FAIRMol

OSA_Lib_200

Pose ID 222 Compound 176 Pose 222

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_200
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 high Native strong SASA done
Strain ΔE
20.7 kcal/mol
Protein clashes
1
Internal clashes
2
Native overlap
contact recall 0.71, Jaccard 0.60, H-bond role recall 0.00
Burial
89%
Hydrophobic fit
94%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.640 kcal/mol/HA) ✓ Good fit quality (FQ -6.41) ✓ Deep burial (89% SASA buried) ✓ Lipophilic contacts well-matched (94%) ✗ High strain energy (20.7 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (2) ✗ Many internal clashes (16)
Score
-21.765
kcal/mol
LE
-0.640
kcal/mol/HA
Fit Quality
-6.41
FQ (Leeson)
HAC
34
heavy atoms
MW
453
Da
LogP
4.88
cLogP
Strain ΔE
20.7 kcal/mol
SASA buried
89%
Lipo contact
94% BSA apolar/total
SASA unbound
735 Ų
Apolar buried
611 Ų

Interaction summary

HB 2 HY 24 PI 2 CLASH 2
Final rank1.392Score-21.765
Inter norm-0.808Intra norm0.168
Top1000noExcludedno
Contacts19H-bonds2
Artifact reasongeometry warning; 16 clashes; 2 protein contact clashes; 1 cofactor-context clash; moderate strain Δ 20.7
Residues
ALA10 ARG29 ASN65 GLN36 GLU31 ILE61 ILE8 LEU23 LEU28 LEU68 NAP201 PHE32 PHE35 PRO27 SER60 THR57 TRP25 TYR122 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 overlap15Native recall0.71
Jaccard0.60RMSD-
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
222 1.3923324089375781 -0.808218 -21.7652 2 19 15 0.71 0.00 - no Current
178 3.338899062088982 -0.675255 -8.28822 2 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 -21.765kcal/mol
Ligand efficiency (LE) -0.6402kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.405
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 452.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.88
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 20.72kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 82.61kcal/mol
Minimised FF energy 61.89kcal/mol

SASA & burial

✓ computed
SASA (unbound) 735.0Ų
Total solvent-accessible surface area of free ligand
BSA total 652.0Ų
Buried surface area upon binding
BSA apolar 610.6Ų
Hydrophobic contacts buried
BSA polar 41.4Ų
Polar contacts buried
Fraction buried 88.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 93.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1768.8Ų
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 1677.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 602.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)