FAIRMol

ulfkktlib_1053

Pose ID 11059 Compound 3905 Pose 216

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_1053
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 mixed SASA done
Strain ΔE
33.0 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.42, Jaccard 0.25, H-bond role recall 0.00
Burial
79%
Hydrophobic fit
69%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes 40% of hydrophobic surface appears solvent-exposed (4/10 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.175 kcal/mol/HA) ✓ Good fit quality (FQ -9.63) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (79% SASA buried) ✓ Lipophilic contacts well-matched (69%) ✗ Very high strain energy (33.0 kcal/mol) ✗ Geometry warnings
Score
-22.334
kcal/mol
LE
-1.175
kcal/mol/HA
Fit Quality
-9.63
FQ (Leeson)
HAC
19
heavy atoms
MW
287
Da
LogP
-1.07
cLogP
Final rank
2.7229
rank score
Inter norm
-1.193
normalised
Contacts
13
H-bonds 8
Strain ΔE
33.0 kcal/mol
SASA buried
79%
Lipo contact
69% BSA apolar/total
SASA unbound
464 Ų
Apolar buried
254 Ų

Interaction summary

HBD 2 HBA 4 HY 7 PI 1 CLASH 3

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 overlap5Native recall0.42
Jaccard0.25RMSD-
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
176 2.1235620534942115 -1.649 -32.7179 12 13 0 0.00 0.00 - no Open
173 2.2097958068481676 -1.68052 -33.3208 16 19 0 0.00 0.00 - no Open
140 2.6837438727649325 -1.50508 -31.2958 16 17 0 0.00 0.00 - no Open
216 2.7228918607595345 -1.1931 -22.3343 8 13 5 0.42 0.00 - no Current
129 3.546185683732613 -1.45232 -30.7445 13 18 0 0.00 0.00 - no Open
122 4.021631400475942 -1.49408 -32.5526 12 15 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 -22.334kcal/mol
Ligand efficiency (LE) -1.1755kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.635
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 19HA

Physicochemical properties

Molecular weight 286.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) -1.07
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 33.05kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 111.30kcal/mol
Minimised FF energy 78.25kcal/mol

SASA & burial

✓ computed
SASA (unbound) 464.3Ų
Total solvent-accessible surface area of free ligand
BSA total 368.6Ų
Buried surface area upon binding
BSA apolar 254.3Ų
Hydrophobic contacts buried
BSA polar 114.3Ų
Polar contacts buried
Fraction buried 79.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 69.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6320.9Ų
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 2062.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)