FAIRMol

KB_HAT_8

Pose ID 8930 Compound 157 Pose 122

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_HAT_8
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
44.0 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.47, Jaccard 0.37, H-bond role recall 0.20
Burial
65%
Hydrophobic fit
73%
Reason: strain 44.0 kcal/mol
strain ΔE 44.0 kcal/mol 2 protein-contact clashes 54% of hydrophobic surface appears solvent-exposed (13/24 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 (-0.711 kcal/mol/HA) ✓ Good fit quality (FQ -7.06) ✓ Good H-bonds (4 bonds) ✓ Deep burial (65% SASA buried) ✓ Lipophilic contacts well-matched (73%) ✗ Extreme strain energy (44.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-23.471
kcal/mol
LE
-0.711
kcal/mol/HA
Fit Quality
-7.06
FQ (Leeson)
HAC
33
heavy atoms
MW
471
Da
LogP
-0.41
cLogP
Strain ΔE
44.0 kcal/mol
SASA buried
65%
Lipo contact
73% BSA apolar/total
SASA unbound
692 Ų
Apolar buried
330 Ų

Interaction summary

HB 4 HY 4 PI 0 CLASH 2 ⚠ Exposure 54%
⚠️Partial hydrophobic solvent exposure
54% of hydrophobic surface appears solvent-exposed (13/24 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 24 Buried (contacted) 11 Exposed 13 LogP -0.41 H-bonds 4
Exposed fragments: phenyl (4/5 atoms exposed)phenyl (6/6 atoms exposed)phenyl (5/6 atoms exposed)aliphatic chain/group (2 atoms exposed)
Final rank4.087Score-23.471
Inter norm-0.776Intra norm0.065
Top1000noExcludedno
Contacts11H-bonds4
Artifact reasongeometry warning; 13 clashes; 2 protein clashes; high strain Δ 44.0
Residues
ARG242 ARG337 ASP243 ASP385 GLU384 LEU339 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
Jaccard0.37RMSD-
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
94 0.8968455091820249 -1.00617 -31.9861 3 16 0 0.00 0.00 - no Open
113 1.2787634175823281 -0.946846 -30.1424 6 16 0 0.00 0.00 - no Open
87 2.5833270075649684 -0.72041 -23.1843 6 14 0 0.00 0.00 - no Open
91 3.9910595760413226 -0.782021 -23.5128 8 14 0 0.00 0.00 - no Open
122 4.087349949128517 -0.776292 -23.4709 4 11 7 0.47 0.20 - no Current
70 4.520502492898979 -0.836386 -22.2364 11 18 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 -23.471kcal/mol
Ligand efficiency (LE) -0.7112kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.057
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 470.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) -0.41
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 43.99kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 301.10kcal/mol
Minimised FF energy 257.12kcal/mol

SASA & burial

✓ computed
SASA (unbound) 691.6Ų
Total solvent-accessible surface area of free ligand
BSA total 450.4Ų
Buried surface area upon binding
BSA apolar 330.0Ų
Hydrophobic contacts buried
BSA polar 120.5Ų
Polar contacts buried
Fraction buried 65.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 73.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2473.1Ų
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 1422.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)