FAIRMol

KB_HAT_24

Pose ID 7524 Compound 557 Pose 72

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T12
T. brucei R5P T. brucei
Ligand KB_HAT_24
PDB6FXS

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
34.1 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 1.00, Jaccard 0.76, H-bond role recall 0.50
Burial
79%
Hydrophobic fit
73%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.641 kcal/mol/HA) ✓ Good fit quality (FQ -6.46) ✓ Strong H-bond network (11 bonds) ✓ Deep burial (79% SASA buried) ✓ Lipophilic contacts well-matched (73%) ✗ Very high strain energy (34.1 kcal/mol) ✗ Geometry warnings ✗ Severe protein-contact clashes (12) ✗ Many internal clashes (16)
Score
-22.434
kcal/mol
LE
-0.641
kcal/mol/HA
Fit Quality
-6.46
FQ (Leeson)
HAC
35
heavy atoms
MW
491
Da
LogP
3.33
cLogP
Strain ΔE
34.1 kcal/mol
SASA buried
79%
Lipo contact
73% BSA apolar/total
SASA unbound
772 Ų
Apolar buried
444 Ų

Interaction summary

HB 11 HY 18 PI 2 CLASH 6
Final rank2.898Score-22.434
Inter norm-0.864Intra norm0.223
Top1000noExcludedno
Contacts21H-bonds11
Artifact reasongeometry warning; 16 clashes; 12 protein contact clashes; high strain Δ 34.0
Residues
ARG140 ARG144 ASN106 HIS105 HIS141 MET101 TYR97 ARG116 ARG46 ASP13 ASP48 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49 VAL47

Protein summary

302 residues
Protein targetT12Atoms4598
Residues302Chains2
Residue summaryARG:576; ILE:456; VAL:448; GLU:360; ALA:340; LEU:304; TYR:252; HIS:204; PRO:196; THR:196; GLY:182; LYS:176; ASP:168; PHE:160; MET:153; SER:121

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:CSD72

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6FXSContacts16
PoseOpen native poseHB0
IFP residues
ARG140 ARG144 ASN106 HIS105 HIS141 ARG46 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49
Current overlap16Native recall1.00
Jaccard0.76RMSD-
HB strict7Strict recall0.58
HB same residue+role5HB role recall0.50
HB same residue6HB residue recall0.60

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
56 1.141485241918407 -0.716303 -22.4125 1 17 0 0.00 0.00 - no Open
72 2.8975975898799016 -0.86444 -22.4337 11 21 16 1.00 0.50 - no Current
115 3.2669415162115714 -0.815922 -28.6717 3 19 0 0.00 0.00 - no Open
108 3.806235438234106 -0.795357 -26.5783 4 21 0 0.00 0.00 - no Open
66 5.077675768715562 -0.959199 -30.87 8 20 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 -22.434kcal/mol
Ligand efficiency (LE) -0.6410kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.465
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 35HA

Physicochemical properties

Molecular weight 490.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.33
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 34.09kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 62.88kcal/mol
Minimised FF energy 28.80kcal/mol

SASA & burial

✓ computed
SASA (unbound) 771.8Ų
Total solvent-accessible surface area of free ligand
BSA total 610.7Ų
Buried surface area upon binding
BSA apolar 443.7Ų
Hydrophobic contacts buried
BSA polar 167.1Ų
Polar contacts buried
Fraction buried 79.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 72.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2275.7Ų
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 2454.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 770.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)