FAIRMol

KB_HAT_138

Pose ID 4166 Compound 388 Pose 103

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T07
T. brucei PTR1 T. brucei
Ligand KB_HAT_138
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
34.2 kcal/mol
Protein clashes
3
Internal clashes
4
Native overlap
contact recall 0.74, Jaccard 0.56, H-bond role recall 0.40
Burial
98%
Hydrophobic fit
76%
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 (-0.827 kcal/mol/HA) ✓ Good fit quality (FQ -7.89) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ Very high strain energy (34.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-23.983
kcal/mol
LE
-0.827
kcal/mol/HA
Fit Quality
-7.89
FQ (Leeson)
HAC
29
heavy atoms
MW
416
Da
LogP
3.52
cLogP
Strain ΔE
34.2 kcal/mol
SASA buried
98%
Lipo contact
76% BSA apolar/total
SASA unbound
603 Ų
Apolar buried
448 Ų

Interaction summary

HB 9 HY 24 PI 5 CLASH 4
Final rank2.179Score-23.983
Inter norm-1.107Intra norm0.280
Top1000noExcludedno
Contacts20H-bonds9
Artifact reasongeometry warning; 12 clashes; 1 protein clash; 4 cofactor-context clashes; high strain Δ 34.2
Residues
ARG14 ASP161 CYS168 GLN166 GLY205 LEU208 LEU209 LEU263 MET163 MET213 NAP301 PHE171 PHE97 PRO167 PRO210 TRP221 TYR174 VAL164 VAL206 HIS267

Protein summary

275 residues
Protein targetT07Atoms3932
Residues275Chains3
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 overlap14Native recall0.74
Jaccard0.56RMSD-
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
105 1.463807451337273 -0.86103 -17.64 4 18 0 0.00 0.00 - no Open
103 2.179240911546821 -1.10688 -23.9826 9 20 14 0.74 0.40 - no Current
136 2.2833906419122694 -0.977102 -15.2062 5 18 0 0.00 0.00 - no Open
106 3.0781322210493935 -0.755485 -20.4458 6 14 0 0.00 0.00 - no Open
93 3.099851131733896 -0.881887 -24.0642 3 20 0 0.00 0.00 - no Open
133 3.156262945020302 -0.667012 -12.8472 4 11 0 0.00 0.00 - no Open
58 3.454106868880225 -0.830529 -17.5797 9 15 0 0.00 0.00 - no Open
78 4.754243717183497 -1.05201 -29.1107 10 21 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 -23.983kcal/mol
Ligand efficiency (LE) -0.8270kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.894
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 416.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.52
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 34.24kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -42.21kcal/mol
Minimised FF energy -76.45kcal/mol

SASA & burial

✓ computed
SASA (unbound) 602.7Ų
Total solvent-accessible surface area of free ligand
BSA total 592.9Ų
Buried surface area upon binding
BSA apolar 447.5Ų
Hydrophobic contacts buried
BSA polar 145.4Ų
Polar contacts buried
Fraction buried 98.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 75.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1590.8Ų
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 915.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)