FAIRMol

Z32448862

Pose ID 14035 Compound 3216 Pose 477

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 Z32448862
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
23.9 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.79, Jaccard 0.65, H-bond role recall 0.67
Burial
73%
Hydrophobic fit
74%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes 37% of hydrophobic surface appears solvent-exposed (7/19 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Daphnia EC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Algae IC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG High Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.889 kcal/mol/HA) ✓ Good fit quality (FQ -8.39) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (73% SASA buried) ✓ Lipophilic contacts well-matched (74%) ✗ High strain energy (23.9 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (11) ✗ Many internal clashes (15)
Score
-24.890
kcal/mol
LE
-0.889
kcal/mol/HA
Fit Quality
-8.39
FQ (Leeson)
HAC
28
heavy atoms
MW
462
Da
LogP
3.91
cLogP
Final rank
2.5964
rank score
Inter norm
-0.862
normalised
Contacts
14
H-bonds 10
Strain ΔE
23.9 kcal/mol
SASA buried
73%
Lipo contact
74% BSA apolar/total
SASA unbound
595 Ų
Apolar buried
323 Ų

Interaction summary

HBD 1 HBA 6 HY 4 PI 4 CLASH 4

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 5.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: permissive.
Name3K7OContacts14
PoseOpen native poseHB0
IFP residues
ARG137 ARG141 ASN103 HIS102 HIS138 ASP10 CYS69 GLY70 GLY74 HIS11 ILE73 PRO12 SER71 TYR46
Current overlap11Native recall0.79
Jaccard0.65RMSD-
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
471 1.5395518164582227 -0.908136 -23.753 3 18 0 0.00 0.00 - no Open
477 2.5964271622007544 -0.861558 -24.8902 10 14 11 0.79 0.67 - no Current
470 3.628058194338564 -1.19186 -22.4542 11 20 0 0.00 0.00 - no Open
454 4.711687193998053 -1.1026 -23.5647 7 21 0 0.00 0.00 - no Open
510 4.889442986114997 -0.8363 -18.5261 2 22 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 -24.890kcal/mol
Ligand efficiency (LE) -0.8889kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.392
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 462.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.91
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 23.85kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -6.46kcal/mol
Minimised FF energy -30.32kcal/mol

SASA & burial

✓ computed
SASA (unbound) 594.8Ų
Total solvent-accessible surface area of free ligand
BSA total 435.6Ų
Buried surface area upon binding
BSA apolar 322.8Ų
Hydrophobic contacts buried
BSA polar 112.8Ų
Polar contacts buried
Fraction buried 73.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 74.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2157.6Ų
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 780.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)