FAIRMol

KB_Leish_48

Pose ID 8966 Compound 245 Pose 158

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 KB_Leish_48
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
Promising but geometrically suspicious
Binding strong Geometry low Native mixed SASA done
Strain ΔE
16.5 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.47, Jaccard 0.33, H-bond role recall 0.20
Burial
72%
Hydrophobic fit
80%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular 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 (-0.743 kcal/mol/HA) ✓ Good fit quality (FQ -6.85) ✓ Good H-bonds (5 bonds) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ Moderate strain (16.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-19.323
kcal/mol
LE
-0.743
kcal/mol/HA
Fit Quality
-6.85
FQ (Leeson)
HAC
26
heavy atoms
MW
367
Da
LogP
3.69
cLogP
Strain ΔE
16.5 kcal/mol
SASA buried
72%
Lipo contact
80% BSA apolar/total
SASA unbound
616 Ų
Apolar buried
354 Ų

Interaction summary

HB 5 HY 9 PI 1 CLASH 6 ⚠ 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 3.69 H-bonds 5
Exposed fragments: phenyl (6/6 atoms exposed)aliphatic chain/group (2 atoms exposed)
Final rank4.169Score-19.323
Inter norm-0.946Intra norm0.201
Top1000noExcludedno
Contacts13H-bonds5
Artifact reasongeometry warning; 11 clashes; 2 protein clashes
Residues
ALA244 ARG337 ASP243 ASP385 GLU384 LEU339 LEU382 MET386 PHE383 PRO338 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 overlap7Native recall0.47
Jaccard0.33RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
HB same residue2HB residue recall0.40

HB · H-bonds

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

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
151 0.32172865327613354 -1.26883 -25.9434 11 16 0 0.00 0.00 - no Open
120 1.4182620796154546 -0.869502 -18.8868 0 18 0 0.00 0.00 - no Open
159 1.6639623900139582 -1.07838 -24.547 5 18 0 0.00 0.00 - no Open
115 2.052194704544698 -1.01732 -26.0095 2 19 0 0.00 0.00 - no Open
155 2.6074809669883345 -0.786201 -16.7503 5 10 0 0.00 0.00 - no Open
98 2.6369590614426244 -1.2378 -24.8459 5 16 0 0.00 0.00 - no Open
88 3.6279790838447203 -1.06416 -18.492 11 18 0 0.00 0.00 - no Open
158 4.168810452369634 -0.945702 -19.3234 5 13 7 0.47 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 -19.323kcal/mol
Ligand efficiency (LE) -0.7432kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.847
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 366.8Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.69
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 16.51kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 33.85kcal/mol
Minimised FF energy 17.34kcal/mol

SASA & burial

✓ computed
SASA (unbound) 616.4Ų
Total solvent-accessible surface area of free ligand
BSA total 442.7Ų
Buried surface area upon binding
BSA apolar 354.0Ų
Hydrophobic contacts buried
BSA polar 88.7Ų
Polar contacts buried
Fraction buried 71.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2451.2Ų
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 1417.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)