FAIRMol

MK218

Pose ID 1007 Compound 739 Pose 329

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T02
Human DHFR Human
Ligand MK218
PDB5SD8

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
25.9 kcal/mol
Protein clashes
2
Internal clashes
15
Native overlap
contact recall 0.71, Jaccard 0.60, H-bond role recall 0.00
Burial
90%
Hydrophobic fit
82%
Reason: 15 internal clashes
2 protein-contact clashes 15 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.665 kcal/mol/HA) ✓ Good fit quality (FQ -6.48) ✓ Good H-bonds (3 bonds) ✓ Deep burial (90% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ High strain energy (25.9 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (2) ✗ Many internal clashes (15)
Score
-20.611
kcal/mol
LE
-0.665
kcal/mol/HA
Fit Quality
-6.48
FQ (Leeson)
HAC
31
heavy atoms
MW
424
Da
LogP
3.89
cLogP
Strain ΔE
25.9 kcal/mol
SASA buried
90%
Lipo contact
82% BSA apolar/total
SASA unbound
709 Ų
Apolar buried
526 Ų

Interaction summary

HB 3 HY 24 PI 1 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 rank1.100Score-20.611
Inter norm-0.892Intra norm0.227
Top1000noExcludedno
Contacts19H-bonds3
Artifact reasongeometry warning; 15 clashes; 2 protein contact clashes; moderate strain Δ 25.9
Residues
ALA10 ASP22 GLU31 ILE61 ILE8 LEU23 LEU68 NAP201 PHE32 PHE35 PRO26 PRO27 SER60 THR57 TRP25 TYR122 TYR34 VAL116 VAL9

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name5SD8Contacts21
PoseOpen native poseHB0
IFP residues
ALA10 ASN65 ASP22 GLN36 GLU31 GLY117 GLY21 ILE61 ILE8 LEU23 LEU68 NAP201 PHE32 PHE35 PRO62 SER60 THR137 THR57 TYR122 VAL116 VAL9
Current overlap15Native recall0.71
Jaccard0.60RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

200 residues
Protein targetT02Atoms3128
Residues200Chains2
Residue summaryLYS:374; LEU:361; GLU:240; VAL:224; ARG:192; PHE:180; ILE:171; PRO:168; ASN:140; SER:132; TYR:126; GLN:119; ASP:108; MET:102; THR:98; GLY:91

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:NAP201

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 15 0.71 0.00 - no Current
247 1.8367897261852835 -0.996002 -28.4151 5 17 0 0.00 0.00 - no Open
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 -20.611kcal/mol
Ligand efficiency (LE) -0.6649kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.477
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) 25.93kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 58.16kcal/mol
Minimised FF energy 32.23kcal/mol

SASA & burial

✓ computed
SASA (unbound) 709.1Ų
Total solvent-accessible surface area of free ligand
BSA total 638.5Ų
Buried surface area upon binding
BSA apolar 525.5Ų
Hydrophobic contacts buried
BSA polar 113.0Ų
Polar contacts buried
Fraction buried 90.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1647.0Ų
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 1677.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 614.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)