5WPB

Crystal structure of fragment 3-(3-(pyridin-2-ylmethoxy)quinoxalin-2-yl)propanoic acid bound in the ubiquitin binding pocket of the HDAC6 zinc-finger domain

PDB DOI: https://doi.org/10.2210/pdb5WPB/pdb

Classification: hydrolase/hydrolase inhibitor
Organism(s): Homo sapiens
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2017-08-04 Released: 2017-08-23
Deposition Author(s): Harding, R.J., Tempel, W., Ferreira de Freitas, R., Franzoni, I., Ravichandran, M., Lautens, M., Santhakumar, V., Schapira, M., Bountra, C., Edwards, A.M., Arrowsmith, C.H., Structural Genomics Consortium (SGC)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.55 Å
R-Value Free: 0.162
R-Value Work: 0.143
R-Value Observed: 0.144

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.2 of the entry. See complete history.

Literature

Small Molecule Antagonists of the Interaction between the Histone Deacetylase 6 Zinc-Finger Domain and Ubiquitin.

Harding, R.J., Ferreira de Freitas, R., Collins, P., Franzoni, I., Ravichandran, M., Ouyang, H., Juarez-Ornelas, K.A., Lautens, M., Schapira, M., von Delft, F., Santhakumar, V., Arrowsmith, C.H.

(2017) J Med Chem 60: 9090-9096

PubMed: 29019676 Search on PubMed
DOI: https://doi.org/10.1021/acs.jmedchem.7b00933
Primary Citation of Related Structures:
5B8D, 5KH3, 5KH7, 5KH9, 5WPB

PubMed Abstract:
Inhibitors of HDAC6 have attractive potential in numerous cancers. HDAC6 inhibitors to date target the catalytic domains, but targeting the unique zinc-finger ubiquitin-binding domain (Zf-UBD) of HDAC6 may be an attractive alternative strategy. We developed X-ray crystallography and biophysical assays to identify and characterize small molecules capable of binding to the Zf-UBD and competing with ubiquitin binding. Our results revealed two adjacent ligand-able pockets of HDAC6 Zf-UBD and the first functional ligands for this domain.

Organizational Affiliation

Structural Genomics Consortium, University of Toronto , MaRS South Tower, Suite 700, 101 College Street, Toronto, Ontario M5G 1L7, Canada.

Macromolecule Content

Total Structure Weight: 12.13 kDa
Atom Count: 928
Modelled Residue Count: 102
Deposited Residue Count: 102
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone deacetylase 6	A	102	Homo sapiens	Mutation(s): 0 Gene Names: HDAC6, KIAA0901, JM21 EC: 3.5.1.98 (PDB Primary Data), 3.5.1 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UBN7 (Homo sapiens) Explore Q9UBN7 Go to UniProtKB: Q9UBN7
PHAROS: Q9UBN7 GTEx: ENSG00000094631
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q9UBN7
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
B8P Query on B8P Download Ideal Coordinates CCD File SDF format, chain E [auth A] MOL2 format, chain E [auth A] mmCIF format, chain E [auth A]	E [auth A]	3-{3-[(pyridin-2-yl)methoxy]quinoxalin-2-yl}propanoic acid C₁₇ H₁₅ N₃ O₃ TXJSUZJFIYIMRT-UHFFFAOYSA-N		Interactions Focus chain E [auth A]
ZN Query on ZN Download Ideal Coordinates CCD File SDF format, chain B [auth A] SDF format, chain C [auth A] SDF format, chain D [auth A] MOL2 format, chain B [auth A] MOL2 format, chain C [auth A] MOL2 format, chain D [auth A] mmCIF format, chain B [auth A] mmCIF format, chain C [auth A] mmCIF format, chain D [auth A]	B [auth A], C [auth A], D [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N		Interactions Focus chain B [auth A] Focus chain C [auth A] Focus chain D [auth A]
UNX Query on UNX Download Ideal Coordinates CCD File SDF format, chain F [auth A] SDF format, chain H [auth A] SDF format, chain P [auth A] SDF format, chain R [auth A] SDF format, chain S [auth A] SDF format, chain T [auth A] SDF format, chain G [auth A] SDF format, chain I [auth A] SDF format, chain J [auth A] SDF format, chain K [auth A] SDF format, chain L [auth A] SDF format, chain M [auth A] SDF format, chain N [auth A] SDF format, chain O [auth A] SDF format, chain Q [auth A] SDF format, chain U [auth A] SDF format, chain V [auth A] MOL2 format, chain F [auth A] MOL2 format, chain H [auth A] MOL2 format, chain P [auth A] MOL2 format, chain R [auth A] MOL2 format, chain S [auth A] MOL2 format, chain T [auth A] MOL2 format, chain G [auth A] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A] MOL2 format, chain K [auth A] MOL2 format, chain L [auth A] MOL2 format, chain M [auth A] MOL2 format, chain N [auth A] MOL2 format, chain O [auth A] MOL2 format, chain Q [auth A] MOL2 format, chain U [auth A] MOL2 format, chain V [auth A] mmCIF format, chain F [auth A] mmCIF format, chain H [auth A] mmCIF format, chain P [auth A] mmCIF format, chain R [auth A] mmCIF format, chain S [auth A] mmCIF format, chain T [auth A] mmCIF format, chain G [auth A] mmCIF format, chain I [auth A] mmCIF format, chain J [auth A] mmCIF format, chain K [auth A] mmCIF format, chain L [auth A] mmCIF format, chain M [auth A] mmCIF format, chain N [auth A] mmCIF format, chain O [auth A] mmCIF format, chain Q [auth A] mmCIF format, chain U [auth A] mmCIF format, chain V [auth A]	F [auth A] G [auth A] H [auth A] I [auth A] J [auth A] F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], M [auth A], N [auth A], O [auth A], P [auth A], Q [auth A], R [auth A], S [auth A], T [auth A], U [auth A], V [auth A]	UNKNOWN ATOM OR ION X		Interactions Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain O [auth A] Focus chain P [auth A] Focus chain Q [auth A] Focus chain R [auth A] Focus chain S [auth A] Focus chain T [auth A] Focus chain U [auth A] Focus chain V [auth A]