FAIRMol

TC491

Pose ID 9860 Compound 552 Pose 374

DB SELECTIONDocking 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 TC491
PDB9IFF

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
40.3 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.62, Jaccard 0.40
Burial
64%
Hydrophobic fit
83%
Reason: no major geometry red flags detected
2 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.517 kcal/mol/HA) ✓ Good fit quality (FQ -5.29) ✓ Strong H-bond network (6 bonds) ✓ Good burial (64% SASA buried) ✓ Lipophilic contacts well-matched (83%) ✗ Extreme strain energy (40.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (18)
Score
-19.125
kcal/mol
LE
-0.517
kcal/mol/HA
Fit Quality
-5.29
FQ (Leeson)
HAC
37
heavy atoms
MW
501
Da
LogP
4.88
cLogP
Strain ΔE
40.3 kcal/mol
SASA buried
64%
Lipo contact
83% BSA apolar/total
SASA unbound
822 Ų
Apolar buried
437 Ų

Interaction summary

HB 6 HY 23 PI 1 CLASH 2
Final rank4.349Score-19.125
Inter norm-0.651Intra norm0.134
Top1000noExcludedno
Contacts15H-bonds6
Artifact reasongeometry warning; 18 clashes; 2 protein clashes; high strain Δ 40.3
Residues
ALA244 ALA77 ARG74 ASN208 ASN245 GLU82 GLY246 GLY85 LEU73 LYS211 MET70 PHE83 SER76 TRP81 VAL88

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

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
Jaccard0.40RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

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
294 1.245508240700725 -0.728849 -25.9836 5 20 0 0.00 - - no Open
346 1.930187225320806 -0.655486 -21.8232 3 17 0 0.00 - - no Open
313 3.2272343925835325 -0.816086 -23.0339 7 22 0 0.00 - - no Open
293 3.3208224858699698 -0.781481 -24.4604 6 17 0 0.00 - - no Open
290 3.749228973927113 -0.629948 -20.9201 5 12 0 0.00 - - no Open
194 3.909806676956081 -0.745338 -25.6544 8 15 0 0.00 - - no Open
374 4.34931664373597 -0.650967 -19.125 6 15 8 0.62 - - no Current
179 5.697827032796828 -0.75975 -24.0093 14 18 0 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 -19.125kcal/mol
Ligand efficiency (LE) -0.5169kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.292
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 37HA

Physicochemical properties

Molecular weight 500.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.88
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 40.29kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 140.52kcal/mol
Minimised FF energy 100.23kcal/mol

SASA & burial

✓ computed
SASA (unbound) 821.8Ų
Total solvent-accessible surface area of free ligand
BSA total 524.5Ų
Buried surface area upon binding
BSA apolar 437.3Ų
Hydrophobic contacts buried
BSA polar 87.2Ų
Polar contacts buried
Fraction buried 63.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 83.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3168.1Ų
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 1539.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)