FAIRMol

ulfkktlib_2300

Pose ID 9015 Compound 2712 Pose 207

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 ulfkktlib_2300
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 strong SASA done
Strain ΔE
31.4 kcal/mol
Protein clashes
0
Internal clashes
6
Native overlap
contact recall 0.47, Jaccard 0.37, H-bond role recall 0.60
Burial
76%
Hydrophobic fit
82%
Reason: 6 internal clashes
6 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.977 kcal/mol/HA) ✓ Good fit quality (FQ -8.18) ✓ Good H-bonds (4 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ Very high strain energy (31.4 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (6)
Score
-19.540
kcal/mol
LE
-0.977
kcal/mol/HA
Fit Quality
-8.18
FQ (Leeson)
HAC
20
heavy atoms
MW
268
Da
LogP
1.39
cLogP
Final rank
2.7116
rank score
Inter norm
-1.099
normalised
Contacts
11
H-bonds 5
Strain ΔE
31.4 kcal/mol
SASA buried
76%
Lipo contact
82% BSA apolar/total
SASA unbound
514 Ų
Apolar buried
323 Ų

Interaction summary

HBD 3 HBA 1 HY 2 PI 0 CLASH 0

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 3.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.

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 strict2Strict recall0.33
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.60

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
217 -0.2376045864496836 -1.60016 -30.9228 5 13 0 0.00 0.00 - no Open
215 -0.20071805542564133 -1.59887 -30.9614 5 13 0 0.00 0.00 - no Open
186 0.08567012867872399 -1.61571 -31.3363 5 13 0 0.00 0.00 - no Open
182 0.11636898087690341 -1.61336 -31.302 5 14 0 0.00 0.00 - no Open
183 0.1270339347097935 -1.6158 -31.3544 5 13 0 0.00 0.00 - no Open
134 1.8748499275367299 -1.46971 -28.8277 6 21 0 0.00 0.00 - no Open
207 2.711615751910029 -1.09904 -19.5402 5 11 7 0.47 0.60 - 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 -19.540kcal/mol
Ligand efficiency (LE) -0.9770kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.176
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 20HA

Physicochemical properties

Molecular weight 268.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.39
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 31.41kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 63.03kcal/mol
Minimised FF energy 31.63kcal/mol

SASA & burial

✓ computed
SASA (unbound) 514.0Ų
Total solvent-accessible surface area of free ligand
BSA total 393.2Ų
Buried surface area upon binding
BSA apolar 322.7Ų
Hydrophobic contacts buried
BSA polar 70.5Ų
Polar contacts buried
Fraction buried 76.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2399.6Ų
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 1391.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)