FAIRMol

Z56775559

Pose ID 14168 Compound 997 Pose 610

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T21
T. cruzi R5P T. cruzi
Ligand Z56775559
PDB3K7O

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
52.4 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.86, Jaccard 0.57, H-bond role recall 0.33
Burial
68%
Hydrophobic fit
81%
Reason: strain 52.4 kcal/mol
strain ΔE 52.4 kcal/mol 2 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.576 kcal/mol/HA) ✓ Good fit quality (FQ -6.15) ✓ Strong H-bond network (11 bonds) ✓ Deep burial (68% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ Extreme strain energy (52.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (23)
Score
-25.338
kcal/mol
LE
-0.576
kcal/mol/HA
Fit Quality
-6.15
FQ (Leeson)
HAC
44
heavy atoms
MW
595
Da
LogP
4.52
cLogP
Strain ΔE
52.4 kcal/mol
SASA buried
68%
Lipo contact
81% BSA apolar/total
SASA unbound
882 Ų
Apolar buried
487 Ų

Interaction summary

HB 11 HY 5 PI 4 CLASH 2
Final rank5.581Score-25.338
Inter norm-0.546Intra norm-0.030
Top1000noExcludedno
Contacts19H-bonds11
Artifact reasongeometry warning; 23 clashes; 2 protein clashes; high strain Δ 52.3
Residues
ARG137 ARG140 ARG141 ASN103 HIS102 MET98 TYR94 ARG113 ASP10 ASP45 CYS69 GLY70 GLY74 HIS11 PRO12 SER43 SER71 TYR46 VAL44

Protein summary

305 residues
Protein targetT21Atoms4646
Residues305Chains2
Residue summaryARG:576; ILE:532; VAL:512; GLU:420; ALA:360; PHE:240; HIS:238; LYS:220; THR:210; LEU:190; PRO:168; TYR:168; GLY:154; SER:154; ASP:144; ASN:112

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name3K7OContacts14
PoseOpen native poseHB0
IFP residues
ARG137 ARG141 ASN103 HIS102 HIS138 ASP10 CYS69 GLY70 GLY74 HIS11 ILE73 PRO12 SER71 TYR46
Current overlap12Native recall0.86
Jaccard0.57RMSD-
HB strict4Strict recall0.33
HB same residue+role3HB role recall0.33
HB same residue3HB residue recall0.38

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
574 2.1291762338091305 -0.775909 -31.3201 6 17 0 0.00 0.00 - no Open
585 3.2977884661571095 -0.576952 -23.8689 3 21 0 0.00 0.00 - no Open
610 5.581103562819958 -0.545542 -25.3379 11 19 12 0.86 0.33 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -25.338kcal/mol
Ligand efficiency (LE) -0.5759kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.153
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 44HA

Physicochemical properties

Molecular weight 594.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.52
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 52.39kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 252.76kcal/mol
Minimised FF energy 200.37kcal/mol

SASA & burial

✓ computed
SASA (unbound) 881.6Ų
Total solvent-accessible surface area of free ligand
BSA total 601.8Ų
Buried surface area upon binding
BSA apolar 487.4Ų
Hydrophobic contacts buried
BSA polar 114.4Ų
Polar contacts buried
Fraction buried 68.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2429.6Ų
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 2482.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 769.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)