FAIRMol

MK218

Pose ID 5665 Compound 739 Pose 247

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T09
L. major DHFR-TS L. major
Ligand MK218

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
16.3 kcal/mol
Protein clashes
0
Internal clashes
11
Native overlap
contact recall 0.62, Jaccard 0.52, H-bond role recall 0.50
Burial
80%
Hydrophobic fit
80%
Reason: 11 internal clashes
11 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.917 kcal/mol/HA) ✓ Good fit quality (FQ -8.93) ✓ Good H-bonds (5 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ Moderate strain (16.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-28.415
kcal/mol
LE
-0.917
kcal/mol/HA
Fit Quality
-8.93
FQ (Leeson)
HAC
31
heavy atoms
MW
424
Da
LogP
3.89
cLogP
Strain ΔE
16.3 kcal/mol
SASA buried
80%
Lipo contact
80% BSA apolar/total
SASA unbound
727 Ų
Apolar buried
466 Ų

Interaction summary

HB 5 HY 24 PI 2 CLASH 0

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.
Final rank1.837Score-28.415
Inter norm-0.996Intra norm0.079
Top1000noExcludedno
Contacts17H-bonds5
Artifact reasongeometry warning; 11 clashes; 1 protein clash
Residues
NDP301 ALA32 ARG48 ASP52 GLY157 ILE45 MET53 PHE56 PHE91 PRO50 PRO88 TRP47 TYR162 VAL156 VAL30 VAL31 VAL49

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name3CL9Contacts21
PoseOpen native poseHB0
IFP residues
NDP301 ALA32 ARG97 ASP52 GLY157 ILE45 LEU94 LYS57 MET53 PHE55 PHE56 PHE91 PRO88 SER86 THR180 THR83 TYR162 VAL156 VAL30 VAL31 VAL87
Current overlap13Native recall0.62
Jaccard0.52RMSD-
HB strict3Strict recall0.43
HB same residue+role3HB role recall0.50
HB same residue3HB residue recall0.50

Protein summary

511 residues
Protein targetT09Atoms8170
Residues511Chains2
Residue summaryLEU:1064; ARG:840; LYS:572; GLU:570; VAL:528; PHE:460; ILE:456; ALA:440; PRO:420; THR:406; TYR:357; ASP:312; GLN:289; ASN:238; SER:231; GLY:224

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
272 0.36726388649663205 -1.07634 -28.4462 9 16 0 0.00 0.00 - no Open
329 1.0999927831279912 -0.892143 -20.6112 3 19 0 0.00 0.00 - no Open
247 1.8367897261852835 -0.996002 -28.4151 5 17 13 0.62 0.50 - no Current
328 2.868228427114262 -0.971001 -29.1342 5 15 0 0.00 0.00 - no Open
209 3.202189693744015 -0.93039 -24.7522 7 15 0 0.00 0.00 - no Open
239 3.3044571743805284 -1.13103 -27.1386 13 24 0 0.00 0.00 - no Open
236 3.688372365417219 -0.891707 -23.7953 8 18 0 0.00 0.00 - no Open
215 4.273909764805231 -1.01116 -28.8847 9 18 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 -28.415kcal/mol
Ligand efficiency (LE) -0.9166kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.930
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 423.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.89
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 16.34kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 50.34kcal/mol
Minimised FF energy 34.00kcal/mol

SASA & burial

✓ computed
SASA (unbound) 726.7Ų
Total solvent-accessible surface area of free ligand
BSA total 584.4Ų
Buried surface area upon binding
BSA apolar 465.7Ų
Hydrophobic contacts buried
BSA polar 118.7Ų
Polar contacts buried
Fraction buried 80.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3362.8Ų
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 4428.5Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1663.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)