FAIRMol

OHD_TC2_88

Pose ID 8929 Compound 437 Pose 121

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 OHD_TC2_88
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
37.7 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.47, Jaccard 0.33, H-bond role recall 0.20
Burial
68%
Hydrophobic fit
88%
Reason: no major geometry red flags detected
1 protein-contact clashes 100% of hydrophobic surface is solvent-exposed (31/31 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 (-0.597 kcal/mol/HA) ✓ Good fit quality (FQ -6.07) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (68% SASA buried) ✓ Lipophilic contacts well-matched (88%) ✗ Very high strain energy (37.7 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-21.498
kcal/mol
LE
-0.597
kcal/mol/HA
Fit Quality
-6.07
FQ (Leeson)
HAC
36
heavy atoms
MW
490
Da
LogP
4.72
cLogP
Strain ΔE
37.7 kcal/mol
SASA buried
68%
Lipo contact
88% BSA apolar/total
SASA unbound
765 Ų
Apolar buried
457 Ų

Interaction summary

HB 7 HY 0 PI 0 CLASH 1 ⚠ Exposure 100%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
100% of hydrophobic surface is solvent-exposed (31/31 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 31 Buried (contacted) 0 Exposed 31 LogP 4.72 H-bonds 7
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (5/5 atoms exposed)phenyl (2/5 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (6 atoms exposed)
Final rank2.933Score-21.498
Inter norm-0.611Intra norm0.014
Top1000noExcludedno
Contacts13H-bonds7
Artifact reasongeometry warning; 13 clashes; 1 protein clash; high strain Δ 37.7
Residues
ARG22 ARG242 ARG50 ASN20 ASP243 ASP385 ASP44 ASP47 GLU384 SER282 THR21 THR241 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 overlap7Native recall0.47
Jaccard0.33RMSD-
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

No hy · hydrophobic contacts detected for this pose.

CLASH · Clashes

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
79 1.109233937225041 -0.77582 -29.4513 7 18 0 0.00 0.00 - no Open
99 2.2844844413498375 -0.677487 -25.3613 6 18 0 0.00 0.00 - no Open
86 2.285619033236407 -0.680581 -25.3614 4 13 0 0.00 0.00 - no Open
111 2.5096473383532834 -0.718329 -22.3864 4 18 0 0.00 0.00 - no Open
121 2.9327648682862955 -0.610939 -21.4979 7 13 7 0.47 0.20 - no Current
85 3.3388170544119062 -0.601922 -22.1846 3 12 0 0.00 0.00 - no Open
69 3.4535609097157534 -0.704469 -26.6729 4 18 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 -21.498kcal/mol
Ligand efficiency (LE) -0.5972kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.069
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 489.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.72
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 37.66kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 109.85kcal/mol
Minimised FF energy 72.18kcal/mol

SASA & burial

✓ computed
SASA (unbound) 765.3Ų
Total solvent-accessible surface area of free ligand
BSA total 517.3Ų
Buried surface area upon binding
BSA apolar 457.4Ų
Hydrophobic contacts buried
BSA polar 59.9Ų
Polar contacts buried
Fraction buried 67.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 88.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2666.5Ų
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 1382.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)