FAIRMol

Z56842317

Pose ID 9992 Compound 3315 Pose 506

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 Z56842317
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
43.8 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.69, Jaccard 0.47
Burial
77%
Hydrophobic fit
88%
Reason: strain 43.8 kcal/mol
strain ΔE 43.8 kcal/mol 1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.694 kcal/mol/HA) ✓ Good fit quality (FQ -6.47) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (77% SASA buried) ✓ Lipophilic contacts well-matched (88%) ✗ Extreme strain energy (43.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-18.732
kcal/mol
LE
-0.694
kcal/mol/HA
Fit Quality
-6.47
FQ (Leeson)
HAC
27
heavy atoms
MW
358
Da
LogP
3.96
cLogP
Strain ΔE
43.8 kcal/mol
SASA buried
77%
Lipo contact
88% BSA apolar/total
SASA unbound
630 Ų
Apolar buried
427 Ų

Interaction summary

HB 6 HY 24 PI 0 CLASH 1
Final rank2.984Score-18.732
Inter norm-0.963Intra norm0.269
Top1000noExcludedno
Contacts15H-bonds6
Artifact reasongeometry warning; 13 clashes; 2 protein clashes; high strain Δ 43.8
Residues
ALA209 ALA90 ASN208 GLY215 GLY66 LEU73 LYS211 LYS89 MET70 PRO187 PRO212 PRO213 TYR210 TYR69 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
Jaccard0.47RMSD-
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
421 2.9316708829612503 -0.946178 -23.0034 4 10 0 0.00 - - no Open
506 2.983788791233104 -0.962875 -18.7321 6 15 9 0.69 - - no Current
411 3.6075115201178534 -0.827665 -18.8819 5 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 -18.732kcal/mol
Ligand efficiency (LE) -0.6938kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.473
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 358.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.96
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 43.84kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 90.95kcal/mol
Minimised FF energy 47.11kcal/mol

SASA & burial

✓ computed
SASA (unbound) 629.7Ų
Total solvent-accessible surface area of free ligand
BSA total 484.0Ų
Buried surface area upon binding
BSA apolar 426.9Ų
Hydrophobic contacts buried
BSA polar 57.1Ų
Polar contacts buried
Fraction buried 76.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 88.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3057.5Ų
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 1518.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)