6F7B

Crystal structure of the human Bub1 kinase domain in complex with BAY 1816032

• PDB DOI: https://doi.org/10.2210/pdb6F7B/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Trichoplusia ni
• Mutation(s): No 


• Deposited: 2017-12-08 Released: 2018-12-19 
• Deposition Author(s): Holton, S.J., Siemeister, G., Mengel, A., Bone, W., Schroeder, J., Zitzmann-Kolbe, S., Briem, H., Fernandez-Montalvan, A., Prechtl, S., Moenning, U., von Ahsen, O., Johanssen, J., Cleve, A., Puetter, V., Hitchcock, M., von Nussbaum, F., Brands, M., Mumberg, D., Ziegelbauer, K.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.254 
• R-Value Work: 0.198 
• R-Value Observed: 0.201 

Literature

Inhibition of BUB1 Kinase by BAY 1816032 Sensitizes Tumor Cells toward Taxanes, ATR, and PARP InhibitorsIn VitroandIn Vivo.

Siemeister, G., Mengel, A., Fernandez-Montalvan, A.E., Bone, W., Schroder, J., Zitzmann-Kolbe, S., Briem, H., Prechtl, S., Holton, S.J., Monning, U., von Ahsen, O., Johanssen, S., Cleve, A., Putter, V., Hitchcock, M., von Nussbaum, F., Brands, M., Ziegelbauer, K., Mumberg, D.

(2019) Clin Cancer Res 25: 1404-1414

• PubMed: 30429199 
• DOI: https://doi.org/10.1158/1078-0432.CCR-18-0628
• Primary Citation of Related Structures:  
  6F7B


• PubMed Abstract: 
  

  The catalytic function of BUB1 is required for chromosome arm resolution and positioning of the chromosomal passenger complex for resolution of spindle attachment errors and plays only a minor role in spindle assembly checkpoint activation. Here, we present the identification and preclinical pharmacologic profile of the first BUB1 kinase inhibitor with good bioavailability.

---

Organizational Affiliation: 

Bayer AG, Muellerstrasse Berlin, Germany. [e-mail].

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 42.04 kDa 
• Atom Count: 3,055 
• Modelled Residue Count: 343 
• Deposited Residue Count: 361 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Mitotic checkpoint serine/threonine-protein kinase BUB1	A	361	Homo sapiens	Mutation(s): 0  Gene Names: BUB1, BUB1L EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for O43683 (Homo sapiens) Explore O43683  Go to UniProtKB:  O43683
PHAROS:  O43683 GTEx:  ENSG00000169679

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CVQ	B [auth A]	2-[3,5-bis(fluoranyl)-4-[[3-[5-methoxy-4-[(3-methoxypyridin-4-yl)amino]pyrimidin-2-yl]indazol-1-yl]methyl]phenoxy]ethanol C27 H24 F2 N6 O4 QVOGVAVHOLLLAZ-UHFFFAOYSA-N
MG	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
SEP	A	L-PEPTIDE LINKING	C3 H8 N O6 P		SER

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.254 
• R-Value Work: 0.198 
• R-Value Observed: 0.201 
• Space Group: P 2₁ 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.497	α = 90
b = 60.093	β = 90
c = 124.469	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2018-12-19 
Deposition Author(s): Holton, S.J., Siemeister, G., Mengel, A., Bone, W., Schroeder, J., Zitzmann-Kolbe, S., Briem, H., Fernandez-Montalvan, A., Prechtl, S., Moenning, U., von Ahsen, O., Johanssen, J., Cleve, A., Puetter, V., Hitchcock, M., von Nussbaum, F., Brands, M., Mumberg, D., Ziegelbauer, K.

Revision History  

• Version 1.0: 2018-12-19
  Type: Initial release
  
• Version 1.1: 2019-04-24
  Changes: Data collection, Database references
• Version 1.2: 2021-05-05
  Changes: Derived calculations