FAIRMol

MK60

Pose ID 3628 Compound 1285 Pose 242

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T06
T. brucei DHFR T. brucei
Ligand MK60
PDB8RHT

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
77.6 kcal/mol
Protein clashes
5
Internal clashes
5
Native overlap
contact recall 0.71, Jaccard 0.62, H-bond role recall 0.00
Burial
93%
Hydrophobic fit
84%
Reason: strain 77.6 kcal/mol
strain ΔE 77.6 kcal/mol 5 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.564 kcal/mol/HA) ✓ Good fit quality (FQ -5.55) ✓ Good H-bonds (3 bonds) ✓ Deep burial (93% SASA buried) ✓ Lipophilic contacts well-matched (84%) ✗ Extreme strain energy (77.6 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (8) ✗ Many internal clashes (11)
Score
-18.057
kcal/mol
LE
-0.564
kcal/mol/HA
Fit Quality
-5.55
FQ (Leeson)
HAC
32
heavy atoms
MW
440
Da
LogP
1.97
cLogP
Final rank
1.8673
rank score
Inter norm
-0.836
normalised
Contacts
18
H-bonds 3
Strain ΔE
77.6 kcal/mol
SASA buried
93%
Lipo contact
84% BSA apolar/total
SASA unbound
752 Ų
Apolar buried
589 Ų

Interaction summary

HBD 1 HBA 2 HY 11 PI 3 CLASH 5

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name8RHTContacts21
PoseOpen native poseHB0
IFP residues
ALA34 ASP54 HIS182 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE233 PHE58 PHE94 PRO91 SER89 THR184 THR86 TRP49 TYR166 TYR57 VAL32 VAL33
Current overlap15Native recall0.71
Jaccard0.62RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

223 residues
Protein targetT06Atoms3452
Residues223Chains1
Residue summaryARG:408; VAL:352; LYS:308; LEU:304; PRO:238; ILE:209; GLU:195; THR:182; SER:176; ALA:160; PHE:140; ASN:126; GLY:126; ASP:108; GLN:85; NDP:74

Receptor context

1 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 1 Excluded HETATM 0
Kept cofactors / ions
A:NDP301

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
242 1.8672644584153542 -0.836144 -18.057 3 18 15 0.71 0.00 - no Current
303 2.359866122997093 -0.836614 -24.9501 4 17 0 0.00 0.00 - no Open
206 3.093255363165126 -0.860978 -23.4242 8 17 0 0.00 0.00 - no Open
273 3.465928810989873 -0.678947 -17.9629 7 15 0 0.00 0.00 - no Open

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -18.057kcal/mol
Ligand efficiency (LE) -0.5643kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.549
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 439.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.97
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 77.63kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 206.01kcal/mol
Minimised FF energy 128.38kcal/mol

SASA & burial

✓ computed
SASA (unbound) 751.6Ų
Total solvent-accessible surface area of free ligand
BSA total 700.4Ų
Buried surface area upon binding
BSA apolar 589.4Ų
Hydrophobic contacts buried
BSA polar 111.0Ų
Polar contacts buried
Fraction buried 93.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 84.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1863.6Ų
SASA_nonpolar(complex) − SASA_nonpolar(receptor) − SASA_nonpolar(ligand free). Negative = non-polar surface buried upon binding. Requires full polarity-decomposed SASA computation.
Receptor non-polar SASA 1808.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 577.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)