FAIRMol

ulfkktlib_246

Pose ID 13692 Compound 5386 Pose 134

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_246
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
19.7 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.79, Jaccard 0.73, H-bond role recall 0.44
Burial
81%
Hydrophobic fit
76%
Reason: no major geometry red flags detected
1 protein-contact clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Daphnia EC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 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 (-1.260 kcal/mol/HA) ✓ Good fit quality (FQ -10.55) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (81% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ Moderate strain (19.7 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (6)
Score
-25.206
kcal/mol
LE
-1.260
kcal/mol/HA
Fit Quality
-10.55
FQ (Leeson)
HAC
20
heavy atoms
MW
275
Da
LogP
2.89
cLogP
Final rank
2.0382
rank score
Inter norm
-1.268
normalised
Contacts
12
H-bonds 10
Strain ΔE
19.7 kcal/mol
SASA buried
81%
Lipo contact
76% BSA apolar/total
SASA unbound
477 Ų
Apolar buried
293 Ų

Interaction summary

HBD 2 HBA 6 HY 2 PI 1 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. 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: strict.
Name3K7OContacts14
PoseOpen native poseHB0
IFP residues
ARG137 ARG141 ASN103 HIS102 HIS138 ASP10 CYS69 GLY70 GLY74 HIS11 ILE73 PRO12 SER71 TYR46
Current overlap11Native recall0.79
Jaccard0.73RMSD-
HB strict5Strict recall0.42
HB same residue+role4HB role recall0.44
HB same residue4HB residue recall0.50

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
134 2.0382457530602975 -1.26777 -25.2058 10 12 11 0.79 0.44 - 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 -25.206kcal/mol
Ligand efficiency (LE) -1.2603kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.546
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 20HA

Physicochemical properties

Molecular weight 275.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.89
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 19.65kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 101.48kcal/mol
Minimised FF energy 81.83kcal/mol

SASA & burial

✓ computed
SASA (unbound) 477.4Ų
Total solvent-accessible surface area of free ligand
BSA total 385.2Ų
Buried surface area upon binding
BSA apolar 292.6Ų
Hydrophobic contacts buried
BSA polar 92.7Ų
Polar contacts buried
Fraction buried 80.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 75.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2104.3Ų
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 761.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)