FAIRMol

OSA_Lib_301

Pose ID 1573 Compound 893 Pose 218

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T03
L. major DHFR L. major
Ligand OSA_Lib_301

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
15.7 kcal/mol
Protein clashes
2
Internal clashes
14
Native overlap
contact recall 0.85, Jaccard 0.74, H-bond role recall 0.20
Burial
93%
Hydrophobic fit
98%
Reason: 14 internal clashes
2 protein-contact clashes 14 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.891 kcal/mol/HA) ✓ Good fit quality (FQ -8.68) ✓ Good H-bonds (5 bonds) ✓ Deep burial (93% SASA buried) ✓ Lipophilic contacts well-matched (98%) ✗ Moderate strain (15.7 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (2) ✗ Many internal clashes (14)
Score
-27.631
kcal/mol
LE
-0.891
kcal/mol/HA
Fit Quality
-8.68
FQ (Leeson)
HAC
31
heavy atoms
MW
413
Da
LogP
3.99
cLogP
Strain ΔE
15.7 kcal/mol
SASA buried
93%
Lipo contact
98% BSA apolar/total
SASA unbound
705 Ų
Apolar buried
643 Ų

Interaction summary

HB 5 HY 24 PI 3 CLASH 0
Final rank0.938Score-27.631
Inter norm-0.943Intra norm0.052
Top1000noExcludedno
Contacts20H-bonds5
Artifact reasongeometry warning; 14 clashes; 2 protein contact clashes
Residues
ALA32 ASP52 ILE45 LEU94 MET53 NDP301 PHE55 PHE56 PHE91 PRO88 SER44 SER86 THR180 THR83 TYR162 TYR178 VAL156 VAL30 VAL31 VAL87

Protein summary

225 residues
Protein targetT03Atoms3428
Residues225Chains2
Residue summaryLEU:380; ARG:360; VAL:272; LYS:264; ALA:240; GLU:240; PRO:224; PHE:180; THR:154; ILE:152; SER:132; TYR:126; GLN:119; ASN:98; GLY:84; 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

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name3CL9Contacts20
PoseOpen native poseHB0
IFP residues
ALA32 ARG97 ASP52 ILE45 LEU94 LYS57 MET53 NDP301 PHE56 PHE91 PRO88 SER86 THR180 THR54 THR83 TYR162 VAL156 VAL30 VAL31 VAL87
Current overlap17Native recall0.85
Jaccard0.74RMSD-
HB strict1Strict recall0.14
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.20

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.

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
218 0.9379658438872591 -0.943162 -27.6313 5 20 17 0.85 0.20 - no Current
157 1.1079134596156153 -0.921748 -28.2136 4 19 1 0.05 0.00 - no Open
234 2.12699497934314 -0.885557 -26.2468 2 21 0 0.00 0.00 - no Open
216 2.4771180272731397 -0.754589 -22.2052 2 14 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 -27.631kcal/mol
Ligand efficiency (LE) -0.8913kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.684
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 412.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.99
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 15.72kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 122.07kcal/mol
Minimised FF energy 106.35kcal/mol

SASA & burial

✓ computed
SASA (unbound) 705.3Ų
Total solvent-accessible surface area of free ligand
BSA total 657.6Ų
Buried surface area upon binding
BSA apolar 642.7Ų
Hydrophobic contacts buried
BSA polar 14.9Ų
Polar contacts buried
Fraction buried 93.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 97.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1704.4Ų
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 1820.7Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 806.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)