FAIRMol

Z56971423

Pose ID 3894 Compound 294 Pose 508

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T06
T. brucei DHFR T. brucei
Ligand Z56971423
PDB8RHT

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
16.1 kcal/mol
Protein clashes
9
Internal clashes
9
Native overlap
contact recall 0.76, Jaccard 0.67, H-bond role recall 0.00
Burial
89%
Hydrophobic fit
76%
Reason: 9 protein-contact clashes, 9 internal clashes
9 protein-contact clashes 9 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.680 kcal/mol/HA) ✓ Good fit quality (FQ -6.56) ✓ Deep burial (89% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ Moderate strain (16.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (19)
Score
-20.407
kcal/mol
LE
-0.680
kcal/mol/HA
Fit Quality
-6.56
FQ (Leeson)
HAC
30
heavy atoms
MW
400
Da
LogP
2.84
cLogP
Strain ΔE
16.1 kcal/mol
SASA buried
89%
Lipo contact
76% BSA apolar/total
SASA unbound
666 Ų
Apolar buried
451 Ų

Interaction summary

HB 2 HY 24 PI 1 CLASH 9
Final rank3.957Score-20.407
Inter norm-0.819Intra norm0.113
Top1000noExcludedno
Contacts19H-bonds2
Artifact reasongeometry warning; 19 clashes; 1 protein clash
Residues
ALA34 ASP54 GLU50 GLY45 ILE160 ILE47 LEU90 MET55 NDP301 PHE58 PHE94 PRO91 SER89 THR184 THR46 THR86 TYR166 VAL32 VAL33

Protein summary

223 residues
Protein targetT06Atoms3452
Residues223Chains1
Residue summaryARG:408; VAL:352; LYS:308; LEU:304; PRO:238; ILE:209; GLU:195; THR:182; SER:176; ALA:160; PHE:140; ASN:126; GLY:126; ASP:108; GLN:85; 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.
Name8RHTContacts21
PoseOpen native poseHB0
IFP residues
ALA34 ASP54 HIS182 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE233 PHE58 PHE94 PRO91 SER89 THR184 THR86 TRP49 TYR166 TYR57 VAL32 VAL33
Current overlap16Native recall0.76
Jaccard0.67RMSD-
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
524 1.688891324185852 -0.910844 -22.099 3 15 0 0.00 0.00 - no Open
552 1.8904526726165263 -0.855184 -22.6696 3 19 0 0.00 0.00 - no Open
503 3.2412176734711755 -1.1393 -36.6216 6 20 0 0.00 0.00 - no Open
508 3.956584465844293 -0.818907 -20.4075 2 19 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 -20.407kcal/mol
Ligand efficiency (LE) -0.6802kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.562
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 400.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.84
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 16.12kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 72.65kcal/mol
Minimised FF energy 56.52kcal/mol

SASA & burial

✓ computed
SASA (unbound) 665.7Ų
Total solvent-accessible surface area of free ligand
BSA total 593.7Ų
Buried surface area upon binding
BSA apolar 450.8Ų
Hydrophobic contacts buried
BSA polar 142.9Ų
Polar contacts buried
Fraction buried 89.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 75.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1730.2Ų
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 1808.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 601.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)