Table 1.
Transition metal content in RNA structures.
| Group | 3 (IIIB) |
4 (IVB) |
5 (VB) |
6 (VIB) |
7 (VIIB) |
8 (VIIIB) |
9 (VIIIB) |
10 (VIIIB) |
11 (IB) |
12 (IIB) |
| Period 4 | Sc 0 |
Ti 0 |
V 2 |
Cr 0 |
Mn 16 |
Fe 0 |
Co 32 |
Ni 0 |
Cu 0 |
Zn 64 |
| Period 5 | Y 0 |
Zr 0 |
Nb 0 |
Mo 0 |
Tc 0 |
Ru 1 |
Rh 4 |
Pd 0 |
Ag 0 |
Cd 42 |
| Period 6 | La 0 |
Hf 0 |
Ta 0 |
W 6 |
Re 0 |
Os 3 |
Ir 3 |
Pt 1 |
Au 0 |
Hg 3 |
Essential metals are shown in bold font. The data are taken from the February 2007 release of the MERNA database [143,144], and reflect data from 389 individual RNA-containing structures. Each value represents the number of structures where the indicated transition metal atoms are located within 6 Å from the nearest RNA atom.