FAIRMol

KB_Leish_34

Pose ID 4171 Compound 983 Pose 108

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T07
T. brucei PTR1 T. brucei
Ligand KB_Leish_34
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
24.5 kcal/mol
Protein clashes
5
Internal clashes
19
Native overlap
contact recall 0.79, Jaccard 0.71, H-bond role recall 0.40
Burial
84%
Hydrophobic fit
85%
Reason: 19 internal clashes
5 protein-contact clashes 19 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.935 kcal/mol/HA) ✓ Good fit quality (FQ -9.11) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (84% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ High strain energy (24.5 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Many internal clashes (19)
Score
-28.998
kcal/mol
LE
-0.935
kcal/mol/HA
Fit Quality
-9.11
FQ (Leeson)
HAC
31
heavy atoms
MW
418
Da
LogP
3.00
cLogP
Strain ΔE
24.5 kcal/mol
SASA buried
84%
Lipo contact
85% BSA apolar/total
SASA unbound
704 Ų
Apolar buried
503 Ų

Interaction summary

HB 7 HY 24 PI 5 CLASH 0

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.
Final rank1.833Score-28.998
Inter norm-0.995Intra norm0.059
Top1000noExcludedno
Contacts17H-bonds7
Artifact reasongeometry warning; 19 clashes; 5 protein contact clashes; 3 cofactor-context clashes; moderate strain Δ 24.5
Residues
ARG14 ASP161 CYS168 GLU217 LEU208 LEU209 MET163 MET213 NAP301 PHE171 PHE97 PRO210 PRO99 SER95 TRP221 TYR174 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 overlap15Native recall0.79
Jaccard0.71RMSD-
HB strict3Strict recall0.50
HB same residue+role2HB role recall0.40
HB same residue3HB residue recall0.60

Protein summary

275 residues
Protein targetT07Atoms3932
Residues275Chains3
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
142 1.7134112149889114 -1.03446 -29.5939 6 19 16 0.84 0.60 - no Open
108 1.832549972618827 -0.994641 -28.9981 7 17 15 0.79 0.40 - no Current
30 3.0354158862778213 -0.639517 -20.3913 3 14 0 0.00 0.00 - no Open
143 3.036003608320648 -0.844612 -23.4937 5 17 0 0.00 0.00 - no Open
26 3.204939574247354 -0.888832 -28.2398 6 19 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 -28.998kcal/mol
Ligand efficiency (LE) -0.9354kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.113
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 418.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.00
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 24.51kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -157.75kcal/mol
Minimised FF energy -182.26kcal/mol

SASA & burial

✓ computed
SASA (unbound) 703.8Ų
Total solvent-accessible surface area of free ligand
BSA total 591.5Ų
Buried surface area upon binding
BSA apolar 503.3Ų
Hydrophobic contacts buried
BSA polar 88.2Ų
Polar contacts buried
Fraction buried 84.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1736.7Ų
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 922.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)