FAIRMol

TC343

Pose ID 4291 Compound 956 Pose 228

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T07
T. brucei PTR1 T. brucei
Ligand TC343
PDB6RX6

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
21.2 kcal/mol
Protein clashes
0
Internal clashes
18
Native overlap
contact recall 0.58, Jaccard 0.52, H-bond role recall 0.40
Burial
69%
Hydrophobic fit
82%
Reason: 18 internal clashes
18 intramolecular clashes 50% of hydrophobic surface appears solvent-exposed (14/28 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Daphnia EC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Algae IC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG High Ames Clear DILI Risk
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.789 kcal/mol/HA) ✓ Good fit quality (FQ -8.02) ✓ Good H-bonds (5 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ High strain energy (21.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (18)
Score
-28.410
kcal/mol
LE
-0.789
kcal/mol/HA
Fit Quality
-8.02
FQ (Leeson)
HAC
36
heavy atoms
MW
487
Da
LogP
4.95
cLogP
Final rank
1.2107
rank score
Inter norm
-0.936
normalised
Contacts
13
H-bonds 9
Strain ΔE
21.2 kcal/mol
SASA buried
69%
Lipo contact
82% BSA apolar/total
SASA unbound
799 Ų
Apolar buried
454 Ų

Interaction summary

HBD 4 HBA 1 HY 6 PI 4 CLASH 0

HBD/HBA · H-bonds (geometric)

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

No clash · clashes detected for this pose.

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
NameTbPTR1_cW_6RX6_ReadyContacts19
PoseOpen native poseHB0
IFP residues
ARG14 ASP161 CYS168 GLY205 LEU208 LEU209 LYS178 MET213 NAP301 PHE171 PHE97 PRO210 PRO99 SER207 SER95 TRP221 TYR174 TYR98 VAL206
Current overlap11Native recall0.58
Jaccard0.52RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

Protein summary

275 residues
Protein targetT07Atoms3932
Residues275Chains3
Residue summaryLEU:437; VAL:433; ALA:361; ARG:288; ILE:266; GLU:210; LYS:198; SER:198; ASN:182; THR:154; GLN:153; PHE:140; PRO:140; TYR:126; GLY:112; HIS:103

Receptor context

1 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 1 Excluded HETATM 0
Kept cofactors / ions
A:NAP301

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
228 1.210668734486631 -0.935701 -28.41 9 13 11 0.58 0.40 - no Current
271 2.191999564136022 -0.746465 -24.0976 6 12 0 0.00 0.00 - no Open
276 2.592891886812236 -0.705968 -21.027 3 18 0 0.00 0.00 - no Open
255 2.919592932455517 -0.678087 -20.159 8 22 0 0.00 0.00 - no Open
207 5.688113683789827 -0.904873 -28.946 16 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 -28.410kcal/mol
Ligand efficiency (LE) -0.7892kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.021
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 486.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.95
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 21.17kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 140.42kcal/mol
Minimised FF energy 119.25kcal/mol

SASA & burial

✓ computed
SASA (unbound) 799.4Ų
Total solvent-accessible surface area of free ligand
BSA total 554.5Ų
Buried surface area upon binding
BSA apolar 453.6Ų
Hydrophobic contacts buried
BSA polar 100.9Ų
Polar contacts buried
Fraction buried 69.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1760.9Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 949.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)