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Example sentences for: thra
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In the preceding report the authors have illustrated the properties of unidirectional n-metric estimation of similarity for the threonine operon of E. coli [ 12 ] . The same two two regions of thrA and thrB sequences of E. coli K-12 MG1655 are compared in Figure 5to highlight the advancement achieved by USM.
Similarly, the distribution of D values for the comparison of the proteomic thrA and thrB sequences is also represented in Figure 4, alongside with the null model, Eq. 11, for its dimensionality ( n = log 2 ( uu = 20 possible aminoacids) = 4.32 ), which is graphically nearly undistiguishable from that of the comparison between the stanzas, with n = log 2 ( uu = 19 possible letters) = 4.25 (dotted gray line for the rounded value, n = 4.3).
In summary, we found that RNA binding activity tolerates substitution of ThrB45, but not of ThrA45.
For the analysis of this figure it is noteworthy to recall that the statistical properties of prokaryote DNA are often undistinguishable from uniform randomness [ 12 18 19 ] . The genomic sequence of the first gene of the threonine operon of E. coli, thrA, is compared with that of the second, thrB.
X-ray structural analysis suggests that the hydroxyl of ThrA45 makes H-bonds with N6 and N7 of A-4.