FAIRMol

KB_chagas_43

Pose ID 4910 Compound 2977 Pose 169

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T08
T. brucei PTR1 T. brucei
Ligand KB_chagas_43
PDB6RX6

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
28.3 kcal/mol
Protein clashes
2
Internal clashes
3
Native overlap
contact recall 0.74, Jaccard 0.64, H-bond role recall 0.20
Burial
93%
Hydrophobic fit
90%
Reason: no major geometry red flags detected
2 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.096 kcal/mol/HA) ✓ Good fit quality (FQ -10.68) ✓ Good H-bonds (4 bonds) ✓ Deep burial (93% SASA buried) ✓ Lipophilic contacts well-matched (90%) ✗ High strain energy (28.3 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (2) ✗ Many internal clashes (10)
Score
-33.970
kcal/mol
LE
-1.096
kcal/mol/HA
Fit Quality
-10.68
FQ (Leeson)
HAC
31
heavy atoms
MW
414
Da
LogP
4.14
cLogP
Strain ΔE
28.3 kcal/mol
SASA buried
93%
Lipo contact
90% BSA apolar/total
SASA unbound
703 Ų
Apolar buried
584 Ų

Interaction summary

HB 4 HY 24 PI 4 CLASH 3

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 rank0.341Score-33.970
Inter norm-1.121Intra norm0.026
Top1000noExcludedno
Contacts17H-bonds4
Artifact reasongeometry warning; 10 clashes; 2 protein contact clashes; 2 cofactor-context clashes; moderate strain Δ 28.3
Residues
ARG14 ASP161 CYS168 GLY205 LEU208 LEU209 LYS13 MET163 NAP301 PHE97 PRO210 SER207 SER95 TRP221 TYR174 VAL206 VAL211

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 overlap14Native recall0.74
Jaccard0.64RMSD-
HB strict2Strict recall0.33
HB same residue+role1HB role recall0.20
HB same residue2HB residue recall0.40

Protein summary

258 residues
Protein targetT08Atoms3881
Residues258Chains2
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
169 0.3409103823226111 -1.12149 -33.9701 4 17 14 0.74 0.20 - no Current
102 4.661609131043884 -1.12925 -31.3536 10 23 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 -33.970kcal/mol
Ligand efficiency (LE) -1.0958kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.676
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 413.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.14
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 28.29kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 158.41kcal/mol
Minimised FF energy 130.13kcal/mol

SASA & burial

✓ computed
SASA (unbound) 703.1Ų
Total solvent-accessible surface area of free ligand
BSA total 652.7Ų
Buried surface area upon binding
BSA apolar 583.9Ų
Hydrophobic contacts buried
BSA polar 68.8Ų
Polar contacts buried
Fraction buried 92.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1747.9Ų
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 938.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)