FAIRMol

KB_HAT_56

Pose ID 13640 Compound 5424 Pose 82

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 KB_HAT_56
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
34.4 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 1.00, Jaccard 0.78, H-bond role recall 0.56
Burial
78%
Hydrophobic fit
78%
Reason: no major geometry red flags detected
2 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 High Ames Clear DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.647 kcal/mol/HA) ✓ Good fit quality (FQ -6.42) ✓ Good H-bonds (3 bonds) ✓ Deep burial (78% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Very high strain energy (34.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (17)
Score
-21.339
kcal/mol
LE
-0.647
kcal/mol/HA
Fit Quality
-6.42
FQ (Leeson)
HAC
33
heavy atoms
MW
470
Da
LogP
3.42
cLogP
Final rank
3.0414
rank score
Inter norm
-0.749
normalised
Contacts
18
H-bonds 10
Strain ΔE
34.4 kcal/mol
SASA buried
78%
Lipo contact
78% BSA apolar/total
SASA unbound
661 Ų
Apolar buried
402 Ų

Interaction summary

HBD 1 HBA 2 HY 4 PI 2 CLASH 2

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 overlap14Native recall1.00
Jaccard0.78RMSD-
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
82 3.041372483733448 -0.749308 -21.339 10 18 14 1.00 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 -21.339kcal/mol
Ligand efficiency (LE) -0.6466kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.416
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 469.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.42
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 34.41kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 19.11kcal/mol
Minimised FF energy -15.31kcal/mol

SASA & burial

✓ computed
SASA (unbound) 661.1Ų
Total solvent-accessible surface area of free ligand
BSA total 513.7Ų
Buried surface area upon binding
BSA apolar 402.5Ų
Hydrophobic contacts buried
BSA polar 111.2Ų
Polar contacts buried
Fraction buried 77.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2276.7Ų
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 743.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)