FAIRMol

KB_HAT_152

Pose ID 10962 Compound 3884 Pose 119

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 KB_HAT_152
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 medium Native strong SASA done
Strain ΔE
24.4 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.83, Jaccard 0.43, H-bond role recall 0.00
Burial
77%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.576 kcal/mol/HA) ✓ Good fit quality (FQ -5.71) ✓ Deep burial (77% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ High strain energy (24.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-19.005
kcal/mol
LE
-0.576
kcal/mol/HA
Fit Quality
-5.71
FQ (Leeson)
HAC
33
heavy atoms
MW
490
Da
LogP
0.45
cLogP
Final rank
2.9687
rank score
Inter norm
-0.678
normalised
Contacts
21
H-bonds 4
Strain ΔE
24.4 kcal/mol
SASA buried
77%
Lipo contact
82% BSA apolar/total
SASA unbound
778 Ų
Apolar buried
494 Ų

Interaction summary

HBA 2 HY 8 PI 1 CLASH 3

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

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 overlap10Native recall0.83
Jaccard0.43RMSD-
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
119 2.96870141053498 -0.678376 -19.0054 4 21 10 0.83 0.00 - no Current
81 3.1744731026210147 -0.878137 -26.0181 8 17 0 0.00 0.00 - no Open
141 3.557216806895156 -0.709683 -21.4521 7 14 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 -19.005kcal/mol
Ligand efficiency (LE) -0.5759kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.714
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 490.0Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.45
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 24.42kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 182.60kcal/mol
Minimised FF energy 158.18kcal/mol

SASA & burial

✓ computed
SASA (unbound) 777.9Ų
Total solvent-accessible surface area of free ligand
BSA total 600.8Ų
Buried surface area upon binding
BSA apolar 494.4Ų
Hydrophobic contacts buried
BSA polar 106.4Ų
Polar contacts buried
Fraction buried 77.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6638.3Ų
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 2067.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)