FAIRMol

Z56789391

Pose ID 9981 Compound 585 Pose 495

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 Z56789391
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 high Native strong SASA done
Strain ΔE
21.8 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.62, Jaccard 0.50
Burial
72%
Hydrophobic fit
71%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.999 kcal/mol/HA) ✓ Good fit quality (FQ -8.81) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (71%) ✗ High strain energy (21.8 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-22.973
kcal/mol
LE
-0.999
kcal/mol/HA
Fit Quality
-8.81
FQ (Leeson)
HAC
23
heavy atoms
MW
328
Da
LogP
2.78
cLogP
Strain ΔE
21.8 kcal/mol
SASA buried
72%
Lipo contact
71% BSA apolar/total
SASA unbound
534 Ų
Apolar buried
276 Ų

Interaction summary

HB 9 HY 16 PI 0 CLASH 1
Final rank2.850Score-22.973
Inter norm-1.066Intra norm0.067
Top1000noExcludedno
Contacts11H-bonds9
Artifact reasongeometry warning; 9 clashes; 2 protein clashes; moderate strain Δ 21.8
Residues
ALA209 ALA90 GLY214 GLY215 LYS211 LYS89 MET70 PRO212 PRO213 TYR210 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
Jaccard0.50RMSD-
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

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

HY · Hydrophobic contacts

CLASH · Clashes

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
438 1.5935778613322662 -1.05764 -23.7128 7 15 0 0.00 - - no Open
383 1.8986792723681687 -1.0428 -22.2131 1 13 0 0.00 - - no Open
495 2.850161246790037 -1.0661 -22.9728 9 11 8 0.62 - - no Current
370 3.4477172158172777 -1.11623 -21.359 11 12 0 0.00 - - no Open
466 3.509598316790688 -1.13775 -23.8142 8 15 0 0.00 - - no Open
469 4.372722701036715 -1.15166 -25.5918 8 11 0 0.00 - - no Open
420 4.56124354577558 -1.22661 -24.6376 10 11 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 -22.973kcal/mol
Ligand efficiency (LE) -0.9988kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.815
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 328.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.78
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 21.84kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 106.82kcal/mol
Minimised FF energy 84.98kcal/mol

SASA & burial

✓ computed
SASA (unbound) 533.9Ų
Total solvent-accessible surface area of free ligand
BSA total 387.2Ų
Buried surface area upon binding
BSA apolar 275.9Ų
Hydrophobic contacts buried
BSA polar 111.3Ų
Polar contacts buried
Fraction buried 72.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 71.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2856.2Ų
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 1529.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)