FAIRMol

Z1521554012

Pose ID 11415 Compound 1451 Pose 572

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 Z1521554012
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
34.4 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.50, Jaccard 0.30, H-bond role recall 1.00
Burial
80%
Hydrophobic fit
59%
Reason: no major geometry red flags detected
1 protein-contact clashes 39% of hydrophobic surface appears solvent-exposed (7/18 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Daphnia EC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Algae IC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Alert DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.850 kcal/mol/HA) ✓ Good fit quality (FQ -8.02) ✓ Good H-bonds (5 bonds) ✓ Deep burial (80% SASA buried) ✗ Very high strain energy (34.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-23.790
kcal/mol
LE
-0.850
kcal/mol/HA
Fit Quality
-8.02
FQ (Leeson)
HAC
28
heavy atoms
MW
398
Da
LogP
3.70
cLogP
Final rank
4.3648
rank score
Inter norm
-0.889
normalised
Contacts
14
H-bonds 6
Strain ΔE
34.4 kcal/mol
SASA buried
80%
Lipo contact
59% BSA apolar/total
SASA unbound
600 Ų
Apolar buried
285 Ų

Interaction summary

HBD 2 HBA 3 HY 5 PI 2 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 3.

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 overlap6Native recall0.50
Jaccard0.30RMSD-
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
541 1.1756627018338413 -1.07597 -27.1024 8 11 0 0.00 0.00 - no Open
549 2.1077041195670354 -0.929171 -24.9126 3 15 0 0.00 0.00 - no Open
577 2.689294324477287 -0.751854 -19.032 5 13 0 0.00 0.00 - no Open
576 3.045521506689257 -0.880563 -22.2631 5 13 0 0.00 0.00 - no Open
571 3.7610343430078648 -1.06427 -28.8526 14 18 0 0.00 0.00 - no Open
572 4.364803537312127 -0.889484 -23.7896 6 14 6 0.50 1.00 - no Current
563 4.520953703473275 -0.951393 -24.1315 3 14 0 0.00 0.00 - no Open
544 5.1376893518949105 -0.987943 -22.5162 16 17 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 -23.790kcal/mol
Ligand efficiency (LE) -0.8496kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.021
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 398.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.70
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 34.41kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -0.42kcal/mol
Minimised FF energy -34.83kcal/mol

SASA & burial

✓ computed
SASA (unbound) 600.1Ų
Total solvent-accessible surface area of free ligand
BSA total 481.8Ų
Buried surface area upon binding
BSA apolar 285.4Ų
Hydrophobic contacts buried
BSA polar 196.4Ų
Polar contacts buried
Fraction buried 80.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 59.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6354.9Ų
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 8063.1Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 2069.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)