FAIRMol

ulfkktlib_3158

Pose ID 9823 Compound 4311 Pose 337

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T15
T. brucei TR (Dimer cleft site) T. brucei Dimer cleft site
Ligand ulfkktlib_3158
PDB9IFF

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
7.7 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.69, Jaccard 0.43
Burial
76%
Hydrophobic fit
97%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Daphnia EC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Algae IC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Bioaccum.
vB — Very bioaccumulative (BCF>5000)
Persistent
Yes
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Risk
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Low conformational strain (7.7 kcal/mol) ✓ Excellent LE (-0.757 kcal/mol/HA) ✓ Good fit quality (FQ -7.69) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (97%) ✗ No H-bonds detected ✗ Geometry warnings ✗ Minor protein-contact clashes (4) ✗ Many internal clashes (17)
Score
-27.239
kcal/mol
LE
-0.757
kcal/mol/HA
Fit Quality
-7.69
FQ (Leeson)
HAC
36
heavy atoms
MW
464
Da
LogP
7.09
cLogP
Final rank
1.7329
rank score
Inter norm
-0.675
normalised
Contacts
17
H-bonds 0
Strain ΔE
7.7 kcal/mol
SASA buried
76%
Lipo contact
97% BSA apolar/total
SASA unbound
750 Ų
Apolar buried
548 Ų

Interaction summary

HB 0 HY 10 PI 1 CLASH 4

HBD/HBA · H-bonds (geometric)

No hbd/hba · h-bonds (geometric) detected for this pose.

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.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap9Native recall0.69
Jaccard0.43RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

489 residues
Protein targetT15Atoms7420
Residues489Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:264; MET:204

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
320 1.3423576525121554 -0.633273 -25.9357 0 17 0 0.00 - - no Open
337 1.7329354147155387 -0.675194 -27.2388 0 17 9 0.69 - - 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 -27.239kcal/mol
Ligand efficiency (LE) -0.7566kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.690
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 463.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 7.09
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 7.74kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 141.62kcal/mol
Minimised FF energy 133.88kcal/mol

SASA & burial

✓ computed
SASA (unbound) 749.8Ų
Total solvent-accessible surface area of free ligand
BSA total 566.5Ų
Buried surface area upon binding
BSA apolar 548.3Ų
Hydrophobic contacts buried
BSA polar 18.1Ų
Polar contacts buried
Fraction buried 75.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 96.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3160.4Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1570.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)