FAIRMol

Z49576055

Pose ID 13969 Compound 2572 Pose 411

DB fairmolDocking 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 Z49576055
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
61.1 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.93, Jaccard 0.68, H-bond role recall 0.67
Burial
79%
Hydrophobic fit
64%
Reason: strain 61.1 kcal/mol
strain ΔE 61.1 kcal/mol 1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.907 kcal/mol/HA) ✓ Good fit quality (FQ -8.25) ✓ Strong H-bond network (11 bonds) ✓ Deep burial (79% SASA buried) ✓ Lipophilic contacts well-matched (64%) ✗ Extreme strain energy (61.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-22.675
kcal/mol
LE
-0.907
kcal/mol/HA
Fit Quality
-8.25
FQ (Leeson)
HAC
25
heavy atoms
MW
365
Da
LogP
1.31
cLogP
Strain ΔE
61.1 kcal/mol
SASA buried
79%
Lipo contact
64% BSA apolar/total
SASA unbound
585 Ų
Apolar buried
298 Ų

Interaction summary

HB 11 HY 2 PI 2 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 rank3.636Score-22.675
Inter norm-0.972Intra norm0.065
Top1000noExcludedno
Contacts18H-bonds11
Artifact reasongeometry warning; 10 clashes; 2 protein clashes; high strain Δ 61.1
Residues
ARG137 ARG141 ASN103 HIS102 HIS138 MET98 SER99 ARG113 CYS69 GLY70 GLY72 GLY74 HIS11 ILE73 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
Jaccard0.68RMSD-
HB strict7Strict recall0.58
HB same residue+role6HB role recall0.67
HB same residue5HB residue recall0.62

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
373 1.7432220588539025 -0.91314 -18.4151 5 15 0 0.00 0.00 - no Open
411 3.635947303462581 -0.972039 -22.6755 11 18 13 0.93 0.67 - no Current
393 4.434744662180838 -1.43366 -34.6657 13 20 0 0.00 0.00 - no Open
376 5.018613268818412 -1.11954 -25.4655 11 18 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 -22.675kcal/mol
Ligand efficiency (LE) -0.9070kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.246
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 25HA

Physicochemical properties

Molecular weight 365.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.31
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 61.12kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 10.27kcal/mol
Minimised FF energy -50.86kcal/mol

SASA & burial

✓ computed
SASA (unbound) 585.3Ų
Total solvent-accessible surface area of free ligand
BSA total 461.8Ų
Buried surface area upon binding
BSA apolar 297.9Ų
Hydrophobic contacts buried
BSA polar 163.8Ų
Polar contacts buried
Fraction buried 78.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 64.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2121.2Ų
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 746.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)