FAIRMol

OHD_TB2021_64

Pose ID 8876 Compound 3718 Pose 68

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_TB2021_64
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 strong SASA done
Strain ΔE
43.2 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.60, Jaccard 0.32, H-bond role recall 0.20
Burial
83%
Hydrophobic fit
89%
Reason: strain 43.2 kcal/mol
strain ΔE 43.2 kcal/mol 2 protein-contact clashes 50% of hydrophobic surface appears solvent-exposed (14/28 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.604 kcal/mol/HA) ✓ Good fit quality (FQ -6.09) ✓ Good H-bonds (5 bonds) ✓ Deep burial (83% SASA buried) ✓ Lipophilic contacts well-matched (89%) ✗ Extreme strain energy (43.2 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Many internal clashes (18)
Score
-21.127
kcal/mol
LE
-0.604
kcal/mol/HA
Fit Quality
-6.09
FQ (Leeson)
HAC
35
heavy atoms
MW
469
Da
LogP
3.36
cLogP
Strain ΔE
43.2 kcal/mol
SASA buried
83%
Lipo contact
89% BSA apolar/total
SASA unbound
837 Ų
Apolar buried
620 Ų

Interaction summary

HB 5 HY 15 PI 0 CLASH 2 ⚠ Exposure 50%

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

⚠️Partial hydrophobic solvent exposure
50% of hydrophobic surface appears solvent-exposed (14/28 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 28 Buried (contacted) 14 Exposed 14 LogP 3.36 H-bonds 5
Exposed fragments: phenyl (5/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (5 atoms exposed)
Final rank2.079Score-21.127
Inter norm-0.696Intra norm0.090
Top1000noExcludedno
Contacts22H-bonds5
Artifact reasongeometry warning; 18 clashes; 5 protein contact clashes; moderate strain Δ 28.9
Residues
ARG22 ARG342 ARG50 ASN20 ASP44 CYS26 GLN341 GLU343 GLU384 LEU25 LEU339 LEU350 LEU372 LEU382 PRO338 PRO340 PRO344 PRO373 THR21 THR285 TYR370 TYR371

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 overlap9Native recall0.60
Jaccard0.32RMSD-
HB strict0Strict recall0.00
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.20

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
43 2.0051270212081547 -0.669791 -24.1889 7 20 0 0.00 0.00 - no Open
68 2.0793113617384 -0.695575 -21.1268 5 22 9 0.60 0.20 - no Current
52 2.679454707604096 -0.724946 -19.2577 4 20 0 0.00 0.00 - no Open
65 3.1791525052664604 -0.635801 -16.9878 4 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 -21.127kcal/mol
Ligand efficiency (LE) -0.6036kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.088
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 35HA

Physicochemical properties

Molecular weight 468.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.36
Lipinski: ≤ 5
Rotatable bonds 11

Conformational strain (MMFF94s)

Strain energy (ΔE) 43.16kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 63.89kcal/mol
Minimised FF energy 20.73kcal/mol

SASA & burial

✓ computed
SASA (unbound) 836.9Ų
Total solvent-accessible surface area of free ligand
BSA total 695.8Ų
Buried surface area upon binding
BSA apolar 619.7Ų
Hydrophobic contacts buried
BSA polar 76.1Ų
Polar contacts buried
Fraction buried 83.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2686.9Ų
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 1407.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)