FAIRMol

KB_Leish_20

Pose ID 4882 Compound 463 Pose 141

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_20
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
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
34.5 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.63, Jaccard 0.48, H-bond role recall 0.40
Burial
89%
Hydrophobic fit
77%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.854 kcal/mol/HA) ✓ Good fit quality (FQ -8.39) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (89% SASA buried) ✓ Lipophilic contacts well-matched (77%) ✗ Very high strain energy (34.5 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Many internal clashes (11)
Score
-27.311
kcal/mol
LE
-0.854
kcal/mol/HA
Fit Quality
-8.39
FQ (Leeson)
HAC
32
heavy atoms
MW
467
Da
LogP
4.27
cLogP
Strain ΔE
34.5 kcal/mol
SASA buried
89%
Lipo contact
77% BSA apolar/total
SASA unbound
755 Ų
Apolar buried
515 Ų

Interaction summary

HB 7 HY 24 PI 3 CLASH 3

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 rank0.956Score-27.311
Inter norm-1.068Intra norm0.214
Top1000noExcludedno
Contacts18H-bonds7
Artifact reasongeometry warning; 11 clashes; 5 protein contact clashes; high strain Δ 34.5
Residues
ARG14 ASN175 ASP161 CYS168 GLY205 LEU208 LEU209 LYS13 MET163 NAP301 PHE171 PHE97 PRO167 PRO210 TYR174 VAL164 VAL206 VAL211

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
Jaccard0.48RMSD-
HB strict3Strict recall0.50
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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
141 0.9555486624199901 -1.06796 -27.3113 7 18 12 0.63 0.40 - no Current
150 2.692334134189634 -0.857115 -24.5254 7 19 0 0.00 0.00 - no Open
139 3.5857653823295363 -0.813301 -22.4093 5 19 0 0.00 0.00 - no Open
87 4.016832404152804 -1.04643 -21.5366 9 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 -27.311kcal/mol
Ligand efficiency (LE) -0.8535kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.393
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 466.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.27
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 34.54kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 56.69kcal/mol
Minimised FF energy 22.15kcal/mol

SASA & burial

✓ computed
SASA (unbound) 754.7Ų
Total solvent-accessible surface area of free ligand
BSA total 670.3Ų
Buried surface area upon binding
BSA apolar 514.9Ų
Hydrophobic contacts buried
BSA polar 155.4Ų
Polar contacts buried
Fraction buried 88.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 76.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1673.2Ų
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 949.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)