FAIRMol

Z56174686

Pose ID 10063 Compound 4327 Pose 577

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T15
T. brucei TR (Dimer cleft site) T. brucei Dimer cleft site
Ligand Z56174686
PDB9IFF

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
35.9 kcal/mol
Protein clashes
0
Internal clashes
13
Native overlap
contact recall 0.62, Jaccard 0.42
Burial
76%
Hydrophobic fit
95%
Reason: 13 internal clashes
13 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.739 kcal/mol/HA) ✓ Good fit quality (FQ -6.90) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (95%) ✗ Very high strain energy (35.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-19.962
kcal/mol
LE
-0.739
kcal/mol/HA
Fit Quality
-6.90
FQ (Leeson)
HAC
27
heavy atoms
MW
360
Da
LogP
4.40
cLogP
Final rank
2.0534
rank score
Inter norm
-0.862
normalised
Contacts
14
H-bonds 3
Strain ΔE
35.9 kcal/mol
SASA buried
76%
Lipo contact
95% BSA apolar/total
SASA unbound
620 Ų
Apolar buried
447 Ų

Interaction summary

HBD 2 HY 9 PI 1 CLASH 0

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

No clash · clashes detected for this pose.

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap8Native recall0.62
Jaccard0.42RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

489 residues
Protein targetT15Atoms7420
Residues489Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:264; MET:204

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
577 2.05337254158618 -0.862057 -19.9616 3 14 8 0.62 - - 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 -19.962kcal/mol
Ligand efficiency (LE) -0.7393kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.898
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 360.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.40
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 35.90kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 71.13kcal/mol
Minimised FF energy 35.24kcal/mol

SASA & burial

✓ computed
SASA (unbound) 620.4Ų
Total solvent-accessible surface area of free ligand
BSA total 471.2Ų
Buried surface area upon binding
BSA apolar 447.0Ų
Hydrophobic contacts buried
BSA polar 24.2Ų
Polar contacts buried
Fraction buried 76.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 94.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3040.2Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1550.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)