FAIRMol

Z56900576

Pose ID 14024 Compound 4992 Pose 466

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 Z56900576
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
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
37.7 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.93, Jaccard 0.81, H-bond role recall 0.56
Burial
75%
Hydrophobic fit
76%
Reason: no major geometry red flags detected
2 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.941 kcal/mol/HA) ✓ Good fit quality (FQ -8.55) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (75% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ Very high strain energy (37.7 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (8) ✗ Internal clashes (8)
Score
-23.525
kcal/mol
LE
-0.941
kcal/mol/HA
Fit Quality
-8.55
FQ (Leeson)
HAC
25
heavy atoms
MW
357
Da
LogP
2.90
cLogP
Strain ΔE
37.7 kcal/mol
SASA buried
75%
Lipo contact
76% BSA apolar/total
SASA unbound
604 Ų
Apolar buried
345 Ų

Interaction summary

HB 10 HY 3 PI 5 CLASH 2

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 rank1.183Score-23.525
Inter norm-1.099Intra norm0.158
Top1000noExcludedno
Contacts15H-bonds10
Artifact reasongeometry warning; 8 clashes; 8 protein contact clashes; high strain Δ 37.7
Residues
ARG137 ARG140 ARG141 ASN103 HIS102 HIS138 ASP10 CYS69 GLY70 GLY74 HIS11 PRO12 SER43 SER71 TYR46

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 overlap13Native recall0.93
Jaccard0.81RMSD-
HB strict7Strict recall0.58
HB same residue+role5HB role recall0.56
HB same residue6HB residue recall0.75

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
421 0.5556837828012565 -1.31227 -24.8286 9 19 0 0.00 0.00 - no Open
466 1.1827438482399057 -1.09863 -23.5246 10 15 13 0.93 0.56 - 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 -23.525kcal/mol
Ligand efficiency (LE) -0.9410kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.554
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 25HA

Physicochemical properties

Molecular weight 357.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.90
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 37.73kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 85.82kcal/mol
Minimised FF energy 48.09kcal/mol

SASA & burial

✓ computed
SASA (unbound) 604.0Ų
Total solvent-accessible surface area of free ligand
BSA total 455.3Ų
Buried surface area upon binding
BSA apolar 344.8Ų
Hydrophobic contacts buried
BSA polar 110.5Ų
Polar contacts buried
Fraction buried 75.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 75.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2165.4Ų
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 776.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)