FAIRMol

Z46080221

Pose ID 9454 Compound 420 Pose 646

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 Z46080221
PDB1NJJ

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Likely artefact or unreliable pose
Binding strong Geometry high Native mixed SASA done
Strain ΔE
28.1 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.47, Jaccard 0.39, H-bond role recall 0.40
Burial
63%
Hydrophobic fit
79%
Reason: no major geometry red flags detected
2 protein-contact clashes 61% of hydrophobic surface is solvent-exposed (14/23 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 ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.793 kcal/mol/HA) ✓ Good fit quality (FQ -7.58) ✓ Good H-bonds (4 bonds) ✓ Good burial (63% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ High strain energy (28.1 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Many internal clashes (11)
Score
-23.012
kcal/mol
LE
-0.793
kcal/mol/HA
Fit Quality
-7.58
FQ (Leeson)
HAC
29
heavy atoms
MW
400
Da
LogP
5.69
cLogP
Strain ΔE
28.1 kcal/mol
SASA buried
63%
Lipo contact
79% BSA apolar/total
SASA unbound
649 Ų
Apolar buried
323 Ų

Interaction summary

HB 4 HY 3 PI 0 CLASH 2 ⚠ Exposure 60%

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

🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
61% of hydrophobic surface is solvent-exposed (14/23 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 23 Buried (contacted) 9 Exposed 14 LogP 5.69 H-bonds 4
Exposed fragments: phenyl (4/5 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (4 atoms exposed)
Final rank1.383Score-23.012
Inter norm-0.789Intra norm-0.004
Top1000noExcludedno
Contacts10H-bonds4
Artifact reasongeometry warning; 11 clashes; 5 protein contact clashes; moderate strain Δ 28.1
Residues
ARG242 ARG337 ASP243 ASP385 GLU384 LEU339 PHE383 THR241 VAL335 VAL336

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
Jaccard0.39RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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
634 1.229663286025444 -0.860003 -22.5633 3 14 0 0.00 0.00 - no Open
646 1.3831576077061933 -0.789348 -23.0122 4 10 7 0.47 0.40 - no Current
641 1.4637618313678542 -0.876384 -27.3004 1 16 0 0.00 0.00 - no Open
636 1.4692895056320567 -0.927177 -26.8305 2 18 0 0.00 0.00 - no Open
658 2.21851663504723 -0.711934 -18.8607 2 13 0 0.00 0.00 - no Open
634 2.4397234516145594 -0.882085 -24.6779 2 16 0 0.00 0.00 - no Open
655 2.7182374703549375 -0.820596 -25.123 2 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 -23.012kcal/mol
Ligand efficiency (LE) -0.7935kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.575
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 399.8Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.69
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 28.09kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 60.42kcal/mol
Minimised FF energy 32.34kcal/mol

SASA & burial

✓ computed
SASA (unbound) 649.2Ų
Total solvent-accessible surface area of free ligand
BSA total 411.7Ų
Buried surface area upon binding
BSA apolar 323.5Ų
Hydrophobic contacts buried
BSA polar 88.2Ų
Polar contacts buried
Fraction buried 63.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2425.0Ų
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 1456.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)