FAIRMol

ulfkktlib_979

Pose ID 11056 Compound 4332 Pose 213

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T17
T. brucei TR (Doorstop site) T. brucei Doorstop site
Ligand ulfkktlib_979
PDB5S9T

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
14.6 kcal/mol
Protein clashes
0
Internal clashes
12
Native overlap
contact recall 0.75, Jaccard 0.39, H-bond role recall 0.00
Burial
84%
Hydrophobic fit
80%
Reason: 12 internal clashes
12 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.560 kcal/mol/HA) ✓ Good fit quality (FQ -5.50) ✓ Good H-bonds (4 bonds) ✓ Deep burial (84% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ Moderate strain (14.6 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-17.910
kcal/mol
LE
-0.560
kcal/mol/HA
Fit Quality
-5.50
FQ (Leeson)
HAC
32
heavy atoms
MW
432
Da
LogP
6.79
cLogP
Strain ΔE
14.6 kcal/mol
SASA buried
84%
Lipo contact
80% BSA apolar/total
SASA unbound
721 Ų
Apolar buried
483 Ų

Interaction summary

HB 4 HY 22 PI 4 CLASH 0

HB · H-bonds

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

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.
Final rank2.022Score-17.910
Inter norm-0.731Intra norm0.171
Top1000noExcludedno
Contacts20H-bonds4
Artifact reasongeometry warning; 12 clashes; 1 protein clash
Residues
ARG228 ARG287 CYS375 GLY196 GLY197 GLY229 GLY286 GLY376 ILE199 ILE226 LEU227 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 TYR221 VAL362

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap9Native recall0.75
Jaccard0.39RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

1033 residues
Protein targetT17Atoms15160
Residues1033Chains2
Residue summaryVAL:1536; LEU:1387; LYS:1386; ILE:1064; GLU:900; THR:868; ARG:816; PHE:800; ALA:780; ASN:700; PRO:686; GLY:672; SER:616; TYR:588; ASP:528; MET:408

Receptor context

2 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 2 Excluded HETATM 0
Kept cofactors / ions
A:FAD501 B:FAD501

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
213 2.0220014799275208 -0.730514 -17.9103 4 20 9 0.75 0.00 - no Current
314 2.156500967910011 -0.733771 -19.5973 1 13 0 0.00 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 -17.910kcal/mol
Ligand efficiency (LE) -0.5597kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.504
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 431.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 6.79
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 14.64kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 91.49kcal/mol
Minimised FF energy 76.85kcal/mol

SASA & burial

✓ computed
SASA (unbound) 720.9Ų
Total solvent-accessible surface area of free ligand
BSA total 607.3Ų
Buried surface area upon binding
BSA apolar 482.9Ų
Hydrophobic contacts buried
BSA polar 124.4Ų
Polar contacts buried
Fraction buried 84.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6564.6Ų
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 8063.1Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 2086.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)