FAIRMol

ulfkktlib_1639

Pose ID 9011 Compound 4167 Pose 203

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 ulfkktlib_1639
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 medium Native mixed SASA done
Strain ΔE
14.0 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.53, Jaccard 0.35, H-bond role recall 0.40
Burial
76%
Hydrophobic fit
94%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes 57% of hydrophobic surface appears solvent-exposed (16/28 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 (-0.675 kcal/mol/HA) ✓ Good fit quality (FQ -6.76) ✓ Good H-bonds (3 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (94%) ✗ Moderate strain (14.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (16)
Score
-22.955
kcal/mol
LE
-0.675
kcal/mol/HA
Fit Quality
-6.76
FQ (Leeson)
HAC
34
heavy atoms
MW
449
Da
LogP
4.59
cLogP
Strain ΔE
14.0 kcal/mol
SASA buried
76%
Lipo contact
94% BSA apolar/total
SASA unbound
749 Ų
Apolar buried
540 Ų

Interaction summary

HB 3 HY 3 PI 0 CLASH 3 ⚠ Exposure 57%
⚠️Partial hydrophobic solvent exposure
57% of hydrophobic surface appears solvent-exposed (16/28 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 28 Buried (contacted) 12 Exposed 16 LogP 4.59 H-bonds 3
Exposed fragments: phenyl (4/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (4/5 atoms exposed)aliphatic chain/group (2 atoms exposed)
Final rank3.019Score-22.955
Inter norm-0.670Intra norm-0.006
Top1000noExcludedno
Contacts16H-bonds3
Artifact reasongeometry warning; 16 clashes; 1 protein clash
Residues
ARG242 ARG337 ASP243 ASP385 ASP47 GLU384 GLY240 LEU339 LYS51 PHE284 PHE383 SER282 THR21 THR241 THR285 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 overlap8Native recall0.53
Jaccard0.35RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
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

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
174 1.5953454974067567 -1.04275 -30.9105 6 24 0 0.00 0.00 - no Open
228 1.8086522717655165 -0.657332 -21.5359 3 13 0 0.00 0.00 - no Open
323 2.4019885584747827 -0.689268 -19.4794 3 14 0 0.00 0.00 - no Open
315 2.403157705090617 -0.684753 -21.7406 3 14 0 0.00 0.00 - no Open
203 3.019473352449312 -0.669603 -22.9554 3 16 8 0.53 0.40 - no Current
325 3.239213976956587 -0.705168 -21.9124 3 13 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 -22.955kcal/mol
Ligand efficiency (LE) -0.6752kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.756
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 448.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.59
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 13.99kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 10.38kcal/mol
Minimised FF energy -3.61kcal/mol

SASA & burial

✓ computed
SASA (unbound) 749.5Ų
Total solvent-accessible surface area of free ligand
BSA total 573.6Ų
Buried surface area upon binding
BSA apolar 539.9Ų
Hydrophobic contacts buried
BSA polar 33.8Ų
Polar contacts buried
Fraction buried 76.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 94.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2637.2Ų
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 1380.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)