FAIRMol

KB_chagas_60

Pose ID 10286 Compound 4056 Pose 121

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T16
T. brucei TR (Dimer interface (site 2)) T. brucei Dimer interface (site 2)
Ligand KB_chagas_60
PDB6RB5

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 high Native strong SASA done
Strain ΔE
26.2 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.58, Jaccard 0.35
Burial
79%
Hydrophobic fit
91%
Reason: no major geometry red flags detected
2 protein-contact clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Daphnia EC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.901 kcal/mol/HA) ✓ Good fit quality (FQ -8.31) ✓ Good H-bonds (4 bonds) ✓ Deep burial (79% SASA buried) ✓ Lipophilic contacts well-matched (91%) ✗ High strain energy (26.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-23.439
kcal/mol
LE
-0.901
kcal/mol/HA
Fit Quality
-8.31
FQ (Leeson)
HAC
26
heavy atoms
MW
344
Da
LogP
3.08
cLogP
Final rank
2.9145
rank score
Inter norm
-0.947
normalised
Contacts
15
H-bonds 8
Strain ΔE
26.2 kcal/mol
SASA buried
79%
Lipo contact
91% BSA apolar/total
SASA unbound
609 Ų
Apolar buried
433 Ų

Interaction summary

HBD 3 HBA 1 HY 9 PI 0 CLASH 2

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 3.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6RB5Contacts12
PoseOpen native poseHB0
IFP residues
ALA90 ARG74 GLY85 LEU73 LYS89 MET70 PHE83 PRO212 PRO213 SER86 SER87 VAL88
Current overlap7Native recall0.58
Jaccard0.35RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

493 residues
Protein targetT16Atoms7551
Residues493Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:276; MET:221

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:FAD501

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
121 2.9144632465997495 -0.947249 -23.4393 8 15 7 0.58 - - no Current
142 4.154147233780053 -0.858496 -21.0792 5 12 0 0.00 - - no Open
104 4.4253980169531735 -1.05658 -25.7006 5 19 0 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 -23.439kcal/mol
Ligand efficiency (LE) -0.9015kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.306
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 344.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.08
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 26.22kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 128.67kcal/mol
Minimised FF energy 102.45kcal/mol

SASA & burial

✓ computed
SASA (unbound) 608.5Ų
Total solvent-accessible surface area of free ligand
BSA total 478.1Ų
Buried surface area upon binding
BSA apolar 433.0Ų
Hydrophobic contacts buried
BSA polar 45.1Ų
Polar contacts buried
Fraction buried 78.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 90.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3177.3Ų
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 4076.6Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1453.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)