8P1Q

USP28 in complex with FT206

Summary for 8P1Q

• Entry DOI: 10.2210/pdb8p1q/pdb
• Descriptor: Ubiquitin carboxyl-terminal hydrolase 28, DIMETHYL SULFOXIDE, 3-azanyl-N-[(2S)-6-[(1S,5R)-3,8-diazabicyclo[3.2.1]octan-3-yl]-1,2,3,4-tetrahydronaphthalen-2-yl]-6-methyl-thieno[2,3-b]pyridine-2-carboxamide, ... (4 entities in total)
• Functional Keywords: usp28, dub, ubiquitin, cancer, oncoprotein
• Biological source: Homo sapiens (human); More
• Total number of polymer chains: 2
• Total formula weight: 116817.74

Authors

Sauer, F.,Karal Nair, R.,Kisker, C. (deposition date: 2023-05-12, release date: 2024-05-22, Last modification date: 2024-12-04)

Primary citation

Patzke, J.V.,Sauer, F.,Nair, R.K.,Endres, E.,Proschak, E.,Hernandez-Olmos, V.,Sotriffer, C.,Kisker, C.
Structural basis for the bi-specificity of USP25 and USP28 inhibitors.
Embo Rep., 25:2950-2973, 2024

PubMed Abstract: The development of cancer therapeutics is often hindered by the fact that specific oncogenes cannot be directly pharmaceutically addressed. Targeting deubiquitylases that stabilize these oncogenes provides a promising alternative. USP28 and USP25 have been identified as such target deubiquitylases, and several small-molecule inhibitors indiscriminately inhibiting both enzymes have been developed. To obtain insights into their mode of inhibition, we structurally and functionally characterized USP28 in the presence of the three different inhibitors AZ1, Vismodegib and FT206. The compounds bind into a common pocket acting as a molecular sink. Our analysis provides an explanation why the two enzymes are inhibited with similar potency while other deubiquitylases are not affected. Furthermore, a key glutamate residue at position 366/373 in USP28/USP25 plays a central structural role for pocket stability and thereby for inhibition and activity. Obstructing the inhibitor-binding pocket by mutation of this glutamate may provide a tool to accelerate future drug development efforts for selective inhibitors of either USP28 or USP25 targeting distinct binding pockets.

PubMed: 38816515
DOI: 10.1038/s44319-024-00167-w

Experimental method

X-RAY DIFFRACTION (2.79 Å)