FAIRMol

TC241

Pose ID 9048 Compound 2122 Pose 240

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 TC241
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
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
40.2 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.53, Jaccard 0.40, H-bond role recall 0.60
Burial
77%
Hydrophobic fit
78%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes 100% of hydrophobic surface is solvent-exposed (16/16 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 (-0.983 kcal/mol/HA) ✓ Good fit quality (FQ -8.81) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (77% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Extreme strain energy (40.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-23.590
kcal/mol
LE
-0.983
kcal/mol/HA
Fit Quality
-8.81
FQ (Leeson)
HAC
24
heavy atoms
MW
327
Da
LogP
1.78
cLogP
Strain ΔE
40.2 kcal/mol
SASA buried
77%
Lipo contact
78% BSA apolar/total
SASA unbound
562 Ų
Apolar buried
337 Ų

Interaction summary

HB 9 HY 0 PI 0 CLASH 3 ⚠ Exposure 100%

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

No hy · hydrophobic contacts detected for this pose.

CLASH · Clashes

🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
100% of hydrophobic surface is solvent-exposed (16/16 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 16 Buried (contacted) 0 Exposed 16 LogP 1.78 H-bonds 9
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (4/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (2 atoms exposed)
Final rank3.241Score-23.590
Inter norm-1.020Intra norm0.037
Top1000noExcludedno
Contacts13H-bonds9
Artifact reasongeometry warning; 10 clashes; 2 protein clashes; high strain Δ 40.2
Residues
ARG242 ARG337 ASP243 ASP385 ASP47 GLU384 GLY240 LEU339 LYS51 PHE383 SER282 THR241 VAL336

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 overlap8Native recall0.53
Jaccard0.40RMSD-
HB strict2Strict recall0.33
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.60

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
221 2.0077812066392657 -1.17383 -28.7197 9 14 0 0.00 0.00 - no Open
241 2.3528098974898835 -0.863335 -23.523 8 12 0 0.00 0.00 - no Open
240 3.2412632912082957 -1.01964 -23.5904 9 13 8 0.53 0.60 - no Current
210 3.449396824714685 -1.26484 -27.6814 14 14 0 0.00 0.00 - no Open
257 3.5567855665101447 -1.42321 -33.4356 10 18 0 0.00 0.00 - no Open
150 4.302305108254698 -1.30222 -27.4863 14 18 0 0.00 0.00 - no Open
267 4.3230268269514776 -0.796912 -19.6092 9 9 0 0.00 0.00 - no Open
162 4.726542041013789 -1.23245 -28.9868 12 13 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 -23.590kcal/mol
Ligand efficiency (LE) -0.9829kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.809
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 24HA

Physicochemical properties

Molecular weight 327.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.78
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 40.20kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 117.94kcal/mol
Minimised FF energy 77.74kcal/mol

SASA & burial

✓ computed
SASA (unbound) 562.5Ų
Total solvent-accessible surface area of free ligand
BSA total 433.2Ų
Buried surface area upon binding
BSA apolar 337.2Ų
Hydrophobic contacts buried
BSA polar 96.0Ų
Polar contacts buried
Fraction buried 77.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 77.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2400.9Ų
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 3349.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1371.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)