FAIRMol

OHD_Leishmania_126

Pose ID 8817 Compound 398 Pose 9

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_Leishmania_126
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
24.4 kcal/mol
Protein clashes
3
Internal clashes
17
Native overlap
contact recall 0.73, Jaccard 0.48, H-bond role recall 0.40
Burial
81%
Hydrophobic fit
71%
Reason: 17 internal clashes
3 protein-contact clashes 17 intramolecular clashes 65% of hydrophobic surface is solvent-exposed (13/20 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 (-0.628 kcal/mol/HA) ✓ Good fit quality (FQ -6.18) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (81% SASA buried) ✓ Lipophilic contacts well-matched (71%) ✗ High strain energy (24.4 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Many internal clashes (17)
Score
-20.101
kcal/mol
LE
-0.628
kcal/mol/HA
Fit Quality
-6.18
FQ (Leeson)
HAC
32
heavy atoms
MW
455
Da
LogP
1.30
cLogP
Strain ΔE
24.4 kcal/mol
SASA buried
81%
Lipo contact
71% BSA apolar/total
SASA unbound
750 Ų
Apolar buried
432 Ų

Interaction summary

HB 9 HY 5 PI 0 CLASH 0 ⚠ Exposure 65%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
65% of hydrophobic surface is solvent-exposed (13/20 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 20 Buried (contacted) 7 Exposed 13 LogP 1.3 H-bonds 9
Exposed fragments: pyridyl (5/6 atoms exposed)pyridyl (5/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
Final rank1.736Score-20.101
Inter norm-0.703Intra norm0.075
Top1000noExcludedno
Contacts19H-bonds9
Artifact reasongeometry warning; 17 clashes; 3 protein contact clashes; moderate strain Δ 24.4
Residues
ARG22 ARG342 ARG50 ASN20 ASP385 ASP44 ASP47 CYS26 GLN341 GLU343 GLU384 LEU25 LEU339 LEU382 PRO340 PRO344 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 overlap11Native recall0.73
Jaccard0.48RMSD-
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

No clash · clashes detected for this pose.

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
9 1.7359748197207696 -0.702858 -20.101 9 19 11 0.73 0.40 - no Current
11 2.345239731061546 -0.832378 -24.7526 6 21 0 0.00 0.00 - no Open
8 2.5166177658116644 -0.900904 -26.4385 6 15 0 0.00 0.00 - no Open
9 2.799838389457709 -0.852745 -25.4636 9 21 0 0.00 0.00 - no Open
5 3.1171657565070787 -0.913652 -17.4952 6 21 0 0.00 0.00 - no Open
5 3.2083135537940506 -1.20929 -37.0925 5 16 0 0.00 0.00 - no Open
7 3.2558005905835374 -0.870375 -27.8055 8 18 0 0.00 0.00 - no Open
6 4.25676227034814 -0.89215 -26.2924 12 20 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 -20.101kcal/mol
Ligand efficiency (LE) -0.6282kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.177
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 454.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.30
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 24.41kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -29.72kcal/mol
Minimised FF energy -54.13kcal/mol

SASA & burial

✓ computed
SASA (unbound) 750.2Ų
Total solvent-accessible surface area of free ligand
BSA total 606.0Ų
Buried surface area upon binding
BSA apolar 431.9Ų
Hydrophobic contacts buried
BSA polar 174.1Ų
Polar contacts buried
Fraction buried 80.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 71.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2512.0Ų
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 1367.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)