FAIRMol

TC551

Pose ID 9077 Compound 1652 Pose 269

DB fairmolDocking 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 TC551
PDB1NJJ

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Weak or marginal quality
Binding strong Geometry high Native mixed SASA done
Strain ΔE
20.0 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.53, Jaccard 0.38, H-bond role recall 0.20
Burial
76%
Hydrophobic fit
78%
Reason: no major geometry red flags detected
2 protein-contact clashes 41% of hydrophobic surface appears solvent-exposed (7/17 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.632 kcal/mol/HA) ✓ Good fit quality (FQ -5.82) ✓ Good H-bonds (5 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ High strain energy (20.0 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (7)
Score
-16.427
kcal/mol
LE
-0.632
kcal/mol/HA
Fit Quality
-5.82
FQ (Leeson)
HAC
26
heavy atoms
MW
351
Da
LogP
0.96
cLogP
Strain ΔE
20.0 kcal/mol
SASA buried
76%
Lipo contact
78% BSA apolar/total
SASA unbound
630 Ų
Apolar buried
375 Ų

Interaction summary

HB 5 HY 5 PI 0 CLASH 2 ⚠ Exposure 41%

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

⚠️Partial hydrophobic solvent exposure
41% of hydrophobic surface appears solvent-exposed (7/17 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 17 Buried (contacted) 10 Exposed 7 LogP 0.96 H-bonds 5
Exposed fragments: pyridyl (4/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
Final rank2.030Score-16.427
Inter norm-0.847Intra norm0.216
Top1000noExcludedno
Contacts14H-bonds5
Artifact reasongeometry warning; 7 clashes; 1 protein clash; moderate strain Δ 20.0
Residues
ALA334 ARG242 ARG337 ASP243 ASP385 GLU384 GLY240 LEU339 PHE383 PRO338 SER282 THR241 VAL335 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
Jaccard0.38RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.20

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
246 0.05212297211422521 -1.26728 -31.9198 9 20 0 0.00 0.00 - no Open
245 0.15333775693127674 -1.28287 -31.1967 11 20 0 0.00 0.00 - no Open
251 0.375190949082224 -1.10388 -27.2108 8 11 0 0.00 0.00 - no Open
269 2.030229846488461 -0.847474 -16.4266 5 14 8 0.53 0.20 - no Current
263 2.036323288363696 -1.19848 -25.4194 11 19 0 0.00 0.00 - no Open
239 3.0498119327730224 -1.07349 -27.244 9 20 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 -16.427kcal/mol
Ligand efficiency (LE) -0.6318kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.821
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 351.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.96
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 20.01kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 85.62kcal/mol
Minimised FF energy 65.61kcal/mol

SASA & burial

✓ computed
SASA (unbound) 629.9Ų
Total solvent-accessible surface area of free ligand
BSA total 478.3Ų
Buried surface area upon binding
BSA apolar 375.3Ų
Hydrophobic contacts buried
BSA polar 103.0Ų
Polar contacts buried
Fraction buried 75.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2423.8Ų
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 1398.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)