FAIRMol

KB_HAT_96

Pose ID 4862 Compound 422 Pose 121

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_96
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
22.6 kcal/mol
Protein clashes
5
Internal clashes
5
Native overlap
contact recall 0.68, Jaccard 0.57, H-bond role recall 0.40
Burial
92%
Hydrophobic fit
81%
Reason: no major geometry red flags detected
5 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.089 kcal/mol/HA) ✓ Good fit quality (FQ -10.60) ✓ Good H-bonds (5 bonds) ✓ Deep burial (92% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ High strain energy (22.6 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (6) ✗ Internal clashes (7)
Score
-33.743
kcal/mol
LE
-1.089
kcal/mol/HA
Fit Quality
-10.60
FQ (Leeson)
HAC
31
heavy atoms
MW
414
Da
LogP
2.35
cLogP
Strain ΔE
22.6 kcal/mol
SASA buried
92%
Lipo contact
81% BSA apolar/total
SASA unbound
706 Ų
Apolar buried
524 Ų

Interaction summary

HB 5 HY 24 PI 4 CLASH 5
Final rank0.853Score-33.743
Inter norm-1.044Intra norm-0.045
Top1000noExcludedno
Contacts17H-bonds5
Artifact reasongeometry warning; 7 clashes; 6 protein contact clashes; 1 cofactor-context clash; moderate strain Δ 22.6
Residues
ARG14 ASN175 ASP161 CYS168 GLY205 LEU209 MET163 MET213 NAP301 PHE171 PHE97 PRO167 PRO210 TRP221 TYR174 VAL206 VAL211

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 overlap13Native recall0.68
Jaccard0.57RMSD-
HB strict1Strict recall0.17
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
117 0.4816532383386699 -0.819823 -31.7131 5 19 0 0.00 0.00 - no Open
121 0.8528228617151145 -1.04358 -33.743 5 17 13 0.68 0.40 - no Current
116 0.994354898836697 -0.86191 -27.8752 4 16 0 0.00 0.00 - no Open
88 1.6774821073098232 -1.10093 -32.8614 10 20 0 0.00 0.00 - no Open
127 2.448460325432168 -0.829026 -22.9346 4 20 0 0.00 0.00 - no Open
81 2.757958246941406 -0.758658 -26.9153 4 13 0 0.00 0.00 - no Open
86 3.5513891838815015 -0.79038 -20.7592 11 15 0 0.00 0.00 - no Open
125 3.6953505570332297 -0.629977 -25.6744 10 11 0 0.00 0.00 - no Open
49 4.429218295957923 -1.0087 -27.8555 16 18 0 0.00 0.00 - no Open
73 6.223113891236293 -1.0244 -28.8817 9 22 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 -33.743kcal/mol
Ligand efficiency (LE) -1.0885kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.604
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 414.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.35
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 22.56kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -13.62kcal/mol
Minimised FF energy -36.18kcal/mol

SASA & burial

✓ computed
SASA (unbound) 706.0Ų
Total solvent-accessible surface area of free ligand
BSA total 649.0Ų
Buried surface area upon binding
BSA apolar 524.4Ų
Hydrophobic contacts buried
BSA polar 124.7Ų
Polar contacts buried
Fraction buried 91.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1711.9Ų
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 914.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)