FAIRMol

ulfkktlib_1159

Pose ID 4942 Compound 2521 Pose 201

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T08
T. brucei PTR1 T. brucei
Ligand ulfkktlib_1159
PDB6RX6

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 high Native strong SASA done
Strain ΔE
16.3 kcal/mol
Protein clashes
1
Internal clashes
2
Native overlap
contact recall 0.79, Jaccard 0.75, H-bond role recall 0.20
Burial
99%
Hydrophobic fit
94%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.493 kcal/mol/HA) ✓ Good fit quality (FQ -12.73) ✓ Good H-bonds (5 bonds) ✓ Deep burial (99% SASA buried) ✓ Lipophilic contacts well-matched (94%) ✗ Moderate strain (16.3 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (8)
Score
-31.351
kcal/mol
LE
-1.493
kcal/mol/HA
Fit Quality
-12.73
FQ (Leeson)
HAC
21
heavy atoms
MW
279
Da
LogP
1.98
cLogP
Strain ΔE
16.3 kcal/mol
SASA buried
99%
Lipo contact
94% BSA apolar/total
SASA unbound
525 Ų
Apolar buried
490 Ų

Interaction summary

HB 5 HY 24 PI 4 CLASH 2

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 rank0.718Score-31.351
Inter norm-1.543Intra norm0.050
Top1000noExcludedno
Contacts16H-bonds5
Artifact reasongeometry warning; 8 clashes; 1 protein clash; 1 severe cofactor-context clash
Residues
ARG14 ASP161 CYS168 GLY205 LEU208 LEU209 MET163 MET213 NAP301 PHE97 PRO210 SER207 SER95 TRP221 TYR174 VAL206

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
NameTbPTR1_cW_6RX6_ReadyContacts19
PoseOpen native poseHB0
IFP residues
ARG14 ASP161 CYS168 GLY205 LEU208 LEU209 LYS178 MET213 NAP301 PHE171 PHE97 PRO210 PRO99 SER207 SER95 TRP221 TYR174 TYR98 VAL206
Current overlap15Native recall0.79
Jaccard0.75RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.20

Protein summary

258 residues
Protein targetT08Atoms3881
Residues258Chains2
Residue summaryLEU:437; VAL:433; ALA:361; ARG:288; ILE:266; GLU:210; LYS:198; SER:198; ASN:182; THR:154; GLN:153; PHE:140; PRO:140; TYR:126; GLY:112; HIS:103

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:NAP301

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
201 0.7182823670119411 -1.543 -31.3513 5 16 15 0.79 0.20 - no Current
183 1.345034658145995 -1.14631 -19.4265 6 18 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 -31.351kcal/mol
Ligand efficiency (LE) -1.4929kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -12.734
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 21HA

Physicochemical properties

Molecular weight 279.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.98
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 16.26kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 35.92kcal/mol
Minimised FF energy 19.67kcal/mol

SASA & burial

✓ computed
SASA (unbound) 525.2Ų
Total solvent-accessible surface area of free ligand
BSA total 519.9Ų
Buried surface area upon binding
BSA apolar 489.8Ų
Hydrophobic contacts buried
BSA polar 30.1Ų
Polar contacts buried
Fraction buried 99.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 94.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1627.4Ų
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 2051.9Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 919.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)