FAIRMol

Z49719002

Pose ID 11413 Compound 1320 Pose 570

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 Z49719002
PDB5S9T

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Likely artefact or unreliable pose
Binding strong Geometry medium Native mixed SASA done
Strain ΔE
41.1 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.50, Jaccard 0.32, H-bond role recall 0.00
Burial
79%
Hydrophobic fit
68%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.202 kcal/mol/HA) ✓ Good fit quality (FQ -9.86) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (79% SASA buried) ✓ Lipophilic contacts well-matched (68%) ✗ Extreme strain energy (41.1 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-22.846
kcal/mol
LE
-1.202
kcal/mol/HA
Fit Quality
-9.86
FQ (Leeson)
HAC
19
heavy atoms
MW
281
Da
LogP
1.11
cLogP
Final rank
3.9474
rank score
Inter norm
-1.277
normalised
Contacts
13
H-bonds 9
Strain ΔE
41.1 kcal/mol
SASA buried
79%
Lipo contact
68% BSA apolar/total
SASA unbound
473 Ų
Apolar buried
255 Ų

Interaction summary

HBD 4 HBA 3 HY 5 PI 1 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. 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: strict.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap6Native recall0.50
Jaccard0.32RMSD-
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
552 1.8407083238870203 -1.98561 -32.5191 12 16 0 0.00 0.00 - no Open
561 2.6607470153974355 -1.66205 -25.8961 12 9 0 0.00 0.00 - no Open
566 2.886325150974475 -1.41231 -24.4922 7 13 0 0.00 0.00 - no Open
561 3.810169703077368 -1.1547 -19.4712 12 6 0 0.00 0.00 - no Open
570 3.9474277807939098 -1.27718 -22.8459 9 13 6 0.50 0.00 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -22.846kcal/mol
Ligand efficiency (LE) -1.2024kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.856
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 19HA

Physicochemical properties

Molecular weight 280.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.11
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 41.10kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 110.98kcal/mol
Minimised FF energy 69.88kcal/mol

SASA & burial

✓ computed
SASA (unbound) 473.1Ų
Total solvent-accessible surface area of free ligand
BSA total 374.8Ų
Buried surface area upon binding
BSA apolar 255.3Ų
Hydrophobic contacts buried
BSA polar 119.5Ų
Polar contacts buried
Fraction buried 79.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 68.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6336.1Ų
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 2063.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)