FAIRMol

TC408

Pose ID 13784 Compound 1704 Pose 226

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 TC408
PDB3K7O

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
34.7 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 1.00, Jaccard 0.88, H-bond role recall 0.11
Burial
76%
Hydrophobic fit
87%
Reason: no major geometry red flags detected
1 protein-contact clashes 37% of hydrophobic surface appears solvent-exposed (7/19 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
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.074 kcal/mol/HA) ✓ Good fit quality (FQ -10.02) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (87%) ✗ Very high strain energy (34.7 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (6) ✗ Internal clashes (7)
Score
-29.009
kcal/mol
LE
-1.074
kcal/mol/HA
Fit Quality
-10.02
FQ (Leeson)
HAC
27
heavy atoms
MW
361
Da
LogP
2.25
cLogP
Final rank
0.9119
rank score
Inter norm
-1.006
normalised
Contacts
16
H-bonds 9
Strain ΔE
34.7 kcal/mol
SASA buried
76%
Lipo contact
87% BSA apolar/total
SASA unbound
656 Ų
Apolar buried
433 Ų

Interaction summary

HBD 3 HBA 5 HY 3 PI 4 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. 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: 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
Jaccard0.88RMSD-
HB strict2Strict recall0.17
HB same residue+role1HB role recall0.11
HB same residue1HB residue recall0.12

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
243 0.6383642184233481 -1.0895 -32.0384 4 13 0 0.00 0.00 - no Open
201 0.8514219575329248 -1.05836 -31.6861 7 17 0 0.00 0.00 - no Open
226 0.9119370131705961 -1.00589 -29.0088 9 16 14 1.00 0.11 - no Current
252 0.9771214741373022 -0.806834 -22.1243 2 14 0 0.00 0.00 - no Open
230 1.2472816895024497 -0.89324 -26.0279 2 18 0 0.00 0.00 - no Open
212 1.2689902355634186 -1.20655 -34.7324 8 25 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 -29.009kcal/mol
Ligand efficiency (LE) -1.0744kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.024
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 361.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.25
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 34.71kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 83.96kcal/mol
Minimised FF energy 49.25kcal/mol

SASA & burial

✓ computed
SASA (unbound) 656.3Ų
Total solvent-accessible surface area of free ligand
BSA total 498.6Ų
Buried surface area upon binding
BSA apolar 433.0Ų
Hydrophobic contacts buried
BSA polar 65.5Ų
Polar contacts buried
Fraction buried 76.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 86.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2282.0Ų
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 764.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)