FAIRMol

TC552

Pose ID 9078 Compound 4170 Pose 270

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 TC552
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
29.1 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.53, Jaccard 0.38, H-bond role recall 0.20
Burial
78%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
1 protein-contact clashes 44% of hydrophobic surface appears solvent-exposed (8/18 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 (-0.914 kcal/mol/HA) ✓ Good fit quality (FQ -8.53) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (78% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ High strain energy (29.1 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (8)
Score
-24.683
kcal/mol
LE
-0.914
kcal/mol/HA
Fit Quality
-8.53
FQ (Leeson)
HAC
27
heavy atoms
MW
366
Da
LogP
1.64
cLogP
Strain ΔE
29.1 kcal/mol
SASA buried
78%
Lipo contact
82% BSA apolar/total
SASA unbound
649 Ų
Apolar buried
417 Ų

Interaction summary

HB 6 HY 9 PI 0 CLASH 1 ⚠ Exposure 44%
⚠️Partial hydrophobic solvent exposure
44% of hydrophobic surface appears solvent-exposed (8/18 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 18 Buried (contacted) 10 Exposed 8 LogP 1.64 H-bonds 6
Exposed fragments: pyridyl (4/6 atoms exposed)aliphatic chain/group (4 atoms exposed)
Final rank3.043Score-24.683
Inter norm-0.914Intra norm-0.001
Top1000noExcludedno
Contacts14H-bonds6
Artifact reasongeometry warning; 8 clashes; 2 protein clashes; moderate strain Δ 29.1
Residues
ALA334 ARG242 ARG337 ASP243 ASP385 ASP47 GLU384 LEU339 MET386 PHE383 SER282 THR241 VAL335 VAL336

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 overlap8Native recall0.53
Jaccard0.38RMSD-
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
270 3.043165241920178 -0.913959 -24.6827 6 14 8 0.53 0.20 - 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 -24.683kcal/mol
Ligand efficiency (LE) -0.9142kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.529
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 366.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.64
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.14kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 104.34kcal/mol
Minimised FF energy 75.20kcal/mol

SASA & burial

✓ computed
SASA (unbound) 648.6Ų
Total solvent-accessible surface area of free ligand
BSA total 506.5Ų
Buried surface area upon binding
BSA apolar 417.1Ų
Hydrophobic contacts buried
BSA polar 89.4Ų
Polar contacts buried
Fraction buried 78.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2482.5Ų
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 1386.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)