Iridium in PDB 7oa3: Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form)

The structure of Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form), PDB code: 7oa3 was solved by M.Mieczkowski, V.Pena, C.Hoebartner, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	45.92 / 2.80
Space group	I 1 2 1
Cell size a, b, c (Å), α, β, γ (°)	70.605, 54.026, 87.532, 90, 95.49, 90
R / Rfree (%)	22.5 / 24.1

The structure of Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form) also contains other interesting chemical elements:

Potassium	(K)	4 atoms
Magnesium	(Mg)	2 atoms

The binding sites of Iridium atom in the Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form) (pdb code 7oa3). This binding sites where shown within 5.0 Angstroms radius around Iridium atom.
In total 5 binding sites of Iridium where determined in the Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form), PDB code: 7oa3:
Jump to Iridium binding site number: 1; 2; 3; 4; 5;

Iridium binding site 1 out of 5 in the Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form)


Mono view


Stereo pair view

A full contact list of Iridium with other atoms in the Ir binding site number 1 of Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form) within 5.0Å range: probe atom residue distance (Å) B Occ A:Ir105 b:228.2 occ:0.68 OP2 A:U38 3.2 156.6 1.0 O2' A:G42 4.2 127.5 1.0 C5' A:U38 4.2 147.5 1.0 O3' A:G37 4.3 148.8 1.0 P A:U38 4.3 152.0 1.0 OP2 A:U43 4.6 152.3 1.0 OP1 A:C40 4.6 132.4 1.0 OP2 A:C44 4.6 135.3 1.0 O3' A:G42 4.7 135.3 1.0 O5' A:U38 4.8 146.2 1.0 OP2 A:C40 4.9 130.0 1.0 OP2 A:G41 4.9 143.2 1.0 C5' A:U43 5.0 159.4 1.0

Iridium binding site 2 out of 5 in the Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form)


Mono view


Stereo pair view

A full contact list of Iridium with other atoms in the Ir binding site number 2 of Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form) within 5.0Å range: probe atom residue distance (Å) B Occ A:Ir106 b:179.8 occ:0.90 N7 A:A20 4.6 137.5 1.0 O4 A:U22 4.7 154.2 1.0 N6 A:A20 4.8 129.1 1.0 N7 A:G21 4.8 131.2 1.0 N4 A:C19 4.9 125.5 1.0 C5 A:C19 4.9 137.8 1.0

Iridium binding site 3 out of 5 in the Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form)


Mono view


Stereo pair view

A full contact list of Iridium with other atoms in the Ir binding site number 3 of Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form) within 5.0Å range: probe atom residue distance (Å) B Occ A:Ir107 b:156.2 occ:1.00 N4 A:C7 3.1 161.1 1.0 O6 A:G6 3.7 179.3 1.0 O6 A:G46 4.1 156.1 1.0 O4 A:U34 4.1 223.5 1.0 C4 A:C7 4.3 158.3 1.0 N7 A:G6 4.3 182.9 1.0 C6 A:G6 4.5 176.7 1.0 O4 A:U8 4.7 128.3 1.0 C5 A:G6 4.7 180.2 1.0 C4 A:U34 4.8 226.8 1.0 C5 A:C7 4.8 161.1 1.0 N3 A:U34 4.8 228.8 1.0

Iridium binding site 4 out of 5 in the Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form)


Mono view


Stereo pair view

A full contact list of Iridium with other atoms in the Ir binding site number 4 of Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form) within 5.0Å range: probe atom residue distance (Å) B Occ B:Ir105 b:195.0 occ:0.75 N4 B:C7 3.0 160.9 1.0 O6 B:G6 3.3 189.4 1.0 C6 B:G6 3.9 189.0 1.0 C4 B:C7 4.1 162.6 1.0 N7 B:G6 4.1 197.0 1.0 C5 B:G6 4.2 193.0 1.0 O6 B:G46 4.3 150.1 1.0 C5 B:C7 4.3 166.8 1.0 O4 B:U8 4.6 136.6 1.0 N1 B:G6 5.0 190.4 1.0

Iridium binding site 5 out of 5 in the Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form)


Mono view


Stereo pair view

A full contact list of Iridium with other atoms in the Ir binding site number 5 of Crystal Structure of Chili Rna Aptamer in Complex with Dmhbo+ (Iridium Hexammine Co-Crystallized Form) within 5.0Å range: probe atom residue distance (Å) B Occ B:Ir106 b:173.5 occ:0.61 N7 B:A20 4.6 138.3 1.0 C5 B:C19 4.9 145.5 1.0 N7 B:G21 4.9 148.7 1.0 N4 B:C19 5.0 132.2 1.0

M.Mieczkowski, C.Steinmetzger, I.Bessi, A.K.Lenz, A.Schmiedel, M.Holzapfel, C.Lambert, V.Pena, C.Hoebartner. Large Stokes Shift Fluorescence Activation in An Rna Aptamer By Intermolecular Proton Transfer to Guanine Nat Commun 2021.
ISSN: ESSN 2041-1723
DOI: 10.1038/S41467-021-23932-0