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Table 1 Correlation coefficients between crosslinking frequencies and internucleotide geometry in different 30S structures

From: Hydrogen bonding and packing density are factors most strongly connected to limiting sites of high flexibility in the 16S rRNA in the 30S ribosome

 

Measure1

E. coli I

E. coli II

T. thermophilus

Ave.

UVB

Freq. vs 1/(C1'-C1')

0.627

0.495

0.389

0.504

 

Freq. vs B factor

0.464

0.402

0.296

0.386

UVA-s 4 U

Freq. vs 1/(C1'-C1')

0.388

0.389

0.538

0.438

 

Freq. vs B factor

0.567

0.317

0.269

0.384

UVB

BPA vs RBD

0.410

0.447

0.555

0.471

UVA-s 4 U

BPA vs RBD

0.394

0.366

0.783

0.514

  1. 1Measures are: C1'-C1', distance between C1' atoms; RBD, distance between centers of reactive bonds; RBA, angle between the reactive bonds; BPA, angle between the planes of the bases. The B factor is the average calculated for the heavy atoms of the nucleobases in each nucleotide pair. The correlation coefficient is the Pearson product-moment correlation coefficient. The geometrical parameters were calculated from the E. coli I, E. coli II [13] and T. thermophilus [11] 30S structures.