FAIRMol

ulfkktlib_3282

Pose ID 13728 Compound 5404 Pose 170

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 ulfkktlib_3282
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 medium Native strong SASA done
Strain ΔE
19.8 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.79, Jaccard 0.61, H-bond role recall 0.56
Burial
89%
Hydrophobic fit
73%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
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 (-1.174 kcal/mol/HA) ✓ Good fit quality (FQ -9.62) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (89% SASA buried) ✓ Lipophilic contacts well-matched (73%) ✗ Moderate strain (19.8 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (8)
Score
-22.302
kcal/mol
LE
-1.174
kcal/mol/HA
Fit Quality
-9.62
FQ (Leeson)
HAC
19
heavy atoms
MW
255
Da
LogP
1.28
cLogP
Final rank
2.2880
rank score
Inter norm
-1.263
normalised
Contacts
15
H-bonds 12
Strain ΔE
19.8 kcal/mol
SASA buried
89%
Lipo contact
73% BSA apolar/total
SASA unbound
473 Ų
Apolar buried
305 Ų

Interaction summary

HBA 7 HY 2 PI 3 CLASH 4

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 3.

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
Jaccard0.61RMSD-
HB strict6Strict recall0.50
HB same residue+role5HB role recall0.56
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
170 2.2879631380238705 -1.2627 -22.3024 12 15 11 0.79 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 -22.302kcal/mol
Ligand efficiency (LE) -1.1738kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.621
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 19HA

Physicochemical properties

Molecular weight 255.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.28
Lipinski: ≤ 5
Rotatable bonds 1

Conformational strain (MMFF94s)

Strain energy (ΔE) 19.77kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -0.51kcal/mol
Minimised FF energy -20.27kcal/mol

SASA & burial

✓ computed
SASA (unbound) 473.3Ų
Total solvent-accessible surface area of free ligand
BSA total 420.3Ų
Buried surface area upon binding
BSA apolar 305.3Ų
Hydrophobic contacts buried
BSA polar 115.0Ų
Polar contacts buried
Fraction buried 88.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 72.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2098.1Ų
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 741.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)