FAIRMol

KB_Leish_49

Pose ID 8967 Compound 223 Pose 159

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_49
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
11.8 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.40, Jaccard 0.30, H-bond role recall 0.40
Burial
73%
Hydrophobic fit
81%
Reason: no major geometry red flags detected
2 protein-contact clashes 39% of hydrophobic surface appears solvent-exposed (7/18 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 (-0.989 kcal/mol/HA) ✓ Good fit quality (FQ -8.86) ✓ Good H-bonds (5 bonds) ✓ Deep burial (73% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ Moderate strain (11.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-23.727
kcal/mol
LE
-0.989
kcal/mol/HA
Fit Quality
-8.86
FQ (Leeson)
HAC
24
heavy atoms
MW
317
Da
LogP
2.91
cLogP
Strain ΔE
11.8 kcal/mol
SASA buried
73%
Lipo contact
81% BSA apolar/total
SASA unbound
544 Ų
Apolar buried
325 Ų

Interaction summary

HB 5 HY 8 PI 0 CLASH 2 ⚠ Exposure 38%
⚠️Partial hydrophobic solvent exposure
39% of hydrophobic surface appears solvent-exposed (7/18 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 18 Buried (contacted) 11 Exposed 7 LogP 2.91 H-bonds 5
Exposed fragments: phenyl (6/6 atoms exposed)aliphatic chain/group (1 atom exposed)
Final rank2.999Score-23.727
Inter norm-0.939Intra norm-0.049
Top1000noExcludedno
Contacts11H-bonds5
Artifact reasongeometry warning; 10 clashes; 2 protein clashes
Residues
ALA334 ARG337 ASP243 ASP385 GLU384 LEU339 MET386 PHE383 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 overlap6Native recall0.40
Jaccard0.30RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue3HB residue recall0.60

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
68 0.22469296612191395 -1.08856 -29.1854 0 12 0 0.00 0.00 - no Open
160 1.5726024064427766 -1.07565 -24.9848 4 14 0 0.00 0.00 - no Open
94 1.617507251105285 -1.11825 -28.0849 10 16 0 0.00 0.00 - no Open
99 1.9802018660741005 -1.17618 -31.881 7 14 0 0.00 0.00 - no Open
159 2.998706388267544 -0.939156 -23.7265 5 11 6 0.40 0.40 - no Current
71 4.1924342857793775 -1.13563 -25.7063 10 16 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 -23.727kcal/mol
Ligand efficiency (LE) -0.9886kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.860
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 24HA

Physicochemical properties

Molecular weight 317.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.91
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 11.81kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 111.60kcal/mol
Minimised FF energy 99.79kcal/mol

SASA & burial

✓ computed
SASA (unbound) 543.5Ų
Total solvent-accessible surface area of free ligand
BSA total 399.1Ų
Buried surface area upon binding
BSA apolar 324.8Ų
Hydrophobic contacts buried
BSA polar 74.4Ų
Polar contacts buried
Fraction buried 73.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2415.2Ų
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 1402.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)