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MgRNA: Classification of Mg2+ binding sites in RNA crystal structures

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List of Mg2+ binding sites in structure 4pea




4PEA (2.95Å) -- RIBOSOME : Crystal structure of the e. coli ribosome bound to quinupristin. this file contains the 30s subunit of the second 70s ribosome.
List of all 36 Mg2+ binding sites in the PDB structure 4pea in the benchmark dataset (switch to full dataset)
Sites in the table can be ordered by the following fields by clicking the column header: "Site type" or "Mg2+ ID"
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Mg2+ ion Site type Inner-sphere ligands Outer-sphere ligands
PDB ID Mg2+ ID Oph Or Ob+Nb Water Other Pout Rout Bout
4pea A1638 Ob G:A1417(O6) A1873, A1874, A1875, A1876, A1877 G:A1416, G:A1415 G:A1416, U:A1481, G:A1482
4pea A1633 Ob G:A1108(O6) A1852, A1853, A1854, A1855 U:A1095, C:A1096
4pea A1611 Nb G:A362(N7) A1746, A1747, A1748, A1749, L201 G:A361, G:A362 G:A361
4pea A1609 Nb G:A324(N7) A1738, A1739, A1740, T103, T104 U:A323, G:A324
4pea A1625 2Nb G:A858(N7), G:A869(N7) A1816, A1817, A1818, A1819 G:A858, C:A868, G:A869
4pea A1632 Oph C:A1054(OP2) A1848, A1849, A1850, A1851 G:A1198, U:A1199
4pea A1627 Oph·Pout C:A934(OP1) A1825, A1826, A1827, A1828, A1829 U:A1345
4pea A1601 Oph·Pout G:A21(OP1) A1701, A1702, A1703, A1704, A1705 U:A561 G:A568, G:A567 A:A573, G:A567
4pea A1628 Oph·Pout A:A937(OP2) A1830, A1831, A1832, A1833, A1834 A:A938 A:A937, A:A938, G:A939
4pea A1602 Oph·Pout G:A100(OP2) A1706, A1707, A1708, A1709, A1710 A:A101 A:A101, G:A64, C:A99, G:A100, G:A102
4pea A1610 Oph·Pout C:A352(OP2) A1741, A1742, A1743, A1744, A1745 G:A354 C:A352, C:A330 G:A354, C:A330, A:A59
4pea A1616 Oph·Pout A:A547(OP1) A1770, A1771, A1772, A1773, A1774 G:A548 G:A402
4pea A1626 Oph·2Pout U:A891(OP2) A1820, A1821, A1822, A1823, A1824 A:A892, G:A903 A:A906, U:A905, U:A904
4pea A1621 Oph·2Pout A:A608(OP2) A1794, A1795, A1796, A1797, A1798 A:A607, A:A609 C:A631, A:A609, U:A610, A:A630, A:A608
4pea A1634 Oph·2Pout A:A1110(OP2) A1856, A1857, A1858, A1859, A1860 C:A1109, A:A1111 U:A1189, A:A1110, A:A1111
4pea A1624 Oph·2Pout A:A814(OP2) A1811, A1812, A1813, A1814, A1815 A:A815, G:A577 A:A816
4pea A1619 Oph·3Pout C:A578(OP1) A1783, A1784, A1785, A1786, A1787 C:A817, C:A576, U:A820 G:A575
4pea A1629 Oph·3Pout A:A964(OP1) A1835, A1836, A1837, A1838 U:A965, G:A1198, U:A1199
4pea A1617 Oph·4Pout A:A560(OP2) A1775, A1776, A1777, A1778, A1779 U:A562, A:A563, G:A557, G:A558 A:A559 G:A566
4pea A1604 Oph·Ob A:A195(OP2) U:A180(O4) A1714, A1715, A1716, A1717 A:A179, C:A194 A:A181, A:A179

Site type used in the classification is a string abbreviation of ligand composition in Mg2+ coordination sphere
Abbreviations
used for Mg2+
"Site type"
Mg2+ inner-sphere ligands Geometry for inner-sphere OP Mg2+ outer-sphere moieties
Oph phosphate oxygen (OP1/OP2)
Or ribose oxygen (O2'/O4')
     or oxygen bridging phosphate and ribose (O3'/O5')
Ob nucleobase oxygen      Nb nucleobase nitrogen
cis- two OP ligands adopt cis- isoform
trans- two OP ligands adopt trans- isoform
fac- three OP ligands adopt fac- isoform
mer- three OP ligands adopt mer- isoform
Pout phosphate moiety
Rout ribose moiety
Bout nucleobase moiety
Reference: Zheng H, Shabalin IG, Handing KB, Bujnicki JM, Minor W. (2015) Magnesium binding architectures in RNA crystal structures: validation, binding preferences, classification, and motif detection. Nucleic Acid Research 43(7):3789-801 [Pubmed].


Developed by Heping Zheng and Ivan Shabalin at Minor lab (http://olenka.med.virginia.edu/CrystUVa/)
For any help please contact <dust@iwonka.med.virginia.edu>