Words similar to acidophilum
Example sentences for: acidophilum
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The other two major differences in codon usage between the T. acidophilum A-ATPase A subunit and E. coli are AGG (Arg) and AGA (Arg) which are present in T. acidophilum A-ATPase A subunit at frequencies of 41 and 16 per 1000 respectively.
Multiple sequence alignments of diverse intein sequences identified eight motifs composed of moderately conserved residues [ 18 28 ] . The A-ATPase A subunit of the Thermoplasma and Pyrococcus intein multiple sequence alignment (with manual modification) is shown in figure 1. The T. acidophilum intein (173 amino acids long) is among the shortest inteins known, and the alignment with other inteins reveals the absence of sequences homologous to the typical endonuclease motifs.
Using PSI-BLAST [ 27 ] with different inteins as seeds, divergent inteins with less than ten percent sequence identity as compared to the query sequence are recovered (data not shown); however, using this approach we did not discover any additional intein or homing endonuclease encoding genes in T. acidophilum.
Here we present data on the cloning and expression of the T. acidophilum A-ATPase A subunit in E. coli, and we discuss implications for the location, propagation and distribution of inteins among organisms.
Apparently, the small intein has been persisting in the Thermoplasma A-ATPase since the split between T. acidophilum and T. volcanium without the help of a homing endonuclease.