FAIRMol

Z28654534

Pose ID 9324 Compound 1331 Pose 516

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 Z28654534
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
55.6 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.87, Jaccard 0.65, H-bond role recall 0.20
Burial
80%
Hydrophobic fit
73%
Reason: strain 55.6 kcal/mol
strain ΔE 55.6 kcal/mol 4 protein-contact clashes 4 intramolecular clashes 64% of hydrophobic surface is solvent-exposed (14/22 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 (-0.813 kcal/mol/HA) ✓ Good fit quality (FQ -8.13) ✓ Good H-bonds (3 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (73%) ✗ Extreme strain energy (55.6 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-27.636
kcal/mol
LE
-0.813
kcal/mol/HA
Fit Quality
-8.13
FQ (Leeson)
HAC
34
heavy atoms
MW
537
Da
LogP
5.55
cLogP
Final rank
2.6432
rank score
Inter norm
-0.717
normalised
Contacts
18
H-bonds 5
Strain ΔE
55.6 kcal/mol
SASA buried
80%
Lipo contact
73% BSA apolar/total
SASA unbound
782 Ų
Apolar buried
456 Ų

Interaction summary

HBA 3 HY 5 PI 0 CLASH 4

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 overlap13Native recall0.87
Jaccard0.65RMSD-
HB strict0Strict recall0.00
HB same residue+role1HB role recall0.20
HB same residue2HB residue recall0.40

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
512 1.0457665464335761 -0.827611 -32.8408 4 17 0 0.00 0.00 - no Open
516 2.6432215292813432 -0.717146 -27.6357 5 18 13 0.87 0.20 - no Current
552 2.6783167256633456 -0.633197 -20.9968 7 16 0 0.00 0.00 - no Open
536 2.744647409010315 -0.806953 -27.3947 5 16 0 0.00 0.00 - no Open
506 2.770523939821317 -0.844876 -36.7604 7 12 0 0.00 0.00 - no Open
534 2.8529260180878024 -0.877557 -28.2825 5 16 0 0.00 0.00 - no Open
512 3.6636062690961384 -0.814606 -31.3226 10 14 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 -27.636kcal/mol
Ligand efficiency (LE) -0.8128kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.133
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 537.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.55
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 55.62kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 64.71kcal/mol
Minimised FF energy 9.09kcal/mol

SASA & burial

✓ computed
SASA (unbound) 781.7Ų
Total solvent-accessible surface area of free ligand
BSA total 626.4Ų
Buried surface area upon binding
BSA apolar 456.0Ų
Hydrophobic contacts buried
BSA polar 170.3Ų
Polar contacts buried
Fraction buried 80.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 72.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2543.0Ų
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 1394.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)