FAIRMol

ulfkktlib_2751

Pose ID 9819 Compound 2760 Pose 333

DB SELECTIONDocking 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_2751
PDB9IFF

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising and worth follow-up
Binding strong Geometry medium Native strong SASA done
Strain ΔE
18.0 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.77, Jaccard 0.53
Burial
84%
Hydrophobic fit
85%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-0.858 kcal/mol/HA) ✓ Good fit quality (FQ -8.00) ✓ Deep burial (84% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ Moderate strain (18.0 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-23.161
kcal/mol
LE
-0.858
kcal/mol/HA
Fit Quality
-8.00
FQ (Leeson)
HAC
27
heavy atoms
MW
358
Da
LogP
2.47
cLogP
Strain ΔE
18.0 kcal/mol
SASA buried
84%
Lipo contact
85% BSA apolar/total
SASA unbound
609 Ų
Apolar buried
437 Ų

Interaction summary

HB 2 HY 24 PI 1 CLASH 3

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

Final rank1.867Score-23.161
Inter norm-0.886Intra norm0.028
Top1000noExcludedno
Contacts16H-bonds2
Artifact reasongeometry warning; 9 clashes; 1 protein clash
Residues
ALA209 ALA67 ALA90 ASN208 GLY214 GLY215 GLY66 LEU73 LYS211 LYS89 MET70 PRO212 PRO213 TYR210 TYR69 VAL88

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 overlap10Native recall0.77
Jaccard0.53RMSD-
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
225 0.4070512690144195 -1.2021 -31.2552 3 18 0 0.00 - - no Open
198 0.5567259346192235 -1.23664 -32.351 3 18 0 0.00 - - no Open
333 1.8665728073721606 -0.886179 -23.161 2 16 10 0.77 - - 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 -23.161kcal/mol
Ligand efficiency (LE) -0.8578kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.003
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 358.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.47
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 17.95kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 72.68kcal/mol
Minimised FF energy 54.73kcal/mol

SASA & burial

✓ computed
SASA (unbound) 609.0Ų
Total solvent-accessible surface area of free ligand
BSA total 513.8Ų
Buried surface area upon binding
BSA apolar 437.2Ų
Hydrophobic contacts buried
BSA polar 76.6Ų
Polar contacts buried
Fraction buried 84.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2984.1Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1530.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)