FAIRMol

Z92021212

Pose ID 11390 Compound 2778 Pose 547

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T17
T. brucei TR (Doorstop site) T. brucei Doorstop site
Ligand Z92021212
PDB5S9T

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
18.2 kcal/mol
Protein clashes
3
Internal clashes
13
Native overlap
contact recall 0.75, Jaccard 0.43, H-bond role recall 1.00
Burial
82%
Hydrophobic fit
74%
Reason: 13 internal clashes
3 protein-contact clashes 13 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.742 kcal/mol/HA) ✓ Good fit quality (FQ -7.36) ✓ Good H-bonds (3 bonds) ✓ Deep burial (82% SASA buried) ✓ Lipophilic contacts well-matched (74%) ✗ Moderate strain (18.2 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Many internal clashes (13)
Score
-24.471
kcal/mol
LE
-0.742
kcal/mol/HA
Fit Quality
-7.36
FQ (Leeson)
HAC
33
heavy atoms
MW
475
Da
LogP
4.89
cLogP
Final rank
1.3092
rank score
Inter norm
-0.749
normalised
Contacts
18
H-bonds 3
Strain ΔE
18.2 kcal/mol
SASA buried
82%
Lipo contact
74% BSA apolar/total
SASA unbound
765 Ų
Apolar buried
465 Ų

Interaction summary

HBD 1 HBA 2 HY 8 PI 2 CLASH 0

HBD/HBA · H-bonds (geometric)

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

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap9Native recall0.75
Jaccard0.43RMSD-
HB strict1Strict recall1.00
HB same residue+role1HB role recall1.00
HB same residue1HB residue recall1.00

Protein summary

1033 residues
Protein targetT17Atoms15160
Residues1033Chains2
Residue summaryVAL:1536; LEU:1387; LYS:1386; ILE:1064; GLU:900; THR:868; ARG:816; PHE:800; ALA:780; ASN:700; PRO:686; GLY:672; SER:616; TYR:588; ASP:528; MET:408

Receptor context

2 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 2 Excluded HETATM 0
Kept cofactors / ions
A:FAD501 B:FAD501

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
495 0.7636299668614087 -0.944298 -31.6224 5 18 0 0.00 0.00 - no Open
547 1.3092080501017846 -0.748973 -24.4712 3 18 9 0.75 1.00 - no Current
568 2.1136660153511535 -0.774735 -23.372 2 20 0 0.00 0.00 - no Open
508 2.363635055852463 -0.896611 -27.6232 10 17 0 0.00 0.00 - no Open
506 2.512933131032401 -0.972941 -29.8517 9 26 0 0.00 0.00 - no Open
547 2.7275152541986074 -0.63594 -20.531 2 15 0 0.00 0.00 - no Open
530 3.647484580817899 -0.738297 -22.9327 4 17 0 0.00 0.00 - no Open
517 3.7491718068183464 -0.73996 -23.338 12 20 0 0.00 0.00 - no Open
555 4.578227095484919 -0.730577 -20.9774 4 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 -24.471kcal/mol
Ligand efficiency (LE) -0.7416kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.358
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 474.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.89
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 18.24kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 89.03kcal/mol
Minimised FF energy 70.79kcal/mol

SASA & burial

✓ computed
SASA (unbound) 765.2Ų
Total solvent-accessible surface area of free ligand
BSA total 626.7Ų
Buried surface area upon binding
BSA apolar 464.8Ų
Hydrophobic contacts buried
BSA polar 161.9Ų
Polar contacts buried
Fraction buried 81.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 74.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6582.4Ų
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 8063.1Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 2079.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)