FAIRMol

ulfkktlib_975

Pose ID 10468 Compound 23 Pose 303

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T16
T. brucei TR (Dimer interface (site 2)) T. brucei Dimer interface (site 2)
Ligand ulfkktlib_975
PDB6RB5

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native mixed SASA done
Strain ΔE
6.1 kcal/mol
Protein clashes
0
Internal clashes
10
Native overlap
contact recall 0.50, Jaccard 0.33
Burial
76%
Hydrophobic fit
78%
Reason: 10 internal clashes
10 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Low conformational strain (6.1 kcal/mol) ✓ Excellent LE (-0.987 kcal/mol/HA) ✓ Good fit quality (FQ -8.71) ✓ Good H-bonds (4 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-22.708
kcal/mol
LE
-0.987
kcal/mol/HA
Fit Quality
-8.71
FQ (Leeson)
HAC
23
heavy atoms
MW
313
Da
LogP
4.92
cLogP
Strain ΔE
6.1 kcal/mol
SASA buried
76%
Lipo contact
78% BSA apolar/total
SASA unbound
552 Ų
Apolar buried
326 Ų

Interaction summary

HB 4 HY 23 PI 0 CLASH 0
Final rank1.711Score-22.708
Inter norm-1.014Intra norm0.027
Top1000noExcludedno
Contacts12H-bonds4
Artifact reasongeometry warning; 10 clashes; 1 protein clash
Residues
ALA209 ALA90 GLY214 GLY215 LYS211 LYS89 MET70 PRO187 PRO212 PRO213 TYR210 VAL88

Protein summary

493 residues
Protein targetT16Atoms7551
Residues493Chains1
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:276; MET:221

Receptor context

1 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 1 Excluded HETATM 0
Kept cofactors / ions
A:FAD501

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6RB5Contacts12
PoseOpen native poseHB0
IFP residues
ALA90 ARG74 GLY85 LEU73 LYS89 MET70 PHE83 PRO212 PRO213 SER86 SER87 VAL88
Current overlap6Native recall0.50
Jaccard0.33RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

HB · H-bonds

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

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
196 -0.09129784545088215 -1.41659 -33.5409 1 15 0 0.00 - - no Open
276 0.4221779857226626 -1.17972 -26.4315 2 16 0 0.00 - - no Open
234 1.3950006973288718 -1.23773 -27.9298 2 16 1 0.08 - - no Open
177 1.5110784718979842 -1.28616 -29.4076 2 17 0 0.00 - - no Open
303 1.7107350648349646 -1.01387 -22.7081 4 12 6 0.50 - - 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 -22.708kcal/mol
Ligand efficiency (LE) -0.9873kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.714
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 313.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.92
Lipinski: ≤ 5
Rotatable bonds 2

Conformational strain (MMFF94s)

Strain energy (ΔE) 6.14kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 60.71kcal/mol
Minimised FF energy 54.56kcal/mol

SASA & burial

✓ computed
SASA (unbound) 551.5Ų
Total solvent-accessible surface area of free ligand
BSA total 417.4Ų
Buried surface area upon binding
BSA apolar 326.4Ų
Hydrophobic contacts buried
BSA polar 91.0Ų
Polar contacts buried
Fraction buried 75.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3043.2Ų
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 4076.6Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1480.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)