FAIRMol

Z2588038997

Pose ID 9365 Compound 4235 Pose 557

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 Z2588038997
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
16.7 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.53, Jaccard 0.33, H-bond role recall 0.20
Burial
84%
Hydrophobic fit
90%
Reason: no major geometry red flags detected
1 protein-contact clashes 45% of hydrophobic surface appears solvent-exposed (10/22 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 (-1.015 kcal/mol/HA) ✓ Good fit quality (FQ -9.35) ✓ Good H-bonds (4 bonds) ✓ Deep burial (84% SASA buried) ✓ Lipophilic contacts well-matched (90%) ✗ Moderate strain (16.7 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (17)
Score
-26.379
kcal/mol
LE
-1.015
kcal/mol/HA
Fit Quality
-9.35
FQ (Leeson)
HAC
26
heavy atoms
MW
367
Da
LogP
5.51
cLogP
Strain ΔE
16.7 kcal/mol
SASA buried
84%
Lipo contact
90% BSA apolar/total
SASA unbound
602 Ų
Apolar buried
452 Ų

Interaction summary

HB 4 HY 9 PI 0 CLASH 1 ⚠ Exposure 45%
⚠️Partial hydrophobic solvent exposure
45% of hydrophobic surface appears solvent-exposed (10/22 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 22 Buried (contacted) 12 Exposed 10 LogP 5.51 H-bonds 4
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)
Final rank4.194Score-26.379
Inter norm-1.099Intra norm0.084
Top1000noExcludedno
Contacts17H-bonds4
Artifact reasongeometry warning; 17 clashes; 3 protein clashes
Residues
ALA283 ARG22 ARG342 ARG50 ASN20 ASP44 ASP47 CYS26 GLN341 GLU343 GLU384 LEU25 LEU382 PRO340 SER282 THR21 THR285

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
Jaccard0.33RMSD-
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
552 2.0875416513787575 -1.21921 -25.8904 2 19 0 0.00 0.00 - no Open
557 4.193623103659279 -1.09866 -26.3789 4 17 8 0.53 0.20 - 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 -26.379kcal/mol
Ligand efficiency (LE) -1.0146kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.348
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 366.8Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.51
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 16.71kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 65.12kcal/mol
Minimised FF energy 48.40kcal/mol

SASA & burial

✓ computed
SASA (unbound) 601.6Ų
Total solvent-accessible surface area of free ligand
BSA total 504.1Ų
Buried surface area upon binding
BSA apolar 451.8Ų
Hydrophobic contacts buried
BSA polar 52.3Ų
Polar contacts buried
Fraction buried 83.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2480.4Ų
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 1395.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)