In particular, we considered how similar the Meloidogyne codon usage is to that of a 'typical' rhizobial protein by using the codon adaptation index (CAI) [ 44 ] . From an R. leguminosarum codon-usage table, we calculated the CAI for those amino acids precisely conserved between Mi-NodL and the rhizobial NodL protein to be 0.621 and 0.703 respectively.
Although it cannot be known if these genes were acquired in a single transfer event between a rhizobial ancestor and an ancestor to Meloidogyne , remnants of the HGT event (other than the already identified genes) may remain, and candidates are currently being mapped into the M. incognita genome to examine possible synteny with M. loti . BLAST analysis of the genes in the intervening span of chromosome indicates only three significant matches to the M. incognita (WMi) data set, all with significant matches to C. elegans , that is, they are not HGT candidates.
Two of the Meloidogyne genes revealed by our filters, which encode an L-threonine aldolase gene (MI01644) and a deduced protein of unknown function (MI00109), exhibit striking amino-acid identity to rhizobial proteins (48% and 51% respectively), but a complete absence of meaningful homology with any eukaryotic sequence (Table 3).
Unlike many prokaryotes, in which the genome resides largely on a single, circular chromosome, with varying numbers of small episomes, rhizobial genomes are typically organized in a manner conceptually more like eukaryotes.
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