FAIRMol

Z27504791

Pose ID 3900 Compound 455 Pose 514

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 Z27504791
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
31.5 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.67, Jaccard 0.56, H-bond role recall 0.50
Burial
95%
Hydrophobic fit
74%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.821 kcal/mol/HA) ✓ Good fit quality (FQ -7.75) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (95% SASA buried) ✓ Lipophilic contacts well-matched (74%) ✗ Very high strain energy (31.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-22.991
kcal/mol
LE
-0.821
kcal/mol/HA
Fit Quality
-7.75
FQ (Leeson)
HAC
28
heavy atoms
MW
400
Da
LogP
1.79
cLogP
Strain ΔE
31.5 kcal/mol
SASA buried
95%
Lipo contact
74% BSA apolar/total
SASA unbound
690 Ų
Apolar buried
483 Ų

Interaction summary

HB 7 HY 24 PI 3 CLASH 6
Final rank3.464Score-22.991
Inter norm-0.916Intra norm0.094
Top1000noExcludedno
Contacts18H-bonds7
Artifact reasongeometry warning; 11 clashes; 1 protein clash; high strain Δ 31.5
Residues
ALA34 ARG100 ARG59 ASP54 GLN56 HIS182 ILE47 LEU97 MET55 NDP301 PHE233 PHE58 PHE94 THR184 TYR57 VAL32 VAL33 VAL61

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 overlap14Native recall0.67
Jaccard0.56RMSD-
HB strict2Strict recall0.40
HB same residue+role2HB role recall0.50
HB same residue2HB residue recall0.50

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
554 2.6476724389697357 -0.920456 -26.2372 5 20 0 0.00 0.00 - no Open
569 2.791537985089909 -0.869779 -23.8677 7 11 0 0.00 0.00 - no Open
504 3.3602686908640718 -1.04839 -25.9211 9 16 0 0.00 0.00 - no Open
514 3.463700765775954 -0.916212 -22.9905 7 18 14 0.67 0.50 - no Current
549 3.687891063104616 -0.894262 -23.7986 9 17 0 0.00 0.00 - no Open
551 4.325699686745317 -0.778701 -23.0924 5 12 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 -22.991kcal/mol
Ligand efficiency (LE) -0.8211kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.751
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 400.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.79
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 31.49kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -111.70kcal/mol
Minimised FF energy -143.20kcal/mol

SASA & burial

✓ computed
SASA (unbound) 690.5Ų
Total solvent-accessible surface area of free ligand
BSA total 653.9Ų
Buried surface area upon binding
BSA apolar 483.0Ų
Hydrophobic contacts buried
BSA polar 170.8Ų
Polar contacts buried
Fraction buried 94.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 73.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1734.9Ų
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 588.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)