FAIRMol

KB_chagas_121

Pose ID 2115 Compound 1555 Pose 82

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T04
L. major PTR1 L. major
Ligand KB_chagas_121
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
Promising but geometrically suspicious
Binding strong Geometry low Native mixed SASA done
Strain ΔE
10.7 kcal/mol
Protein clashes
0
Internal clashes
8
Native overlap
contact recall 0.53, Jaccard 0.53, H-bond role recall 0.00
Burial
83%
Hydrophobic fit
79%
Reason: 8 internal clashes
8 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.033 kcal/mol/HA) ✓ Good fit quality (FQ -8.97) ✓ Deep burial (83% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ Moderate strain (10.7 kcal/mol) ✗ No H-bonds detected ✗ Geometry warnings ✗ Internal clashes (8)
Score
-22.732
kcal/mol
LE
-1.033
kcal/mol/HA
Fit Quality
-8.97
FQ (Leeson)
HAC
22
heavy atoms
MW
309
Da
LogP
3.18
cLogP
Strain ΔE
10.7 kcal/mol
SASA buried
83%
Lipo contact
79% BSA apolar/total
SASA unbound
555 Ų
Apolar buried
364 Ų

Interaction summary

HB 0 HY 21 PI 1 CLASH 0

HB · H-bonds

No hb · h-bonds detected for this pose.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.
Final rank-0.171Score-22.732
Inter norm-1.083Intra norm0.049
Top1000noExcludedno
Contacts10H-bonds0
Artifact reasongeometry warning; 8 clashes
Residues
ARG17 HIS241 LEU188 LEU226 LEU229 MET233 NDP302 PHE113 TYR194 VAL230

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name7PXXContacts19
PoseOpen native poseHB0
IFP residues
ARG17 ASP181 GLY225 HIS241 LEU188 LEU226 LEU229 LYS198 MET233 NDP302 PHE113 PRO115 SER111 SER112 SER227 TYR191 TYR194 VAL230 ARG287
Current overlap10Native recall0.53
Jaccard0.53RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

308 residues
Protein targetT04Atoms4210
Residues308Chains3
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
82 -0.17070415179487783 -1.08268 -22.7321 0 10 10 0.53 0.00 - no Current
129 1.0509792315125819 -1.0574 -20.8022 4 13 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 -22.732kcal/mol
Ligand efficiency (LE) -1.0333kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.971
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 22HA

Physicochemical properties

Molecular weight 309.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.18
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 10.66kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 37.28kcal/mol
Minimised FF energy 26.62kcal/mol

SASA & burial

✓ computed
SASA (unbound) 554.7Ų
Total solvent-accessible surface area of free ligand
BSA total 460.9Ų
Buried surface area upon binding
BSA apolar 364.1Ų
Hydrophobic contacts buried
BSA polar 96.8Ų
Polar contacts buried
Fraction buried 83.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1586.0Ų
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 1041.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)