FAIRMol

OSA_Lib_221

Pose ID 891 Compound 815 Pose 213

DB fairmolDocking 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_221
PDB5SD8

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
47.1 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.81, Jaccard 0.68, H-bond role recall 0.00
Burial
88%
Hydrophobic fit
94%
Reason: strain 47.1 kcal/mol
strain ΔE 47.1 kcal/mol 2 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.475 kcal/mol/HA) ✓ Good fit quality (FQ -4.86) ✓ Deep burial (88% SASA buried) ✓ Lipophilic contacts well-matched (94%) ✗ Extreme strain energy (47.1 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Many internal clashes (16)
Score
-17.570
kcal/mol
LE
-0.475
kcal/mol/HA
Fit Quality
-4.86
FQ (Leeson)
HAC
37
heavy atoms
MW
504
Da
LogP
1.92
cLogP
Final rank
1.6418
rank score
Inter norm
-0.724
normalised
Contacts
21
H-bonds 2
Strain ΔE
47.1 kcal/mol
SASA buried
88%
Lipo contact
94% BSA apolar/total
SASA unbound
796 Ų
Apolar buried
656 Ų

Interaction summary

HBD 1 HBA 1 HY 10 PI 2 CLASH 2

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 2.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: permissive.
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 overlap17Native recall0.81
Jaccard0.68RMSD-
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
213 1.6417533593430607 -0.724157 -17.5696 2 21 17 0.81 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 -17.570kcal/mol
Ligand efficiency (LE) -0.4749kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -4.862
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 37HA

Physicochemical properties

Molecular weight 503.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.92
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 47.07kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 199.37kcal/mol
Minimised FF energy 152.30kcal/mol

SASA & burial

✓ computed
SASA (unbound) 796.0Ų
Total solvent-accessible surface area of free ligand
BSA total 701.5Ų
Buried surface area upon binding
BSA apolar 656.5Ų
Hydrophobic contacts buried
BSA polar 44.9Ų
Polar contacts buried
Fraction buried 88.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 93.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1825.8Ų
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 599.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)