FAIRMol

KB_chagas_92

Pose ID 8236 Compound 1351 Pose 106

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T13
T. brucei ODC (Active site) T. brucei Active site
Ligand KB_chagas_92
PDB1F3T

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
43.2 kcal/mol
Protein clashes
7
Internal clashes
7
Native overlap
contact recall 0.79, Jaccard 0.62, H-bond role recall 0.57
Burial
82%
Hydrophobic fit
83%
Reason: 7 internal clashes, strain 43.2 kcal/mol
strain ΔE 43.2 kcal/mol 7 protein-contact clashes 7 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.697 kcal/mol/HA) ✓ Good fit quality (FQ -6.92) ✓ Strong H-bond network (12 bonds) ✓ Deep burial (82% SASA buried) ✓ Lipophilic contacts well-matched (83%) ✗ Extreme strain energy (43.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-23.006
kcal/mol
LE
-0.697
kcal/mol/HA
Fit Quality
-6.92
FQ (Leeson)
HAC
33
heavy atoms
MW
444
Da
LogP
1.91
cLogP
Strain ΔE
43.2 kcal/mol
SASA buried
82%
Lipo contact
83% BSA apolar/total
SASA unbound
754 Ų
Apolar buried
513 Ų

Interaction summary

HB 12 HY 12 PI 3 CLASH 7

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 rank5.947Score-23.006
Inter norm-0.861Intra norm0.163
Top1000noExcludedno
Contacts20H-bonds12
Artifact reasongeometry warning; 13 clashes; 3 protein clashes; high strain Δ 43.2
Residues
ALA111 ALA67 ARG154 ARG277 ASN112 ASP332 CYS70 GLU274 GLY199 GLY236 GLY237 GLY276 HIS197 LYS169 LYS69 PHE170 PRO113 SER200 TYR331 TYR389

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name1F3TContacts19
PoseOpen native poseHB0
IFP residues
ALA111 ALA67 ARG154 ARG277 ASP332 ASP88 CYS70 GLU274 GLY236 GLY237 GLY276 HIS197 LYS69 PHE238 PRO275 SER200 TYR278 TYR331 TYR389
Current overlap15Native recall0.79
Jaccard0.62RMSD-
HB strict6Strict recall0.67
HB same residue+role4HB role recall0.57
HB same residue4HB residue recall0.57

Protein summary

411 residues
Protein targetT13Atoms6340
Residues411Chains1
Residue summaryVAL:624; LEU:551; LYS:506; ARG:480; PHE:460; ILE:418; ASP:348; GLU:332; THR:322; TYR:315; PRO:308; ALA:290; SER:264; GLY:224; ASN:210; GLN:170

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
124 2.0144108354324066 -0.687857 -22.4649 2 14 0 0.00 0.00 - no Open
159 2.9075038331576377 -0.919278 -28.6542 4 17 0 0.00 0.00 - no Open
112 3.521664373030953 -0.809606 -26.3949 12 18 0 0.00 0.00 - no Open
106 5.9470200544350105 -0.860551 -23.0065 12 20 15 0.79 0.57 - 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 -23.006kcal/mol
Ligand efficiency (LE) -0.6972kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.917
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 443.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.91
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 43.19kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 32.78kcal/mol
Minimised FF energy -10.41kcal/mol

SASA & burial

✓ computed
SASA (unbound) 754.5Ų
Total solvent-accessible surface area of free ligand
BSA total 615.7Ų
Buried surface area upon binding
BSA apolar 513.0Ų
Hydrophobic contacts buried
BSA polar 102.7Ų
Polar contacts buried
Fraction buried 81.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 83.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2708.2Ų
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 3461.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1398.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)