FAIRMol

Z2939836159

Pose ID 13960 Compound 5349 Pose 402

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 Z2939836159
PDB3K7O

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising and worth follow-up
Binding strong Geometry high Native strong SASA done
Strain ΔE
14.9 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.93, Jaccard 0.87, H-bond role recall 0.89
Burial
91%
Hydrophobic fit
49%
Reason: no major geometry red flags detected
1 protein-contact clashes 40% of hydrophobic surface appears solvent-exposed (2/5 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>100 mg/L)
Algae IC₅₀
Not classified (>100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Low
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.872 kcal/mol/HA) ✓ Good fit quality (FQ -12.38) ✓ Strong H-bond network (11 bonds) ✓ Deep burial (91% SASA buried) ✗ Moderate strain (14.9 kcal/mol) ✗ Geometry warnings
Score
-22.464
kcal/mol
LE
-1.872
kcal/mol/HA
Fit Quality
-12.38
FQ (Leeson)
HAC
12
heavy atoms
MW
171
Da
LogP
-1.46
cLogP
Final rank
1.1885
rank score
Inter norm
-2.009
normalised
Contacts
14
H-bonds 16
Strain ΔE
14.9 kcal/mol
SASA buried
91%
Lipo contact
49% BSA apolar/total
SASA unbound
352 Ų
Apolar buried
157 Ų

Interaction summary

HBD 2 HBA 9 HY 2 PI 2 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 7.

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 overlap13Native recall0.93
Jaccard0.87RMSD-
HB strict9Strict recall0.75
HB same residue+role8HB role recall0.89
HB same residue7HB residue recall0.88

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
402 1.1884861012854768 -2.00931 -22.4643 16 14 13 0.93 0.89 - 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 -22.464kcal/mol
Ligand efficiency (LE) -1.8720kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -12.384
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 12HA

Physicochemical properties

Molecular weight 171.2Da
Lipinski: ≤ 500 Da
LogP (cLogP) -1.46
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 14.93kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 24.50kcal/mol
Minimised FF energy 9.57kcal/mol

SASA & burial

✓ computed
SASA (unbound) 351.9Ų
Total solvent-accessible surface area of free ligand
BSA total 321.4Ų
Buried surface area upon binding
BSA apolar 156.9Ų
Hydrophobic contacts buried
BSA polar 164.4Ų
Polar contacts buried
Fraction buried 91.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 48.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1920.6Ų
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 736.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)