`

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

Back to Classification Home Download this subset in: CSV, XML, JSON

List of Mg2+ binding sites in structure 2otj




2OTJ (2.9Å) -- RIBOSOME : 13-deoxytedanolide bound to the large subunit of haloarcula marismortui
List of all 117 Mg2+ binding sites in the PDB structure 2otj in the full dataset (switch to benchmark dataset)
Sites in the table can be ordered by the following fields by clicking the column header: "benchmark dataset", "Coordination Number", "Qv #", "Qs #", "Qe #", "Site type" or "Mg2+ ID"
Page 3 of 6 | | | 1 | 2 | 3 | 4 | 5 | 6
Mg2+ ion Site type Validation parameters
PDB ID Mg2+ ID Coordination Number Qv # Qs # Qe # benchmark dataset
2otj 08099 Or 4  0.37  0.50  0.66no
2otj 08106 poly-nuclear Mg2+ site 5  0.26  0.41  0.59no
2otj 08113 poly-nuclear Mg2+ site 6  0.34  0.95  0.94no
2otj T8073 Mg2+ not bound by RNA 6  0.18  0.75  0.69no
2otj 38078 Mg2+ bound by non-RNA 6  0.92  0.57  0.35no
2otj 08010 Mg2+ bound by non-RNA 6  0.28  0.79  0.29no
2otj 08043 poly-nuclear Mg2+ site 4  0.28  0.30  0.99no
2otj 08064 poly-nuclear Mg2+ site 6  0.15  0.86  1.00no
2otj 08067 Mg2+ bound by non-RNA 5  0.40  0.83  0.99no
2otj 08085 poly-nuclear Mg2+ site 6  0.18  0.63  0.81no
2otj 08115 poly-nuclear Mg2+ site 4  0.42  0.39  0.53no
2otj 08116 poly-nuclear Mg2+ site 6  0.19  0.76  0.86no
2otj 38118 Mg2+ bound by non-RNA 3  0.49  0.05  0.24no
2otj Y8109 Mg2+ not bound by RNA 6  0.33  0.78  0.94no
2otj 08048 cis-2Oph 5  0.94  0.87  0.79yes
2otj K8069 Mg2+ bound by non-RNA 6  0.75  0.84  0.97yes
2otj 08054 cis-2Oph 6  0.85  0.91  0.97yes
2otj 08061 cis-2Oph 6  0.89  0.81  0.77yes
2otj 08074 cis-2Oph 6  0.95  0.83  0.76yes
2otj 08080 cis-2Oph 6  0.57  0.66  0.95yes

# Validation parameters Qv, Qs, Qe are defined in the range of 0 to 1, with 0 indicating poorest reliability and higher value indicating a more reliable site
Qv measures the agreement of the inner-sphere bond valence summation with the oxidation state of Mg2+ (+2)
Qs measures the geometrical symmetry of the ligands distribution around the Mg2+ required for octahedral geometry
Qe measures the agreement of the isotropic atomic displacement (B) factor and occupancy of the Mg2+ compared to those of all atoms in its environment

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>