FAIRMol

KB_HAT_181

Pose ID 4878 Compound 321 Pose 137

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 KB_HAT_181
PDB6RX6

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
35.2 kcal/mol
Protein clashes
3
Internal clashes
5
Native overlap
contact recall 0.79, Jaccard 0.62, H-bond role recall 0.40
Burial
98%
Hydrophobic fit
70%
Reason: no major geometry red flags detected
3 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.190 kcal/mol/HA) ✓ Good fit quality (FQ -10.96) ✓ Good H-bonds (5 bonds) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (70%) ✗ Very high strain energy (35.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-30.942
kcal/mol
LE
-1.190
kcal/mol/HA
Fit Quality
-10.96
FQ (Leeson)
HAC
26
heavy atoms
MW
367
Da
LogP
1.58
cLogP
Strain ΔE
35.2 kcal/mol
SASA buried
98%
Lipo contact
70% BSA apolar/total
SASA unbound
590 Ų
Apolar buried
404 Ų

Interaction summary

HB 5 HY 24 PI 4 CLASH 5
Final rank1.902Score-30.942
Inter norm-1.343Intra norm0.153
Top1000noExcludedno
Contacts20H-bonds5
Artifact reasongeometry warning; 9 clashes; 1 protein clash; 3 cofactor-context clashes; high strain Δ 35.2
Residues
ARG14 ASN175 ASP161 CYS168 GLN166 GLY205 LEU208 LEU209 LYS178 MET163 NAP301 PHE171 PHE97 PRO167 PRO210 SER207 SER95 TYR174 VAL164 VAL206

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

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
Jaccard0.62RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
137 1.9022794263099 -1.34289 -30.942 5 20 15 0.79 0.40 - no Current
142 1.9730616019824003 -1.0168 -23.1832 5 18 0 0.00 0.00 - no Open
59 2.0234056799141285 -1.08422 -20.7112 3 12 0 0.00 0.00 - no Open
101 2.6385765289625702 -1.01508 -25.6628 7 16 0 0.00 0.00 - no Open
89 2.6510408886962784 -1.16496 -29.9812 11 12 0 0.00 0.00 - no Open
113 3.5425556775037705 -0.799775 -14.3909 4 12 0 0.00 0.00 - no Open
109 3.6384092401026855 -0.980049 -18.0641 5 16 0 0.00 0.00 - no Open
84 3.694269250931205 -1.32151 -32.4281 13 23 0 0.00 0.00 - no Open
60 4.823393547826033 -1.03292 -21.9275 13 16 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 -30.942kcal/mol
Ligand efficiency (LE) -1.1901kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.965
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 367.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.58
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 35.25kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -143.14kcal/mol
Minimised FF energy -178.39kcal/mol

SASA & burial

✓ computed
SASA (unbound) 590.0Ų
Total solvent-accessible surface area of free ligand
BSA total 579.0Ų
Buried surface area upon binding
BSA apolar 404.2Ų
Hydrophobic contacts buried
BSA polar 174.8Ų
Polar contacts buried
Fraction buried 98.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 69.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1533.6Ų
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 929.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)