FAIRMol

Z25039863

Pose ID 4045 Compound 2561 Pose 659

DB fairmolDocking 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 Z25039863
PDB8RHT

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
63.3 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.86, Jaccard 0.75, H-bond role recall 0.50
Burial
96%
Hydrophobic fit
66%
Reason: strain 63.3 kcal/mol
strain ΔE 63.3 kcal/mol 4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.615 kcal/mol/HA) ✓ Good fit quality (FQ -5.87) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (96% SASA buried) ✓ Lipophilic contacts well-matched (66%) ✗ Extreme strain energy (63.3 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (7) ✗ Many internal clashes (11)
Score
-17.832
kcal/mol
LE
-0.615
kcal/mol/HA
Fit Quality
-5.87
FQ (Leeson)
HAC
29
heavy atoms
MW
404
Da
LogP
1.41
cLogP
Strain ΔE
63.3 kcal/mol
SASA buried
96%
Lipo contact
66% BSA apolar/total
SASA unbound
661 Ų
Apolar buried
420 Ų

Interaction summary

HB 7 HY 24 PI 3 CLASH 4

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

Final rank1.639Score-17.832
Inter norm-0.847Intra norm0.221
Top1000noExcludedno
Contacts21H-bonds7
Artifact reasongeometry warning; 11 clashes; 7 protein contact clashes; high strain Δ 59.1
Residues
ALA34 ARG100 ARG59 ASP54 HIS182 ILE160 ILE47 LEU90 LEU97 MET55 MET82 NDP301 PHE58 PHE94 PRO91 THR184 THR86 TYR166 TYR57 VAL32 VAL33

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 overlap18Native recall0.86
Jaccard0.75RMSD-
HB strict2Strict recall0.40
HB same residue+role2HB role recall0.50
HB same residue3HB residue recall0.75

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
659 1.6388494137240404 -0.847193 -17.832 7 21 18 0.86 0.50 - 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 -17.832kcal/mol
Ligand efficiency (LE) -0.6149kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.870
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 404.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.41
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 63.30kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 149.65kcal/mol
Minimised FF energy 86.35kcal/mol

SASA & burial

✓ computed
SASA (unbound) 661.0Ų
Total solvent-accessible surface area of free ligand
BSA total 636.5Ų
Buried surface area upon binding
BSA apolar 420.1Ų
Hydrophobic contacts buried
BSA polar 216.5Ų
Polar contacts buried
Fraction buried 96.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 66.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1672.0Ų
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 577.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)