FAIRMol

OHD_ACDS_35

Pose ID 9475 Compound 898 Pose 667

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_ACDS_35
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
Promising but geometrically suspicious
Binding strong Geometry low Native mixed SASA done
Strain ΔE
44.2 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.40, Jaccard 0.29, H-bond role recall 0.40
Burial
68%
Hydrophobic fit
88%
Reason: strain 44.2 kcal/mol
strain ΔE 44.2 kcal/mol 3 protein-contact clashes 3 intramolecular clashes 76% of hydrophobic surface is solvent-exposed (19/25 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 (-0.579 kcal/mol/HA) ✓ Good fit quality (FQ -5.75) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (68% SASA buried) ✓ Lipophilic contacts well-matched (88%) ✗ Extreme strain energy (44.2 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Many internal clashes (11)
Score
-19.116
kcal/mol
LE
-0.579
kcal/mol/HA
Fit Quality
-5.75
FQ (Leeson)
HAC
33
heavy atoms
MW
569
Da
LogP
6.90
cLogP
Strain ΔE
44.2 kcal/mol
SASA buried
68%
Lipo contact
88% BSA apolar/total
SASA unbound
773 Ų
Apolar buried
460 Ų

Interaction summary

HB 6 HY 4 PI 0 CLASH 3 ⚠ Exposure 76%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
76% of hydrophobic surface is solvent-exposed (19/25 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 25 Buried (contacted) 6 Exposed 19 LogP 6.9 H-bonds 6
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (2/5 atoms exposed)phenyl (4/5 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
Final rank1.502Score-19.116
Inter norm-0.703Intra norm0.123
Top1000noExcludedno
Contacts12H-bonds6
Artifact reasongeometry warning; 11 clashes; 5 protein contact clashes; high strain Δ 44.1
Residues
ALA334 ARG337 ASP243 ASP385 GLU384 LEU339 PHE383 SER282 THR21 THR285 VAL335 VAL336

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 overlap6Native recall0.40
Jaccard0.29RMSD-
HB strict1Strict recall0.17
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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
667 1.5018972035925722 -0.702622 -19.1165 6 12 6 0.40 0.40 - no Current
665 2.148044640714732 -0.875167 -27.3833 5 19 0 0.00 0.00 - no Open
674 2.250138561538429 -0.839896 -26.5988 3 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 -19.116kcal/mol
Ligand efficiency (LE) -0.5793kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.748
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 569.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 6.90
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 44.21kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 109.50kcal/mol
Minimised FF energy 65.29kcal/mol

SASA & burial

✓ computed
SASA (unbound) 772.7Ų
Total solvent-accessible surface area of free ligand
BSA total 524.8Ų
Buried surface area upon binding
BSA apolar 460.2Ų
Hydrophobic contacts buried
BSA polar 64.6Ų
Polar contacts buried
Fraction buried 67.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 87.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2563.9Ų
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 1474.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)