FAIRMol

TC430

Pose ID 9069 Compound 498 Pose 261

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T14
T. brucei ODC (G418 binding site) T. brucei G418 binding site
Ligand TC430
PDB1NJJ

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
43.1 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.73, Jaccard 0.48, H-bond role recall 0.40
Burial
72%
Hydrophobic fit
85%
Reason: strain 43.1 kcal/mol
strain ΔE 43.1 kcal/mol 4 protein-contact clashes 4 intramolecular clashes 60% of hydrophobic surface is solvent-exposed (21/35 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.412 kcal/mol/HA) ✓ Good fit quality (FQ -4.38) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ Extreme strain energy (43.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (23)
Score
-17.737
kcal/mol
LE
-0.412
kcal/mol/HA
Fit Quality
-4.38
FQ (Leeson)
HAC
43
heavy atoms
MW
577
Da
LogP
6.54
cLogP
Strain ΔE
43.1 kcal/mol
SASA buried
72%
Lipo contact
85% BSA apolar/total
SASA unbound
878 Ų
Apolar buried
537 Ų

Interaction summary

HB 10 HY 5 PI 0 CLASH 4 ⚠ Exposure 60%

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
60% of hydrophobic surface is solvent-exposed (21/35 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Non-polar atoms 35 Buried (contacted) 14 Exposed 21 LogP 6.54 H-bonds 10
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (4/6 atoms exposed)phenyl (2/5 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (5 atoms exposed)
Final rank7.390Score-17.737
Inter norm-0.564Intra norm0.152
Top1000noExcludedno
Contacts19H-bonds10
Artifact reasongeometry warning; 23 clashes; 4 protein clashes; high strain Δ 42.7
Residues
ALA283 ARG22 ARG342 ASN20 ASP385 CYS26 GLN341 GLU343 GLU384 ILE345 LEU25 LEU339 LEU382 PHE284 PRO340 PRO344 SER282 THR21 THR285

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name1NJJContacts15
PoseOpen native poseHB0
IFP residues
ARG22 ARG242 ARG337 ARG342 ASP243 ASP385 GLN341 GLU384 LEU25 LEU339 LEU382 PRO340 PRO344 SER282 THR241
Current overlap11Native recall0.73
Jaccard0.48RMSD-
HB strict1Strict recall0.17
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

Protein summary

398 residues
Protein targetT14Atoms6140
Residues398Chains1
Residue summaryVAL:592; LEU:513; LYS:484; ARG:432; PHE:420; ILE:418; ASP:349; THR:322; TYR:315; PRO:308; GLU:301; ALA:290; SER:253; GLY:217; ASN:210; GLN:170

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:ORX602

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
306 2.818160850913292 -0.602277 -20.7355 6 22 0 0.00 0.00 - no Open
287 2.843849260445974 -0.611688 -19.9665 8 23 0 0.00 0.00 - no Open
207 3.5112248839176954 -0.646067 -23.4175 3 18 0 0.00 0.00 - no Open
265 3.697636978323058 -0.584172 -21.1945 6 20 0 0.00 0.00 - no Open
227 4.276339150247284 -0.593614 -20.7962 7 22 0 0.00 0.00 - no Open
261 7.390285276367939 -0.564349 -17.7368 10 19 11 0.73 0.40 - 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 -17.737kcal/mol
Ligand efficiency (LE) -0.4125kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -4.384
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 43HA

Physicochemical properties

Molecular weight 576.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 6.54
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 43.12kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 166.85kcal/mol
Minimised FF energy 123.73kcal/mol

SASA & burial

✓ computed
SASA (unbound) 878.1Ų
Total solvent-accessible surface area of free ligand
BSA total 632.3Ų
Buried surface area upon binding
BSA apolar 537.4Ų
Hydrophobic contacts buried
BSA polar 94.9Ų
Polar contacts buried
Fraction buried 72.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2705.6Ų
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 3349.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1395.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)