FAIRMol

KB_HAT_105

Pose ID 4866 Compound 2777 Pose 125

DB fairmolDocking 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_105
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
29.3 kcal/mol
Protein clashes
3
Internal clashes
4
Native overlap
contact recall 0.58, Jaccard 0.48, H-bond role recall 0.40
Burial
96%
Hydrophobic fit
89%
Reason: no major geometry red flags detected
3 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.478 kcal/mol/HA) ✓ Good fit quality (FQ -12.61) ✓ Good H-bonds (4 bonds) ✓ Deep burial (96% SASA buried) ✓ Lipophilic contacts well-matched (89%) ✗ High strain energy (29.3 kcal/mol) ✗ Geometry warnings
Score
-31.039
kcal/mol
LE
-1.478
kcal/mol/HA
Fit Quality
-12.61
FQ (Leeson)
HAC
21
heavy atoms
MW
284
Da
LogP
2.73
cLogP
Final rank
1.0677
rank score
Inter norm
-1.598
normalised
Contacts
15
H-bonds 8
Strain ΔE
29.3 kcal/mol
SASA buried
96%
Lipo contact
89% BSA apolar/total
SASA unbound
576 Ų
Apolar buried
496 Ų

Interaction summary

HBD 3 HBA 1 HY 8 PI 2 CLASH 4

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

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 overlap11Native recall0.58
Jaccard0.48RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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
98 0.7591490082274314 -1.57768 -30.6657 6 16 12 0.63 0.40 - no Open
125 1.067685783228444 -1.59778 -31.0391 8 15 11 0.58 0.40 - 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 -31.039kcal/mol
Ligand efficiency (LE) -1.4781kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -12.607
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 21HA

Physicochemical properties

Molecular weight 284.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.73
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.25kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -83.37kcal/mol
Minimised FF energy -112.63kcal/mol

SASA & burial

✓ computed
SASA (unbound) 576.0Ų
Total solvent-accessible surface area of free ligand
BSA total 555.3Ų
Buried surface area upon binding
BSA apolar 495.6Ų
Hydrophobic contacts buried
BSA polar 59.6Ų
Polar contacts buried
Fraction buried 96.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1651.6Ų
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 916.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)