FAIRMol

Z31449923

Pose ID 4024 Compound 2497 Pose 638

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 Z31449923
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
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
34.3 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.62, Jaccard 0.52, H-bond role recall 0.00
Burial
95%
Hydrophobic fit
83%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.696 kcal/mol/HA) ✓ Good fit quality (FQ -6.33) ✓ Deep burial (95% SASA buried) ✓ Lipophilic contacts well-matched (83%) ✗ Very high strain energy (34.3 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Many internal clashes (10)
Score
-17.408
kcal/mol
LE
-0.696
kcal/mol/HA
Fit Quality
-6.33
FQ (Leeson)
HAC
25
heavy atoms
MW
342
Da
LogP
2.31
cLogP
Final rank
1.1644
rank score
Inter norm
-0.907
normalised
Contacts
17
H-bonds 1
Strain ΔE
34.3 kcal/mol
SASA buried
95%
Lipo contact
83% BSA apolar/total
SASA unbound
631 Ų
Apolar buried
498 Ų

Interaction summary

HBA 1 HY 9 PI 3 CLASH 3

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 1.

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: 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 overlap13Native recall0.62
Jaccard0.52RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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
638 1.1644172923624325 -0.907424 -17.4077 1 17 13 0.62 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 -17.408kcal/mol
Ligand efficiency (LE) -0.6963kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.330
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 25HA

Physicochemical properties

Molecular weight 342.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.31
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 34.26kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 51.15kcal/mol
Minimised FF energy 16.89kcal/mol

SASA & burial

✓ computed
SASA (unbound) 631.4Ų
Total solvent-accessible surface area of free ligand
BSA total 597.6Ų
Buried surface area upon binding
BSA apolar 497.8Ų
Hydrophobic contacts buried
BSA polar 99.8Ų
Polar contacts buried
Fraction buried 94.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 83.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1760.4Ų
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 580.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)