FAIRMol

KB_HAT_18

Pose ID 9579 Compound 1682 Pose 93

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_18
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
Weak or marginal quality
Binding strong Geometry medium Native mixed SASA done
Strain ΔE
15.3 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.46, Jaccard 0.33
Burial
70%
Hydrophobic fit
81%
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 (-0.964 kcal/mol/HA) ✓ Good fit quality (FQ -8.88) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (70% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ Moderate strain (15.3 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (8) ✗ Many internal clashes (10)
Score
-25.051
kcal/mol
LE
-0.964
kcal/mol/HA
Fit Quality
-8.88
FQ (Leeson)
HAC
26
heavy atoms
MW
377
Da
LogP
2.13
cLogP
Strain ΔE
15.3 kcal/mol
SASA buried
70%
Lipo contact
81% BSA apolar/total
SASA unbound
638 Ų
Apolar buried
358 Ų

Interaction summary

HB 6 HY 17 PI 1 CLASH 3
Final rank1.532Score-25.051
Inter norm-0.954Intra norm-0.010
Top1000noExcludedno
Contacts11H-bonds6
Artifact reasongeometry warning; 10 clashes; 8 protein contact clashes
Residues
ALA77 ARG74 ASN245 ASP71 GLU82 GLY85 LEU73 MET70 PHE83 TRP81 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 overlap6Native recall0.46
Jaccard0.33RMSD-
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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
55 0.5243665770310006 -0.920154 -21.7702 5 13 0 0.00 - - no Open
93 1.53189922327258 -0.953717 -25.0514 6 11 6 0.46 - - no Current
90 3.2728827443071546 -0.991054 -25.8828 8 15 0 0.00 - - no Open
80 4.82559950042143 -1.28946 -35.2953 10 21 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 -25.051kcal/mol
Ligand efficiency (LE) -0.9635kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.877
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 376.9Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.13
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 15.28kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -93.54kcal/mol
Minimised FF energy -108.83kcal/mol

SASA & burial

✓ computed
SASA (unbound) 638.5Ų
Total solvent-accessible surface area of free ligand
BSA total 444.2Ų
Buried surface area upon binding
BSA apolar 358.2Ų
Hydrophobic contacts buried
BSA polar 86.0Ų
Polar contacts buried
Fraction buried 69.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3022.1Ų
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 1531.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)