FAIRMol

TC234

Pose ID 9046 Compound 4103 Pose 238

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 TC234
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 mixed SASA done
Strain ΔE
44.8 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.47, Jaccard 0.32, H-bond role recall 0.20
Burial
76%
Hydrophobic fit
81%
Reason: strain 44.8 kcal/mol
strain ΔE 44.8 kcal/mol 1 protein-contact clashes 58% of hydrophobic surface appears solvent-exposed (11/19 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.871 kcal/mol/HA) ✓ Good fit quality (FQ -8.03) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ Extreme strain energy (44.8 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (7) ✗ Many internal clashes (12)
Score
-22.649
kcal/mol
LE
-0.871
kcal/mol/HA
Fit Quality
-8.03
FQ (Leeson)
HAC
26
heavy atoms
MW
371
Da
LogP
1.99
cLogP
Strain ΔE
44.8 kcal/mol
SASA buried
76%
Lipo contact
81% BSA apolar/total
SASA unbound
605 Ų
Apolar buried
370 Ų

Interaction summary

HB 7 HY 3 PI 0 CLASH 1 ⚠ Exposure 57%
⚠️Partial hydrophobic solvent exposure
58% of hydrophobic surface appears solvent-exposed (11/19 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 19 Buried (contacted) 8 Exposed 11 LogP 1.99 H-bonds 7
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (2/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
Final rank1.703Score-22.649
Inter norm-0.908Intra norm0.037
Top1000noExcludedno
Contacts14H-bonds7
Artifact reasongeometry warning; 12 clashes; 7 protein contact clashes; high strain Δ 44.8
Residues
ARG22 ARG50 ASN20 ASP385 ASP44 ASP47 GLU384 LEU25 LEU339 LEU382 PHE284 SER282 THR21 THR285

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

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 overlap7Native recall0.47
Jaccard0.32RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.20

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
238 1.7026030405195072 -0.908215 -22.6494 7 14 7 0.47 0.20 - no Current
330 3.2897824339235213 -0.887284 -24.8785 4 11 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 -22.649kcal/mol
Ligand efficiency (LE) -0.8711kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.026
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 371.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.99
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 44.77kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 42.29kcal/mol
Minimised FF energy -2.48kcal/mol

SASA & burial

✓ computed
SASA (unbound) 604.8Ų
Total solvent-accessible surface area of free ligand
BSA total 458.8Ų
Buried surface area upon binding
BSA apolar 370.4Ų
Hydrophobic contacts buried
BSA polar 88.4Ų
Polar contacts buried
Fraction buried 75.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2479.1Ų
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 1374.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)