FAIRMol

OSA_Lib_75

Pose ID 10345 Compound 4561 Pose 180

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T16
T. brucei TR (Dimer interface (site 2)) T. brucei Dimer interface (site 2)
Ligand OSA_Lib_75
PDB6RB5

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
15.5 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.58, Jaccard 0.37
Burial
73%
Hydrophobic fit
100%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.802 kcal/mol/HA) ✓ Good fit quality (FQ -7.66) ✓ Deep burial (73% SASA buried) ✓ Lipophilic contacts well-matched (100%) ✗ Moderate strain (15.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-23.268
kcal/mol
LE
-0.802
kcal/mol/HA
Fit Quality
-7.66
FQ (Leeson)
HAC
29
heavy atoms
MW
430
Da
LogP
4.82
cLogP
Strain ΔE
15.5 kcal/mol
SASA buried
73%
Lipo contact
100% BSA apolar/total
SASA unbound
684 Ų
Apolar buried
496 Ų

Interaction summary

HB 1 HY 24 PI 0 CLASH 4
Final rank2.517Score-23.268
Inter norm-0.803Intra norm0.001
Top1000noExcludedno
Contacts14H-bonds1
Artifact reasongeometry warning; 12 clashes; 1 protein clash
Residues
ALA209 ALA90 GLY214 GLY215 LEU73 LYS211 LYS89 MET70 PRO187 PRO212 PRO213 TYR210 TYR69 VAL88

Protein summary

493 residues
Protein targetT16Atoms7551
Residues493Chains1
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:276; MET:221

Receptor context

1 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 1 Excluded HETATM 0
Kept cofactors / ions
A:FAD501

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6RB5Contacts12
PoseOpen native poseHB0
IFP residues
ALA90 ARG74 GLY85 LEU73 LYS89 MET70 PHE83 PRO212 PRO213 SER86 SER87 VAL88
Current overlap7Native recall0.58
Jaccard0.37RMSD-
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
180 2.5168690262179716 -0.803186 -23.2683 1 14 7 0.58 - - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -23.268kcal/mol
Ligand efficiency (LE) -0.8024kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.659
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 430.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.82
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 15.49kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 94.70kcal/mol
Minimised FF energy 79.22kcal/mol

SASA & burial

✓ computed
SASA (unbound) 683.9Ų
Total solvent-accessible surface area of free ligand
BSA total 496.6Ų
Buried surface area upon binding
BSA apolar 496.3Ų
Hydrophobic contacts buried
BSA polar 0.3Ų
Polar contacts buried
Fraction buried 72.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 99.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3268.2Ų
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 4076.6Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1492.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)