FAIRMol

KB_chagas_218

Pose ID 2838 Compound 2108 Pose 128

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T05
L. major PTR1 L. major
Ligand KB_chagas_218
PDB7PXX

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
16.1 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.59, Jaccard 0.50, H-bond role recall 0.17
Burial
88%
Hydrophobic fit
78%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.234 kcal/mol/HA) ✓ Good fit quality (FQ -11.37) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (88% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Moderate strain (16.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-32.080
kcal/mol
LE
-1.234
kcal/mol/HA
Fit Quality
-11.37
FQ (Leeson)
HAC
26
heavy atoms
MW
397
Da
LogP
4.25
cLogP
Strain ΔE
16.1 kcal/mol
SASA buried
88%
Lipo contact
78% BSA apolar/total
SASA unbound
603 Ų
Apolar buried
415 Ų

Interaction summary

HB 7 HY 24 PI 3 CLASH 1

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 rank1.913Score-32.080
Inter norm-1.194Intra norm-0.040
Top1000noExcludedno
Contacts13H-bonds7
Artifact reasongeometry warning; 10 clashes; 1 protein clash; 1 severe cofactor-context clash
Residues
ARG17 ASP181 LEU188 LEU226 LEU229 MET183 NDP302 PHE113 PRO187 SER227 TYR194 VAL230 ARG287

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
NameligandContacts17
PoseOpen native poseHB0
IFP residues
ARG17 GLY225 HIS241 LEU188 LEU226 LEU229 LYS198 MET233 NDP302 PHE113 PRO115 SER111 SER227 TYR191 TYR194 VAL230 ARG287
Current overlap10Native recall0.59
Jaccard0.50RMSD-
HB strict1Strict recall0.14
HB same residue+role1HB role recall0.17
HB same residue2HB residue recall0.40

Protein summary

274 residues
Protein targetT05Atoms4108
Residues274Chains2
Residue summaryLEU:494; ALA:421; ARG:384; VAL:368; THR:295; TYR:231; SER:198; PRO:196; ILE:190; LYS:176; ASN:154; GLU:150; GLY:126; PHE:120; HIS:119; ASP:108

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:NDP302

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
128 1.912706934214778 -1.19389 -32.0802 7 13 10 0.59 0.17 - no Current
152 3.8411612398501345 -0.997004 -25.7046 7 14 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 -32.080kcal/mol
Ligand efficiency (LE) -1.2339kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.368
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 396.8Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.25
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 16.14kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 46.92kcal/mol
Minimised FF energy 30.78kcal/mol

SASA & burial

✓ computed
SASA (unbound) 603.0Ų
Total solvent-accessible surface area of free ligand
BSA total 530.2Ų
Buried surface area upon binding
BSA apolar 415.0Ų
Hydrophobic contacts buried
BSA polar 115.1Ų
Polar contacts buried
Fraction buried 87.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1581.7Ų
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 2179.4Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1085.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)