FAIRMol

OSA_Lib_227

Pose ID 895 Compound 968 Pose 217

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 OSA_Lib_227
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
39.0 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.76, Jaccard 0.64, H-bond role recall 0.00
Burial
92%
Hydrophobic fit
99%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.528 kcal/mol/HA) ✓ Good fit quality (FQ -5.37) ✓ Deep burial (92% SASA buried) ✓ Lipophilic contacts well-matched (99%) ✗ Very high strain energy (39.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (16)
Score
-19.005
kcal/mol
LE
-0.528
kcal/mol/HA
Fit Quality
-5.37
FQ (Leeson)
HAC
36
heavy atoms
MW
489
Da
LogP
2.06
cLogP
Strain ΔE
39.0 kcal/mol
SASA buried
92%
Lipo contact
99% BSA apolar/total
SASA unbound
790 Ų
Apolar buried
722 Ų

Interaction summary

HB 1 HY 24 PI 2 CLASH 4
Final rank2.822Score-19.005
Inter norm-0.773Intra norm0.245
Top1000noExcludedno
Contacts20H-bonds1
Artifact reasongeometry warning; 16 clashes; 1 protein clash; high strain Δ 39.0
Residues
ALA10 ASP22 GLU31 ILE61 ILE8 LEU23 LEU28 LEU68 NAP201 PHE32 PHE35 PRO27 PRO62 SER60 THR137 THR57 TRP25 TYR34 VAL116 VAL9

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

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 overlap16Native recall0.76
Jaccard0.64RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
217 2.8221101969332563 -0.772931 -19.0049 1 20 16 0.76 0.00 - no Current

Molecular metrics

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

Scoring & efficiency

Docking score -19.005kcal/mol
Ligand efficiency (LE) -0.5279kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.366
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 488.8Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.06
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 39.05kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 250.18kcal/mol
Minimised FF energy 211.13kcal/mol

SASA & burial

✓ computed
SASA (unbound) 790.4Ų
Total solvent-accessible surface area of free ligand
BSA total 726.9Ų
Buried surface area upon binding
BSA apolar 722.4Ų
Hydrophobic contacts buried
BSA polar 4.5Ų
Polar contacts buried
Fraction buried 92.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 99.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1863.7Ų
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 600.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)