FAIRMol

ulfkktlib_3008

Pose ID 13723 Compound 2135 Pose 165

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_3008
PDB3K7O

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
32.7 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.86, Jaccard 0.71, H-bond role recall 0.67
Burial
90%
Hydrophobic fit
60%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 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 Alert DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.322 kcal/mol/HA) ✓ Good fit quality (FQ -10.60) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (90% SASA buried) ✗ Very high strain energy (32.7 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (5)
Score
-23.804
kcal/mol
LE
-1.322
kcal/mol/HA
Fit Quality
-10.60
FQ (Leeson)
HAC
18
heavy atoms
MW
246
Da
LogP
1.10
cLogP
Final rank
3.8455
rank score
Inter norm
-1.405
normalised
Contacts
15
H-bonds 15
Strain ΔE
32.7 kcal/mol
SASA buried
90%
Lipo contact
60% BSA apolar/total
SASA unbound
437 Ų
Apolar buried
235 Ų

Interaction summary

HBD 2 HBA 8 HY 2 PI 2 CLASH 3

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 overlap12Native recall0.86
Jaccard0.71RMSD-
HB strict6Strict recall0.50
HB same residue+role6HB role recall0.67
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
198 2.1175454209822377 -1.79645 -32.3634 8 14 0 0.00 0.00 - no Open
165 3.845478847048729 -1.40512 -23.804 15 15 12 0.86 0.67 - no Current
151 5.5610387300996775 -1.68329 -29.2716 16 15 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 -23.804kcal/mol
Ligand efficiency (LE) -1.3224kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.598
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 18HA

Physicochemical properties

Molecular weight 246.2Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.10
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 32.71kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 74.35kcal/mol
Minimised FF energy 41.65kcal/mol

SASA & burial

✓ computed
SASA (unbound) 437.1Ų
Total solvent-accessible surface area of free ligand
BSA total 392.3Ų
Buried surface area upon binding
BSA apolar 234.8Ų
Hydrophobic contacts buried
BSA polar 157.6Ų
Polar contacts buried
Fraction buried 89.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 59.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2007.7Ų
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 736.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)