FAIRMol

KB_HAT_101

Pose ID 4864 Compound 3129 Pose 123

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T08
T. brucei PTR1 T. brucei
Ligand KB_HAT_101
PDB6RX6

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
43.1 kcal/mol
Protein clashes
7
Internal clashes
9
Native overlap
contact recall 0.68, Jaccard 0.57, H-bond role recall 0.60
Burial
97%
Hydrophobic fit
83%
Reason: 9 internal clashes, strain 43.1 kcal/mol
strain ΔE 43.1 kcal/mol 7 protein-contact clashes 9 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.939 kcal/mol/HA) ✓ Good fit quality (FQ -8.76) ✓ Strong H-bond network (13 bonds) ✓ Deep burial (97% SASA buried) ✓ Lipophilic contacts well-matched (83%) ✗ Extreme strain energy (43.1 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (5)
Score
-25.348
kcal/mol
LE
-0.939
kcal/mol/HA
Fit Quality
-8.76
FQ (Leeson)
HAC
27
heavy atoms
MW
369
Da
LogP
2.62
cLogP
Strain ΔE
43.1 kcal/mol
SASA buried
97%
Lipo contact
83% BSA apolar/total
SASA unbound
654 Ų
Apolar buried
529 Ų

Interaction summary

HB 13 HY 24 PI 3 CLASH 9

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

Final rank2.223Score-25.348
Inter norm-1.302Intra norm0.363
Top1000noExcludedno
Contacts17H-bonds13
Artifact reasongeometry warning; 5 clashes; 1 protein clash; 6 cofactor-context clashes; high strain Δ 42.9
Residues
ARG14 ASN175 ASP161 CYS168 LEU208 LEU209 LYS178 MET163 NAP301 PHE171 PHE97 PRO167 PRO210 TRP221 TYR174 VAL164 VAL206

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
NameTbPTR1_cW_6RX6_ReadyContacts19
PoseOpen native poseHB0
IFP residues
ARG14 ASP161 CYS168 GLY205 LEU208 LEU209 LYS178 MET213 NAP301 PHE171 PHE97 PRO210 PRO99 SER207 SER95 TRP221 TYR174 TYR98 VAL206
Current overlap13Native recall0.68
Jaccard0.57RMSD-
HB strict3Strict recall0.50
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.60

Protein summary

258 residues
Protein targetT08Atoms3881
Residues258Chains2
Residue summaryLEU:437; VAL:433; ALA:361; ARG:288; ILE:266; GLU:210; LYS:198; SER:198; ASN:182; THR:154; GLN:153; PHE:140; PRO:140; TYR:126; GLY:112; HIS:103

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:NAP301

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
123 2.222705219713045 -1.30169 -25.3475 13 17 13 0.68 0.60 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -25.348kcal/mol
Ligand efficiency (LE) -0.9388kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.759
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 369.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.62
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 43.07kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -64.84kcal/mol
Minimised FF energy -107.92kcal/mol

SASA & burial

✓ computed
SASA (unbound) 654.1Ų
Total solvent-accessible surface area of free ligand
BSA total 636.1Ų
Buried surface area upon binding
BSA apolar 528.9Ų
Hydrophobic contacts buried
BSA polar 107.2Ų
Polar contacts buried
Fraction buried 97.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 83.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1682.0Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 916.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)