3N3G

4-(3-Trifluoromethylphenyl)-pyrimidine-2-carbonitrile as cathepsin S inhibitors: N3, not N1 is critically important

PDB DOI: https://doi.org/10.2210/pdb3N3G/pdb

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

Deposited: 2010-05-20 Released: 2010-07-14
Deposition Author(s): Fradera, X., Uitdehaag, J.C.M., van Zeeland, M.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.60 Å
R-Value Free: 0.264
R-Value Work: 0.223
R-Value Observed: 0.225

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.1 of the entry. See complete history.

Literature

4-(3-Trifluoromethylphenyl)-pyrimidine-2-carbonitrile as cathepsin S inhibitors: N3, not N1 is critically important.

Cai, J., Fradera, X., van Zeeland, M., Dempster, M., Cameron, K.S., Bennett, D.J., Robinson, J., Popplestone, L., Baugh, M., Westwood, P., Bruin, J., Hamilton, W., Kinghorn, E., Long, C., Uitdehaag, J.C.

(2010) Bioorg Med Chem Lett 20: 4507-4510

PubMed: 20580231 Search on PubMed
DOI: https://doi.org/10.1016/j.bmcl.2010.06.043
Primary Citation of Related Structures:
3N3G

PubMed Abstract:
Using computer aided modelling studies, a new extended P2/S2 interaction was identified. This extended region can accommodate a variety of functional groups, such as aryls and basic amines. It was discovered that the N3 nitrogen of the pyrimidine-2-carbonitrile is critical for its cathepsin cysteine protease inhibition. N1 nitrogen also contributes to the inhibitory activity, but to a very limited degree. An 'in situ double activation' mechanism was proposed to explain these results.

Organizational Affiliation

Merck Research Laboratories, MSD, Newhouse, Lanarkshire, UK. jiaqiang.cai@merck.com

Macromolecule Content

Total Structure Weight: 49.7 kDa
Atom Count: 4,014
Modelled Residue Count: 434
Deposited Residue Count: 434
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cathepsin S	A, B	217	Homo sapiens	Mutation(s): 0 Gene Names: CTSS EC: 3.4.22.27
UniProt & NIH Common Fund Data Resources
Find proteins for P25774 (Homo sapiens) Explore P25774 Go to UniProtKB: P25774
PHAROS: P25774 GTEx: ENSG00000163131
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P25774
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
935 Query on 935 Download Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain J [auth B] MOL2 format, chain E [auth A] MOL2 format, chain J [auth B]	E [auth A], J [auth B]	(E)-1-(6-{4-[3-(4-methylpiperazin-1-yl)propoxy]-3-(trifluoromethyl)phenyl}pyridin-2-yl)methanimine C₂₁ H₂₅ F₃ N₄ O BNDJQLLXZUKTHM-MFKUBSTISA-N		Interactions Focus chain E [auth A] Focus chain J [auth B] Interactions & Density Focus chain E [auth A] Focus chain J [auth B]
93N Query on 93N Download Ideal Coordinates CCD File SDF format, chain F [auth A] MOL2 format, chain F [auth A]	F [auth A]	6-{4-[3-(4-methylpiperazin-1-yl)propoxy]-3-(trifluoromethyl)phenyl}pyridine-2-carbonitrile C₂₁ H₂₃ F₃ N₄ O CWICZCHZPOSFKO-UHFFFAOYSA-N		Interactions Focus chain F [auth A] Interactions & Density Focus chain F [auth A]
PEG Query on PEG Download Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A]	C [auth A]	DI(HYDROXYETHYL)ETHER C₄ H₁₀ O₃ MTHSVFCYNBDYFN-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]
SO4 Query on SO4 Download Ideal Coordinates CCD File SDF format, chain G [auth B] MOL2 format, chain G [auth B]	G [auth B]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain G [auth B] Interactions & Density Focus chain G [auth B]
GOL Query on GOL Download Ideal Coordinates CCD File SDF format, chain H [auth B] SDF format, chain I [auth B] MOL2 format, chain H [auth B] MOL2 format, chain I [auth B]	H [auth B], I [auth B]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain H [auth B] Focus chain I [auth B] Interactions & Density Focus chain H [auth B] Focus chain I [auth B]
DMS Query on DMS Download Ideal Coordinates CCD File SDF format, chain D [auth A] MOL2 format, chain D [auth A]	D [auth A]	DIMETHYL SULFOXIDE C₂ H₆ O S IAZDPXIOMUYVGZ-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Interactions & Density Focus chain D [auth A]

Binding Affinity Annotations
ID	Source	Binding Affinity
93N	PDBBind: 3N3G	Ki: 58 (nM) from 1 assay(s)
	BindingDB: 3N3G	IC50: 58 (nM) from 1 assay(s)
	BindingDB: 3N3G	EC50: 138 (nM) from 1 assay(s)