FAIRMol

Z49641947

Pose ID 9455 Compound 4139 Pose 647

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 Z49641947
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
13.2 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.53, Jaccard 0.44, H-bond role recall 0.20
Burial
69%
Hydrophobic fit
78%
Reason: no major geometry red flags detected
1 protein-contact clashes 81% of hydrophobic surface is solvent-exposed (17/21 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.887 kcal/mol/HA) ✓ Good fit quality (FQ -8.27) ✓ Good H-bonds (5 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Moderate strain (13.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-23.942
kcal/mol
LE
-0.887
kcal/mol/HA
Fit Quality
-8.27
FQ (Leeson)
HAC
27
heavy atoms
MW
372
Da
LogP
4.51
cLogP
Strain ΔE
13.2 kcal/mol
SASA buried
69%
Lipo contact
78% BSA apolar/total
SASA unbound
640 Ų
Apolar buried
346 Ų

Interaction summary

HB 5 HY 1 PI 0 CLASH 1 ⚠ Exposure 81%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
81% of hydrophobic surface is solvent-exposed (17/21 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Non-polar atoms 21 Buried (contacted) 4 Exposed 17 LogP 4.51 H-bonds 5
Exposed fragments: phenyl (5/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (5/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
Final rank2.405Score-23.942
Inter norm-0.878Intra norm-0.008
Top1000noExcludedno
Contacts11H-bonds5
Artifact reasongeometry warning; 14 clashes; 1 protein clash
Residues
ARG242 ARG337 ASP243 ASP385 ASP47 GLU384 GLY240 LEU339 LYS51 SER282 THR241

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
Jaccard0.44RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
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
647 2.404673108642506 -0.878391 -23.9425 5 11 8 0.53 0.20 - no Current
666 3.461997168903399 -0.997911 -26.729 10 14 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 -23.942kcal/mol
Ligand efficiency (LE) -0.8868kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.273
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 372.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.51
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 13.17kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 118.77kcal/mol
Minimised FF energy 105.60kcal/mol

SASA & burial

✓ computed
SASA (unbound) 639.8Ų
Total solvent-accessible surface area of free ligand
BSA total 441.8Ų
Buried surface area upon binding
BSA apolar 346.3Ų
Hydrophobic contacts buried
BSA polar 95.5Ų
Polar contacts buried
Fraction buried 69.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2470.2Ų
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 1410.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)