FAIRMol

KB_HAT_169

Pose ID 8951 Compound 1099 Pose 143

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 KB_HAT_169
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 strong SASA done
Strain ΔE
24.6 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.60, Jaccard 0.50, H-bond role recall 0.20
Burial
70%
Hydrophobic fit
79%
Reason: no major geometry red flags detected
1 protein-contact clashes 73% of hydrophobic surface is solvent-exposed (16/22 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Daphnia EC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.709 kcal/mol/HA) ✓ Good fit quality (FQ -6.84) ✓ Good H-bonds (4 bonds) ✓ Deep burial (70% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ High strain energy (24.6 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-21.279
kcal/mol
LE
-0.709
kcal/mol/HA
Fit Quality
-6.84
FQ (Leeson)
HAC
30
heavy atoms
MW
426
Da
LogP
3.31
cLogP
Final rank
2.2393
rank score
Inter norm
-0.768
normalised
Contacts
12
H-bonds 6
Strain ΔE
24.6 kcal/mol
SASA buried
70%
Lipo contact
79% BSA apolar/total
SASA unbound
700 Ų
Apolar buried
386 Ų

Interaction summary

HBD 1 HBA 3 HY 2 PI 0 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

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 overlap9Native recall0.60
Jaccard0.50RMSD-
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
124 1.1693961275555256 -0.896864 -25.4852 4 17 0 0.00 0.00 - no Open
134 1.189017948925249 -1.09425 -32.209 4 15 0 0.00 0.00 - no Open
102 1.6571597359003754 -1.05105 -26.9128 7 19 0 0.00 0.00 - no Open
143 2.2393124046858035 -0.767808 -21.2791 6 12 9 0.60 0.20 - no Current
91 2.526048550418099 -0.787681 -25.4495 5 11 0 0.00 0.00 - no Open
138 2.800038419761972 -0.6671 -19.022 6 10 0 0.00 0.00 - no Open
109 3.0147675137178105 -0.829773 -24.6469 5 15 0 0.00 0.00 - no Open
111 3.6130192592374177 -0.724067 -19.6786 4 12 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 -21.279kcal/mol
Ligand efficiency (LE) -0.7093kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.842
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 425.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.31
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 24.55kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 30.53kcal/mol
Minimised FF energy 5.98kcal/mol

SASA & burial

✓ computed
SASA (unbound) 699.9Ų
Total solvent-accessible surface area of free ligand
BSA total 490.6Ų
Buried surface area upon binding
BSA apolar 385.8Ų
Hydrophobic contacts buried
BSA polar 104.8Ų
Polar contacts buried
Fraction buried 70.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2516.8Ų
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 1383.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)