FAIRMol

ulfkktlib_3761

Pose ID 11082 Compound 4685 Pose 239

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 ulfkktlib_3761
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
60.5 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.67, Jaccard 0.36, H-bond role recall 0.00
Burial
82%
Hydrophobic fit
57%
Reason: 6 internal clashes, strain 60.5 kcal/mol
strain ΔE 60.5 kcal/mol 6 protein-contact clashes 6 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.820 kcal/mol/HA) ✓ Good fit quality (FQ -7.74) ✓ Good H-bonds (4 bonds) ✓ Deep burial (82% SASA buried) ✗ Extreme strain energy (60.5 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-22.957
kcal/mol
LE
-0.820
kcal/mol/HA
Fit Quality
-7.74
FQ (Leeson)
HAC
28
heavy atoms
MW
397
Da
LogP
2.22
cLogP
Final rank
3.0343
rank score
Inter norm
-0.846
normalised
Contacts
18
H-bonds 12
Strain ΔE
60.5 kcal/mol
SASA buried
82%
Lipo contact
57% BSA apolar/total
SASA unbound
657 Ų
Apolar buried
310 Ų

Interaction summary

HBD 1 HBA 3 HY 10 PI 2 CLASH 6

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 overlap8Native recall0.67
Jaccard0.36RMSD-
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
239 3.034267582172114 -0.846353 -22.9568 12 18 8 0.67 0.00 - no Current
321 4.539197277419995 -0.809117 -21.9251 6 16 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 -22.957kcal/mol
Ligand efficiency (LE) -0.8199kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.740
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 397.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.22
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 60.48kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 176.25kcal/mol
Minimised FF energy 115.78kcal/mol

SASA & burial

✓ computed
SASA (unbound) 657.2Ų
Total solvent-accessible surface area of free ligand
BSA total 540.2Ų
Buried surface area upon binding
BSA apolar 310.4Ų
Hydrophobic contacts buried
BSA polar 229.8Ų
Polar contacts buried
Fraction buried 82.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 57.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6427.5Ų
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 2058.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)