FAIRMol

KB_chagas_109

Pose ID 8240 Compound 1420 Pose 110

DB fairmolDocking 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_109
PDB1F3T

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
38.1 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.79, Jaccard 0.60, H-bond role recall 0.57
Burial
78%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.599 kcal/mol/HA) ✓ Good fit quality (FQ -5.99) ✓ Strong H-bond network (13 bonds) ✓ Deep burial (78% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ Very high strain energy (38.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (15)
Score
-20.367
kcal/mol
LE
-0.599
kcal/mol/HA
Fit Quality
-5.99
FQ (Leeson)
HAC
34
heavy atoms
MW
465
Da
LogP
3.61
cLogP
Strain ΔE
38.1 kcal/mol
SASA buried
78%
Lipo contact
82% BSA apolar/total
SASA unbound
740 Ų
Apolar buried
471 Ų

Interaction summary

HB 13 HY 8 PI 4 CLASH 4

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 rank5.110Score-20.367
Inter norm-0.809Intra norm0.210
Top1000noExcludedno
Contacts21H-bonds13
Artifact reasongeometry warning; 15 clashes; 2 protein clashes; high strain Δ 38.1
Residues
ALA111 ALA67 ALA90 ARG154 ARG277 ASN112 ASP332 ASP88 CYS70 GLU274 GLY199 GLY201 GLY236 GLY237 GLY276 HIS197 LYS69 PHE170 PRO113 SER200 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
Jaccard0.60RMSD-
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
162 3.658050033511528 -0.818134 -27.1846 5 15 0 0.00 0.00 - no Open
110 5.109970402773272 -0.808605 -20.3675 13 21 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 -20.367kcal/mol
Ligand efficiency (LE) -0.5990kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.994
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 464.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.61
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 38.14kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 65.03kcal/mol
Minimised FF energy 26.89kcal/mol

SASA & burial

✓ computed
SASA (unbound) 740.2Ų
Total solvent-accessible surface area of free ligand
BSA total 575.3Ų
Buried surface area upon binding
BSA apolar 470.6Ų
Hydrophobic contacts buried
BSA polar 104.7Ų
Polar contacts buried
Fraction buried 77.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2663.2Ų
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 1428.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)