FAIRMol

OSA_Lib_220

Pose ID 228 Compound 374 Pose 228

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T01
Human DHFR Human
Ligand OSA_Lib_220
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
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
21.9 kcal/mol
Protein clashes
3
Internal clashes
4
Native overlap
contact recall 0.86, Jaccard 0.75, H-bond role recall 0.00
Burial
89%
Hydrophobic fit
98%
Reason: no major geometry red flags detected
3 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.578 kcal/mol/HA) ✓ Good fit quality (FQ -5.96) ✓ Deep burial (89% SASA buried) ✓ Lipophilic contacts well-matched (98%) ✗ High strain energy (21.9 kcal/mol) ✗ No H-bonds detected ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Many internal clashes (22)
Score
-21.966
kcal/mol
LE
-0.578
kcal/mol/HA
Fit Quality
-5.96
FQ (Leeson)
HAC
38
heavy atoms
MW
517
Da
LogP
3.72
cLogP
Strain ΔE
21.9 kcal/mol
SASA buried
89%
Lipo contact
98% BSA apolar/total
SASA unbound
832 Ų
Apolar buried
720 Ų

Interaction summary

HB 0 HY 24 PI 2 CLASH 4
Final rank2.204Score-21.966
Inter norm-0.671Intra norm0.093
Top1000noExcludedno
Contacts21H-bonds0
Artifact reasongeometry warning; 22 clashes; 3 protein contact clashes; 1 cofactor-context clash; moderate strain Δ 21.9
Residues
ALA10 ARG29 ASN65 ASP22 GLN36 GLU31 GLY21 ILE61 ILE8 LEU23 LEU28 LEU68 NAP201 PHE32 PHE35 PRO27 PRO62 SER60 TYR122 VAL116 VAL9

Protein summary

200 residues
Protein targetT01Atoms3128
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

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 overlap18Native recall0.86
Jaccard0.75RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

HB · H-bonds

No hb · h-bonds detected for this pose.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
228 2.2036864552981923 -0.671415 -21.9656 0 21 18 0.86 0.00 - no Current
239 4.264696382249106 -0.608658 -22.6201 2 17 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 -21.966kcal/mol
Ligand efficiency (LE) -0.5780kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.959
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 38HA

Physicochemical properties

Molecular weight 516.8Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.72
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 21.87kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 133.74kcal/mol
Minimised FF energy 111.87kcal/mol

SASA & burial

✓ computed
SASA (unbound) 831.6Ų
Total solvent-accessible surface area of free ligand
BSA total 736.9Ų
Buried surface area upon binding
BSA apolar 720.1Ų
Hydrophobic contacts buried
BSA polar 16.8Ų
Polar contacts buried
Fraction buried 88.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 97.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1899.6Ų
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 1677.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 588.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)