Zinc in PDB 7b9c: Structure of A Minimal SF3B Core in Complex with Spliceostatin A (Form I)

The structure of Structure of A Minimal SF3B Core in Complex with Spliceostatin A (Form I), PDB code: 7b9c was solved by C.Cretu, V.Pena, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	49.75 / 2.40
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	108.573, 111.066, 248.757, 90, 90, 90
R / Rfree (%)	21.6 / 24.8

The binding sites of Zinc atom in the Structure of A Minimal SF3B Core in Complex with Spliceostatin A (Form I) (pdb code 7b9c). This binding sites where shown within 5.0 Angstroms radius around Zinc atom.
In total 3 binding sites of Zinc where determined in the Structure of A Minimal SF3B Core in Complex with Spliceostatin A (Form I), PDB code: 7b9c:
Jump to Zinc binding site number: 1; 2; 3;

Zinc binding site 1 out of 3 in the Structure of A Minimal SF3B Core in Complex with Spliceostatin A (Form I)


Mono view


Stereo pair view

A full contact list of Zinc with other atoms in the Zn binding site number 1 of Structure of A Minimal SF3B Core in Complex with Spliceostatin A (Form I) within 5.0Å range: probe atom residue distance (Å) B Occ D:Zn101 b:61.3 occ:1.00 SG D:CYS46 2.1 64.1 1.0 SG D:CYS49 2.3 63.0 1.0 SG D:CYS85 2.4 59.6 1.0 SG D:CYS11 2.4 55.9 1.0 CB D:CYS46 3.0 55.7 1.0 CB D:CYS85 3.2 55.0 1.0 CB D:CYS11 3.3 56.6 1.0 CB D:CYS49 3.4 64.2 1.0 N D:CYS46 3.8 48.9 1.0 CA D:CYS46 4.0 58.9 1.0 N D:CYS49 4.4 72.8 1.0 CB D:LYS87 4.4 56.9 1.0 CB D:LYS13 4.4 64.3 1.0 CA D:CYS49 4.5 71.3 1.0 CD D:LYS13 4.5 71.3 1.0 C D:CYS46 4.7 57.0 1.0 CA D:CYS85 4.7 59.6 1.0 CA D:CYS11 4.7 54.4 1.0 O D:CYS46 4.8 54.7 1.0 CG D:LYS13 4.9 58.1 1.0 O D:CYS85 4.9 60.0 1.0 N D:LYS13 4.9 56.1 1.0

Zinc binding site 2 out of 3 in the Structure of A Minimal SF3B Core in Complex with Spliceostatin A (Form I)


Mono view


Stereo pair view

A full contact list of Zinc with other atoms in the Zn binding site number 2 of Structure of A Minimal SF3B Core in Complex with Spliceostatin A (Form I) within 5.0Å range: probe atom residue distance (Å) B Occ D:Zn102 b:53.6 occ:1.00 SG D:CYS33 2.2 51.9 1.0 SG D:CYS72 2.2 55.8 1.0 SG D:CYS75 2.4 54.2 1.0 SG D:CYS30 2.4 55.1 1.0 CB D:CYS72 3.2 41.4 1.0 CB D:CYS33 3.2 43.9 1.0 CB D:CYS75 3.4 52.5 1.0 CB D:CYS30 3.5 53.0 1.0 N D:CYS72 3.7 52.1 1.0 N D:CYS33 3.7 57.4 1.0 CA D:CYS72 4.0 49.3 1.0 CA D:CYS33 4.0 55.7 1.0 N D:CYS75 4.2 46.2 1.0 CA D:CYS75 4.4 48.4 1.0 CB D:ILE32 4.5 51.3 1.0 C D:CYS72 4.6 53.6 1.0 C D:CYS33 4.7 53.5 1.0 C D:ILE32 4.7 59.0 1.0 O D:CYS72 4.8 53.2 1.0 CA D:CYS30 4.9 53.4 1.0 C D:TYR71 4.9 50.8 1.0 CB D:SER35 4.9 55.4 1.0 O C:HOH1412 5.0 62.7 1.0 CA D:ILE32 5.0 51.9 1.0

Zinc binding site 3 out of 3 in the Structure of A Minimal SF3B Core in Complex with Spliceostatin A (Form I)


Mono view


Stereo pair view

A full contact list of Zinc with other atoms in the Zn binding site number 3 of Structure of A Minimal SF3B Core in Complex with Spliceostatin A (Form I) within 5.0Å range: probe atom residue distance (Å) B Occ D:Zn103 b:57.9 occ:1.00 SG D:CYS23 2.3 54.9 1.0 SG D:CYS61 2.3 65.5 1.0 SG D:CYS58 2.4 57.7 1.0 CB D:CYS61 3.3 54.8 1.0 CB D:CYS58 3.3 59.0 1.0 CB D:CYS23 3.4 56.6 1.0 S D:SCN104 3.5 73.4 1.0 N D:CYS61 3.7 62.7 1.0 CA D:CYS61 4.1 62.9 1.0 N D:CYS23 4.2 48.4 1.0 SG D:CYS26 4.2 58.5 1.0 CB D:ILE60 4.3 66.3 1.0 CA D:CYS23 4.4 63.0 1.0 C D:ILE60 4.6 62.9 1.0 CA D:CYS58 4.8 57.7 1.0 CA D:ILE60 4.8 60.6 1.0 N D:ILE60 4.9 56.3 1.0 C D:CYS61 4.9 68.3 1.0 CG1 D:ILE60 5.0 60.4 1.0 NZ D:LYS25 5.0 92.0 1.0

C.Cretu, P.Gee, X.Liu, A.Agrawal, T.V.Nguyen, A.K.Ghosh, A.Cook, M.Jurica, N.A.Larsen, V.Pena. Structural Basis of Intron Selection By U2 Snrnp in the Presence of Covalent Inhibitors. Nat Commun V. 12 4491 2021.
ISSN: ESSN 2041-1723
PubMed: 34301950
DOI: 10.1038/S41467-021-24741-1