FAIRMol

KB_Leish_40

Pose ID 4888 Compound 400 Pose 147

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_Leish_40
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
47.6 kcal/mol
Protein clashes
0
Internal clashes
1
Native overlap
contact recall 0.63, Jaccard 0.52, H-bond role recall 0.20
Burial
81%
Hydrophobic fit
89%
Reason: strain 47.6 kcal/mol
strain ΔE 47.6 kcal/mol
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.924 kcal/mol/HA) ✓ Good fit quality (FQ -8.82) ✓ Good H-bonds (5 bonds) ✓ Deep burial (81% SASA buried) ✓ Lipophilic contacts well-matched (89%) ✗ Extreme strain energy (47.6 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-26.797
kcal/mol
LE
-0.924
kcal/mol/HA
Fit Quality
-8.82
FQ (Leeson)
HAC
29
heavy atoms
MW
388
Da
LogP
2.47
cLogP
Strain ΔE
47.6 kcal/mol
SASA buried
81%
Lipo contact
89% BSA apolar/total
SASA unbound
757 Ų
Apolar buried
547 Ų

Interaction summary

HB 5 HY 24 PI 5 CLASH 1
Final rank2.522Score-26.797
Inter norm-1.173Intra norm0.249
Top1000noExcludedno
Contacts16H-bonds5
Artifact reasongeometry warning; 9 clashes; 2 protein clashes; 2 cofactor-context clashes; high strain Δ 47.5
Residues
ALA170 ARG14 CYS168 GLU217 LEU208 LEU209 MET169 MET213 NAP301 PHE171 PHE97 PRO210 SER207 TRP221 VAL206 VAL211

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

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 overlap12Native recall0.63
Jaccard0.52RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
HB same residue2HB residue recall0.40

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
155 2.3507399186119113 -0.924223 -26.6674 4 22 0 0.00 0.00 - no Open
151 2.4780143162078496 -0.748644 -18.6901 8 12 0 0.00 0.00 - no Open
147 2.521922647015896 -1.17277 -26.7971 5 16 12 0.63 0.20 - no Current
117 2.522623868849702 -1.0011 -24.7836 6 20 0 0.00 0.00 - no Open
90 2.7270695040419697 -1.20729 -38.0707 8 24 0 0.00 0.00 - no Open
117 2.8637611573919117 -0.895553 -29.8517 9 17 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 -26.797kcal/mol
Ligand efficiency (LE) -0.9240kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.821
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 388.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.47
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 47.65kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 56.48kcal/mol
Minimised FF energy 8.84kcal/mol

SASA & burial

✓ computed
SASA (unbound) 757.0Ų
Total solvent-accessible surface area of free ligand
BSA total 613.5Ų
Buried surface area upon binding
BSA apolar 547.0Ų
Hydrophobic contacts buried
BSA polar 66.5Ų
Polar contacts buried
Fraction buried 81.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1789.7Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 928.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)