FAIRMol

ulfkktlib_1229

Pose ID 9804 Compound 1110 Pose 318

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_1229
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
30.1 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.85, Jaccard 0.58
Burial
75%
Hydrophobic fit
90%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 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 ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.575 kcal/mol/HA) ✓ Good fit quality (FQ -5.71) ✓ Deep burial (75% SASA buried) ✓ Lipophilic contacts well-matched (90%) ✗ Very high strain energy (30.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (16)
Score
-18.980
kcal/mol
LE
-0.575
kcal/mol/HA
Fit Quality
-5.71
FQ (Leeson)
HAC
33
heavy atoms
MW
481
Da
LogP
2.63
cLogP
Final rank
2.6746
rank score
Inter norm
-0.706
normalised
Contacts
17
H-bonds 2
Strain ΔE
30.1 kcal/mol
SASA buried
75%
Lipo contact
90% BSA apolar/total
SASA unbound
708 Ų
Apolar buried
476 Ų

Interaction summary

HBD 1 HBA 1 HY 9 PI 1 CLASH 3

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

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 overlap11Native recall0.85
Jaccard0.58RMSD-
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
235 1.2651194824140481 -0.837064 -26.7493 0 17 0 0.00 - - no Open
318 2.674558989134451 -0.705727 -18.9801 2 17 11 0.85 - - 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 -18.980kcal/mol
Ligand efficiency (LE) -0.5752kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.707
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 481.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.63
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 30.11kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 129.65kcal/mol
Minimised FF energy 99.54kcal/mol

SASA & burial

✓ computed
SASA (unbound) 707.8Ų
Total solvent-accessible surface area of free ligand
BSA total 531.1Ų
Buried surface area upon binding
BSA apolar 476.2Ų
Hydrophobic contacts buried
BSA polar 54.9Ų
Polar contacts buried
Fraction buried 75.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3076.2Ų
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 1573.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)