FAIRMol

Z1820095916

Pose ID 10133 Compound 325 Pose 647

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 Z1820095916
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
32.0 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.69, Jaccard 0.50
Burial
76%
Hydrophobic fit
92%
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 (-0.788 kcal/mol/HA) ✓ Good fit quality (FQ -7.82) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (92%) ✗ Very high strain energy (32.0 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (2) ✗ Many internal clashes (11)
Score
-26.012
kcal/mol
LE
-0.788
kcal/mol/HA
Fit Quality
-7.82
FQ (Leeson)
HAC
33
heavy atoms
MW
460
Da
LogP
4.71
cLogP
Strain ΔE
32.0 kcal/mol
SASA buried
76%
Lipo contact
92% BSA apolar/total
SASA unbound
758 Ų
Apolar buried
530 Ų

Interaction summary

HB 1 HY 24 PI 0 CLASH 1
Final rank0.956Score-26.012
Inter norm-0.764Intra norm-0.024
Top1000noExcludedno
Contacts14H-bonds1
Artifact reasongeometry warning; 11 clashes; 2 protein contact clashes; high strain Δ 32.0
Residues
ALA209 ALA90 ARG74 ASN245 GLY214 LEU73 LYS211 LYS89 MET70 PRO187 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 overlap9Native recall0.69
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
647 0.9564035288325818 -0.763956 -26.0115 1 14 9 0.69 - - no Current
630 0.9938528999897127 -0.775974 -23.4958 2 16 0 0.00 - - no Open
632 1.6797989014706705 -0.781742 -26.0159 2 18 0 0.00 - - no Open
645 1.832386062812733 -0.807099 -25.9677 2 15 0 0.00 - - no Open
631 1.9864670153724107 -0.831354 -26.7758 1 19 0 0.00 - - no Open
654 3.496808521056955 -0.751494 -22.9985 3 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 -26.012kcal/mol
Ligand efficiency (LE) -0.7882kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.821
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 459.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.71
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 32.02kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -71.75kcal/mol
Minimised FF energy -103.78kcal/mol

SASA & burial

✓ computed
SASA (unbound) 758.1Ų
Total solvent-accessible surface area of free ligand
BSA total 576.8Ų
Buried surface area upon binding
BSA apolar 529.9Ų
Hydrophobic contacts buried
BSA polar 46.9Ų
Polar contacts buried
Fraction buried 76.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 91.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3163.7Ų
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 1534.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)