FAIRMol

Z57281539

Pose ID 9443 Compound 187 Pose 635

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 Z57281539
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 high Native mixed SASA done
Strain ΔE
7.9 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.47, Jaccard 0.35, H-bond role recall 0.20
Burial
76%
Hydrophobic fit
83%
Reason: no major geometry red flags detected
2 protein-contact clashes 56% of hydrophobic surface appears solvent-exposed (9/16 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Low conformational strain (7.9 kcal/mol) ✓ Excellent LE (-1.135 kcal/mol/HA) ✓ Good fit quality (FQ -9.68) ✓ Good H-bonds (3 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (83%) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Internal clashes (8)
Score
-23.827
kcal/mol
LE
-1.135
kcal/mol/HA
Fit Quality
-9.68
FQ (Leeson)
HAC
21
heavy atoms
MW
301
Da
LogP
4.12
cLogP
Final rank
0.7798
rank score
Inter norm
-1.039
normalised
Contacts
12
H-bonds 6
Strain ΔE
7.9 kcal/mol
SASA buried
76%
Lipo contact
83% BSA apolar/total
SASA unbound
508 Ų
Apolar buried
317 Ų

Interaction summary

HBD 2 HBA 1 HY 3 PI 0 CLASH 2

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

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
Jaccard0.35RMSD-
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
635 0.7797543063660407 -1.03864 -23.8267 6 12 7 0.47 0.20 - no Current
629 1.4429483420959466 -1.27465 -24.7705 4 16 0 0.00 0.00 - no Open
651 2.2720410504418993 -1.07823 -21.4419 4 11 0 0.00 0.00 - no Open
651 3.201970499986924 -1.26973 -25.8745 6 16 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 -23.827kcal/mol
Ligand efficiency (LE) -1.1346kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.678
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 21HA

Physicochemical properties

Molecular weight 300.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.12
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 7.85kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 57.45kcal/mol
Minimised FF energy 49.60kcal/mol

SASA & burial

✓ computed
SASA (unbound) 507.8Ų
Total solvent-accessible surface area of free ligand
BSA total 383.3Ų
Buried surface area upon binding
BSA apolar 317.0Ų
Hydrophobic contacts buried
BSA polar 66.3Ų
Polar contacts buried
Fraction buried 75.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2369.7Ų
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 1407.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)