FAIRMol

KB_chagas_97

Pose ID 8237 Compound 4000 Pose 107

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_97
PDB1F3T

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
19.0 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.74, Jaccard 0.52, H-bond role recall 0.29
Burial
83%
Hydrophobic fit
78%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-0.935 kcal/mol/HA) ✓ Good fit quality (FQ -8.83) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (83% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Moderate strain (19.0 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-26.189
kcal/mol
LE
-0.935
kcal/mol/HA
Fit Quality
-8.83
FQ (Leeson)
HAC
28
heavy atoms
MW
412
Da
LogP
3.53
cLogP
Strain ΔE
19.0 kcal/mol
SASA buried
83%
Lipo contact
78% BSA apolar/total
SASA unbound
673 Ų
Apolar buried
433 Ų

Interaction summary

HB 9 HY 7 PI 3 CLASH 6

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 rank2.916Score-26.189
Inter norm-0.987Intra norm0.051
Top1000noExcludedno
Contacts22H-bonds9
Artifact reasongeometry warning; 9 clashes; 1 protein clash
Residues
ALA111 ALA67 ARG154 ARG277 ASP233 ASP332 ASP88 GLU274 GLY199 GLY201 GLY235 GLY236 GLY237 GLY276 HIS197 HIS333 LYS69 PHE196 SER195 SER200 THR132 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 overlap14Native recall0.74
Jaccard0.52RMSD-
HB strict2Strict recall0.22
HB same residue+role2HB role recall0.29
HB same residue2HB residue recall0.29

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
172 1.9134998045254397 -0.79303 -20.8753 6 16 0 0.00 0.00 - no Open
181 2.8366532868781027 -0.68708 -18.3087 7 12 0 0.00 0.00 - no Open
107 2.9160797128979166 -0.986747 -26.1895 9 22 14 0.74 0.29 - no Current
126 4.1586623052380025 -0.847622 -21.9701 4 15 0 0.00 0.00 - no Open
107 4.636484064309373 -1.23657 -34.0694 11 22 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 -26.189kcal/mol
Ligand efficiency (LE) -0.9353kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.830
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 411.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.53
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 18.97kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 66.46kcal/mol
Minimised FF energy 47.48kcal/mol

SASA & burial

✓ computed
SASA (unbound) 673.0Ų
Total solvent-accessible surface area of free ligand
BSA total 556.9Ų
Buried surface area upon binding
BSA apolar 432.7Ų
Hydrophobic contacts buried
BSA polar 124.2Ų
Polar contacts buried
Fraction buried 82.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 77.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2592.3Ų
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 1375.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)