FAIRMol

KB_HAT_185

Pose ID 10967 Compound 417 Pose 124

DB SELECTIONDocking 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 KB_HAT_185
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
Weak or marginal quality
Binding strong Geometry high Native strong SASA done
Strain ΔE
21.6 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.67, Jaccard 0.32, H-bond role recall 0.00
Burial
86%
Hydrophobic fit
86%
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 (-0.817 kcal/mol/HA) ✓ Good fit quality (FQ -7.53) ✓ Good H-bonds (5 bonds) ✓ Deep burial (86% SASA buried) ✓ Lipophilic contacts well-matched (86%) ✗ High strain energy (21.6 kcal/mol) ✗ Geometry warnings
Score
-21.240
kcal/mol
LE
-0.817
kcal/mol/HA
Fit Quality
-7.53
FQ (Leeson)
HAC
26
heavy atoms
MW
376
Da
LogP
-2.91
cLogP
Strain ΔE
21.6 kcal/mol
SASA buried
86%
Lipo contact
86% BSA apolar/total
SASA unbound
677 Ų
Apolar buried
498 Ų

Interaction summary

HB 5 HY 24 PI 2 CLASH 1
Final rank1.488Score-21.240
Inter norm-0.950Intra norm0.133
Top1000noExcludedno
Contacts21H-bonds5
Artifact reasongeometry warning; 4 clashes; 1 protein clash; moderate strain Δ 21.6
Residues
ALA284 ALA363 ARG287 CYS375 FAD501 GLY197 GLY229 GLY286 GLY376 HIS428 ILE199 ILE285 LEU332 LEU334 MET333 PHE198 PHE230 SER200 SER364 THR374 VAL362

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

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 overlap8Native recall0.67
Jaccard0.32RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue1HB residue recall1.00

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
124 1.4877473814898854 -0.950138 -21.24 5 21 8 0.67 0.00 - no Current
92 1.603037398703956 -0.921814 -22.1713 5 19 0 0.00 0.00 - no Open
80 1.8166958470318022 -1.05527 -22.9902 9 22 0 0.00 0.00 - no Open
110 1.985015103021289 -0.998783 -18.1972 7 16 0 0.00 0.00 - no Open
143 2.4259511102747977 -1.18883 -26.4653 8 17 0 0.00 0.00 - no Open
115 2.775094337228209 -0.851435 -20.1478 6 11 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 -21.240kcal/mol
Ligand efficiency (LE) -0.8169kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.527
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 375.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) -2.91
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 21.56kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -171.00kcal/mol
Minimised FF energy -192.57kcal/mol

SASA & burial

✓ computed
SASA (unbound) 677.3Ų
Total solvent-accessible surface area of free ligand
BSA total 580.2Ų
Buried surface area upon binding
BSA apolar 498.2Ų
Hydrophobic contacts buried
BSA polar 82.0Ų
Polar contacts buried
Fraction buried 85.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6587.6Ų
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 2058.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)