FAIRMol

KB_Leish_188

Pose ID 4190 Compound 356 Pose 127

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_188
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
44.2 kcal/mol
Protein clashes
0
Internal clashes
13
Native overlap
contact recall 0.79, Jaccard 0.75, H-bond role recall 0.00
Burial
73%
Hydrophobic fit
92%
Reason: 13 internal clashes, strain 44.2 kcal/mol
strain ΔE 44.2 kcal/mol 13 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.776 kcal/mol/HA) ✓ Good fit quality (FQ -7.95) ✓ Deep burial (73% SASA buried) ✓ Lipophilic contacts well-matched (92%) ✗ Extreme strain energy (44.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-28.726
kcal/mol
LE
-0.776
kcal/mol/HA
Fit Quality
-7.95
FQ (Leeson)
HAC
37
heavy atoms
MW
496
Da
LogP
3.01
cLogP
Strain ΔE
44.2 kcal/mol
SASA buried
73%
Lipo contact
92% BSA apolar/total
SASA unbound
818 Ų
Apolar buried
547 Ų

Interaction summary

HB 2 HY 24 PI 6 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 rank0.814Score-28.726
Inter norm-0.875Intra norm0.098
Top1000noExcludedno
Contacts16H-bonds2
Artifact reasongeometry warning; 13 clashes; 1 protein contact clash; high strain Δ 44.0
Residues
ARG14 ASP161 LEU208 LEU209 LYS114 MET213 NAP301 PHE171 PHE97 PRO210 PRO99 SER207 TRP221 TYR174 TYR98 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
Jaccard0.75RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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
127 0.8140398564052594 -0.874586 -28.7263 2 16 15 0.79 0.00 - no Current
165 0.8311245958721994 -1.00259 -33.4936 4 14 10 0.53 0.20 - no Open
151 1.4769018184469926 -0.791936 -27.0296 1 20 0 0.00 0.00 - no Open
166 2.121818512635562 -0.768058 -27.7147 2 19 0 0.00 0.00 - no Open
129 3.0930347412065764 -0.662156 -19.598 1 19 0 0.00 0.00 - no Open
164 4.871246049394679 -0.603727 -20.4705 4 14 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 -28.726kcal/mol
Ligand efficiency (LE) -0.7764kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.949
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 37HA

Physicochemical properties

Molecular weight 495.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.01
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 44.24kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 148.46kcal/mol
Minimised FF energy 104.22kcal/mol

SASA & burial

✓ computed
SASA (unbound) 817.8Ų
Total solvent-accessible surface area of free ligand
BSA total 593.8Ų
Buried surface area upon binding
BSA apolar 547.1Ų
Hydrophobic contacts buried
BSA polar 46.7Ų
Polar contacts buried
Fraction buried 72.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 92.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1865.6Ų
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 937.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)