FAIRMol

Z55694322

Pose ID 9423 Compound 256 Pose 615

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 Z55694322
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
29.5 kcal/mol
Protein clashes
0
Internal clashes
13
Native overlap
contact recall 0.60, Jaccard 0.36, H-bond role recall 0.40
Burial
77%
Hydrophobic fit
83%
Reason: 13 internal clashes
13 intramolecular clashes 60% of hydrophobic surface is solvent-exposed (15/25 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 ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.653 kcal/mol/HA) ✓ Good fit quality (FQ -6.48) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (77% SASA buried) ✓ Lipophilic contacts well-matched (83%) ✗ High strain energy (29.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-21.554
kcal/mol
LE
-0.653
kcal/mol/HA
Fit Quality
-6.48
FQ (Leeson)
HAC
33
heavy atoms
MW
460
Da
LogP
5.10
cLogP
Strain ΔE
29.5 kcal/mol
SASA buried
77%
Lipo contact
83% BSA apolar/total
SASA unbound
738 Ų
Apolar buried
473 Ų

Interaction summary

HB 6 HY 9 PI 0 CLASH 0 ⚠ Exposure 60%

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.
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
60% of hydrophobic surface is solvent-exposed (15/25 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) 10 Exposed 15 LogP 5.1 H-bonds 6
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (3/5 atoms exposed)aliphatic chain/group (2 atoms exposed)
Final rank3.649Score-21.554
Inter norm-0.725Intra norm0.065
Top1000noExcludedno
Contacts19H-bonds6
Artifact reasongeometry warning; 13 clashes; 2 protein clashes; moderate strain Δ 29.3
Residues
ARG22 ARG242 ARG342 ARG50 ASN20 ASP44 ASP47 CYS26 GLN341 GLU343 GLU384 LEU25 LEU382 PRO340 SER282 SER410 THR21 THR285 VAL408

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
Jaccard0.36RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
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
620 0.9124878828115518 -0.742763 -23.1308 0 15 0 0.00 0.00 - no Open
616 1.5903297613763936 -0.695296 -20.3004 1 17 0 0.00 0.00 - no Open
617 1.6999776302048877 -0.781972 -26.1696 4 14 0 0.00 0.00 - no Open
606 2.1579267805035065 -0.935582 -30.0151 4 17 0 0.00 0.00 - no Open
619 2.321598553519423 -0.843726 -27.1331 2 17 0 0.00 0.00 - no Open
611 2.3721997365242466 -0.744991 -19.006 2 19 0 0.00 0.00 - no Open
632 2.5845937659195366 -0.808096 -24.1504 9 17 0 0.00 0.00 - no Open
628 3.0667722052197655 -0.693175 -22.2941 6 15 0 0.00 0.00 - no Open
615 3.648743788972634 -0.72495 -21.5538 6 19 9 0.60 0.40 - no Current
629 4.069678458429272 -0.67542 -22.0358 6 19 0 0.00 0.00 - no Open
630 4.138721914791422 -0.806706 -25.3439 5 18 0 0.00 0.00 - no Open
616 5.015225112007658 -0.909212 -28.7073 9 17 0 0.00 0.00 - no Open
641 5.605204418092712 -1.11254 -33.8589 9 20 0 0.00 0.00 - no Open
631 5.82846986775583 -0.854024 -26.3807 7 19 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 -21.554kcal/mol
Ligand efficiency (LE) -0.6531kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.480
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 459.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.10
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.50kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 37.09kcal/mol
Minimised FF energy 7.60kcal/mol

SASA & burial

✓ computed
SASA (unbound) 738.1Ų
Total solvent-accessible surface area of free ligand
BSA total 571.6Ų
Buried surface area upon binding
BSA apolar 472.7Ų
Hydrophobic contacts buried
BSA polar 98.9Ų
Polar contacts buried
Fraction buried 77.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2569.9Ų
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 1387.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)