FAIRMol

Z19138088

Pose ID 9979 Compound 651 Pose 493

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 Z19138088
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
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
31.3 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.85, Jaccard 0.65
Burial
75%
Hydrophobic fit
72%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.581 kcal/mol/HA) ✓ Good fit quality (FQ -5.81) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (75% SASA buried) ✓ Lipophilic contacts well-matched (72%) ✗ Very high strain energy (31.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (18)
Score
-19.736
kcal/mol
LE
-0.581
kcal/mol/HA
Fit Quality
-5.81
FQ (Leeson)
HAC
34
heavy atoms
MW
474
Da
LogP
4.20
cLogP
Strain ΔE
31.3 kcal/mol
SASA buried
75%
Lipo contact
72% BSA apolar/total
SASA unbound
709 Ų
Apolar buried
385 Ų

Interaction summary

HB 7 HY 18 PI 0 CLASH 3

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

Final rank3.849Score-19.736
Inter norm-0.727Intra norm0.146
Top1000noExcludedno
Contacts15H-bonds7
Artifact reasongeometry warning; 18 clashes; 1 protein clash; high strain Δ 31.2
Residues
ALA209 ALA90 ARG74 ASN245 ASP71 GLY214 GLY215 LEU73 LYS211 LYS89 MET70 PHE83 PRO212 PRO213 VAL88

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 overlap11Native recall0.85
Jaccard0.65RMSD-
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
435 1.9301717756467363 -0.72761 -23.752 6 16 0 0.00 - - no Open
334 2.0263869649204853 -0.930222 -27.1777 3 21 0 0.00 - - no Open
395 2.0501377984473983 -0.787007 -19.7508 5 14 0 0.00 - - no Open
397 2.752858282721569 -0.800489 -23.9414 10 17 0 0.00 - - no Open
396 2.7601535713818413 -0.591573 -16.9942 5 14 0 0.00 - - no Open
381 2.9359635508409108 -0.793642 -19.3973 6 14 0 0.00 - - no Open
450 3.1523302745872246 -0.760382 -22.134 3 18 0 0.00 - - no Open
379 3.2188609293194674 -0.712407 -23.9203 8 17 0 0.00 - - no Open
418 3.4321465037133247 -0.816749 -26.4904 4 18 0 0.00 - - no Open
407 3.5524489581677203 -0.633858 -18.4382 7 15 0 0.00 - - no Open
370 3.7807067079968997 -0.979467 -27.5375 10 15 0 0.00 - - no Open
493 3.8486675627744926 -0.726729 -19.7364 7 15 11 0.85 - - no Current
366 4.10912935177256 -0.834923 -27.5266 11 20 0 0.00 - - no Open
336 4.160825631036783 -0.993151 -30.1156 5 15 0 0.00 - - no Open
464 5.0362869852581325 -0.819442 -25.2435 6 21 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 -19.736kcal/mol
Ligand efficiency (LE) -0.5805kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.808
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 474.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.20
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 31.29kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 85.89kcal/mol
Minimised FF energy 54.60kcal/mol

SASA & burial

✓ computed
SASA (unbound) 709.2Ų
Total solvent-accessible surface area of free ligand
BSA total 532.3Ų
Buried surface area upon binding
BSA apolar 385.1Ų
Hydrophobic contacts buried
BSA polar 147.2Ų
Polar contacts buried
Fraction buried 75.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 72.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2969.5Ų
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 1548.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)