FAIRMol

Z52584496

Pose ID 11469 Compound 744 Pose 626

DB fairmolDocking 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 Z52584496
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
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
32.5 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.67, Jaccard 0.38, H-bond role recall 0.00
Burial
80%
Hydrophobic fit
90%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.811 kcal/mol/HA) ✓ Good fit quality (FQ -7.57) ✓ Good H-bonds (4 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (90%) ✗ Very high strain energy (32.5 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (4) ✗ Many internal clashes (14)
Score
-21.892
kcal/mol
LE
-0.811
kcal/mol/HA
Fit Quality
-7.57
FQ (Leeson)
HAC
27
heavy atoms
MW
375
Da
LogP
3.58
cLogP
Final rank
1.4671
rank score
Inter norm
-0.881
normalised
Contacts
17
H-bonds 5
Strain ΔE
32.5 kcal/mol
SASA buried
80%
Lipo contact
90% BSA apolar/total
SASA unbound
632 Ų
Apolar buried
453 Ų

Interaction summary

HBD 1 HBA 3 HY 6 PI 2 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 4.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: permissive.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap8Native recall0.67
Jaccard0.38RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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
611 1.1356034518520322 -0.947549 -24.3181 2 18 0 0.00 0.00 - no Open
626 1.4671179538161405 -0.88101 -21.8923 5 17 8 0.67 0.00 - no Current
620 2.84250903178193 -1.16388 -30.0041 11 21 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 -21.892kcal/mol
Ligand efficiency (LE) -0.8108kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.565
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 375.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.58
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 32.47kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 73.40kcal/mol
Minimised FF energy 40.94kcal/mol

SASA & burial

✓ computed
SASA (unbound) 632.2Ų
Total solvent-accessible surface area of free ligand
BSA total 505.5Ų
Buried surface area upon binding
BSA apolar 452.9Ų
Hydrophobic contacts buried
BSA polar 52.6Ų
Polar contacts buried
Fraction buried 80.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6534.2Ų
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 2066.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)