FAIRMol

KB_chagas_164

Pose ID 4917 Compound 702 Pose 176

DB SELECTIONDocking 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_164
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
17.7 kcal/mol
Protein clashes
8
Internal clashes
8
Native overlap
contact recall 0.74, Jaccard 0.61, H-bond role recall 0.60
Burial
98%
Hydrophobic fit
85%
Reason: 8 internal clashes
8 protein-contact clashes 8 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.335 kcal/mol/HA) ✓ Good fit quality (FQ -11.97) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ Moderate strain (17.7 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (10) ✗ Many internal clashes (11)
Score
-32.047
kcal/mol
LE
-1.335
kcal/mol/HA
Fit Quality
-11.97
FQ (Leeson)
HAC
24
heavy atoms
MW
338
Da
LogP
1.85
cLogP
Strain ΔE
17.7 kcal/mol
SASA buried
98%
Lipo contact
85% BSA apolar/total
SASA unbound
578 Ų
Apolar buried
483 Ų

Interaction summary

HB 6 HY 24 PI 3 CLASH 8
Final rank1.466Score-32.047
Inter norm-1.344Intra norm0.009
Top1000noExcludedno
Contacts18H-bonds6
Artifact reasongeometry warning; 11 clashes; 10 protein contact clashes; 4 cofactor-context clashes
Residues
ARG14 ASN175 ASP161 CYS168 GLY205 LEU208 LEU209 LYS178 MET163 NAP301 PHE171 PHE97 PRO167 PRO210 SER95 TYR174 VAL164 VAL206

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

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
Jaccard0.61RMSD-
HB strict4Strict recall0.67
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.60

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
173 0.7297662232967618 -1.1223 -25.4623 2 17 0 0.00 0.00 - no Open
166 0.7619998499724264 -1.12236 -21.9231 11 16 0 0.00 0.00 - no Open
124 0.8007085204419594 -1.45986 -34.1762 8 15 0 0.00 0.00 - no Open
176 1.465631046449186 -1.34406 -32.047 6 18 14 0.74 0.60 - no Current
156 1.9477162826235883 -1.0966 -22.0804 4 17 0 0.00 0.00 - no Open
142 1.9889542389045647 -1.07786 -25.6529 6 14 0 0.00 0.00 - no Open
165 2.619897110181579 -0.985905 -19.201 5 10 0 0.00 0.00 - no Open
97 3.761259210392481 -0.998031 -20.1356 14 13 0 0.00 0.00 - no Open
187 4.198272735387158 -0.88192 -20.6453 5 12 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 -32.047kcal/mol
Ligand efficiency (LE) -1.3353kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.967
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 24HA

Physicochemical properties

Molecular weight 338.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.85
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 17.70kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -151.47kcal/mol
Minimised FF energy -169.17kcal/mol

SASA & burial

✓ computed
SASA (unbound) 578.2Ų
Total solvent-accessible surface area of free ligand
BSA total 569.4Ų
Buried surface area upon binding
BSA apolar 482.6Ų
Hydrophobic contacts buried
BSA polar 86.9Ų
Polar contacts buried
Fraction buried 98.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 84.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1623.6Ų
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 917.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)