FAIRMol

KB_HAT_125

Pose ID 9591 Compound 83 Pose 105

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T15
T. brucei TR (Dimer cleft site) T. brucei Dimer cleft site
Ligand KB_HAT_125
PDB9IFF

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
29.9 kcal/mol
Protein clashes
0
Internal clashes
13
Native overlap
contact recall 0.77, Jaccard 0.53
Burial
81%
Hydrophobic fit
87%
Reason: 13 internal clashes
13 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.991 kcal/mol/HA) ✓ Good fit quality (FQ -9.35) ✓ Good H-bonds (3 bonds) ✓ Deep burial (81% SASA buried) ✓ Lipophilic contacts well-matched (87%) ✗ High strain energy (29.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-27.740
kcal/mol
LE
-0.991
kcal/mol/HA
Fit Quality
-9.35
FQ (Leeson)
HAC
28
heavy atoms
MW
396
Da
LogP
4.29
cLogP
Strain ΔE
29.9 kcal/mol
SASA buried
81%
Lipo contact
87% BSA apolar/total
SASA unbound
708 Ų
Apolar buried
494 Ų

Interaction summary

HB 3 HY 24 PI 1 CLASH 0
Final rank2.240Score-27.740
Inter norm-0.872Intra norm-0.118
Top1000noExcludedno
Contacts16H-bonds3
Artifact reasongeometry warning; 13 clashes; 1 protein clash; moderate strain Δ 29.9
Residues
ALA209 ALA67 ALA90 ARG74 GLY66 GLY85 LEU73 LYS211 LYS89 MET70 PHE83 PRO212 PRO213 TYR210 TYR69 VAL88

Protein summary

489 residues
Protein targetT15Atoms7420
Residues489Chains1
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:264; MET:204

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap10Native recall0.77
Jaccard0.53RMSD-
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

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.

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
134 0.8787301390419879 -0.927371 -30.4255 4 16 0 0.00 - - no Open
132 1.362090692333166 -0.696089 -21.8705 5 10 0 0.00 - - no Open
56 2.11446041467362 -0.89143 -27.6672 10 15 0 0.00 - - no Open
105 2.2397610215021095 -0.872416 -27.7402 3 16 10 0.77 - - no Current
89 2.323411644243609 -0.98876 -30.0238 10 18 0 0.00 - - no Open
94 2.6000090607976754 -1.37236 -42.7819 9 19 0 0.00 - - no Open
105 2.9296044097954415 -0.755315 -23.9764 6 15 0 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 -27.740kcal/mol
Ligand efficiency (LE) -0.9907kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.353
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 395.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.29
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.91kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -79.93kcal/mol
Minimised FF energy -109.84kcal/mol

SASA & burial

✓ computed
SASA (unbound) 707.8Ų
Total solvent-accessible surface area of free ligand
BSA total 571.0Ų
Buried surface area upon binding
BSA apolar 494.5Ų
Hydrophobic contacts buried
BSA polar 76.5Ų
Polar contacts buried
Fraction buried 80.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 86.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3090.9Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1526.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)