FAIRMol

Z19459210

Pose ID 4416 Compound 944 Pose 353

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 Z19459210
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 high Native strong SASA done
Strain ΔE
29.9 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.74, Jaccard 0.64, H-bond role recall 0.40
Burial
82%
Hydrophobic fit
63%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.869 kcal/mol/HA) ✓ Good fit quality (FQ -8.55) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (82% SASA buried) ✓ Lipophilic contacts well-matched (63%) ✗ High strain energy (29.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-27.822
kcal/mol
LE
-0.869
kcal/mol/HA
Fit Quality
-8.55
FQ (Leeson)
HAC
32
heavy atoms
MW
458
Da
LogP
3.57
cLogP
Strain ΔE
29.9 kcal/mol
SASA buried
82%
Lipo contact
63% BSA apolar/total
SASA unbound
723 Ų
Apolar buried
374 Ų

Interaction summary

HB 8 HY 24 PI 5 CLASH 1
Final rank0.268Score-27.822
Inter norm-1.075Intra norm0.206
Top1000noExcludedno
Contacts17H-bonds8
Artifact reasongeometry warning; 10 clashes; 1 protein contact clash; 2 severe cofactor-context clashes; moderate strain Δ 29.9
Residues
ALA170 ARG14 ASP161 CYS168 LEU209 MET169 MET213 NAP301 PHE171 PHE97 PRO210 PRO99 SER95 TRP221 TYR174 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
Jaccard0.64RMSD-
HB strict3Strict recall0.50
HB same residue+role2HB role recall0.40
HB same residue3HB residue recall0.60

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
353 0.2677846330097941 -1.07537 -27.8222 8 17 14 0.74 0.40 - no Current
385 1.072504017808142 -0.997956 -27.1257 7 18 13 0.68 0.20 - no Open
335 1.9579738510770275 -1.01092 -28.7026 6 22 0 0.00 0.00 - no Open
382 2.0108526982107993 -0.822339 -20.3127 6 13 0 0.00 0.00 - no Open
380 2.3895493898087743 -0.733724 -19.5103 13 14 0 0.00 0.00 - no Open
451 2.500575774493837 -0.801352 -19.5984 4 18 0 0.00 0.00 - no Open
365 2.585210403258686 -0.744596 -11.1465 9 20 0 0.00 0.00 - no Open
397 3.1112027661132537 -0.667648 -14.8384 8 10 0 0.00 0.00 - no Open
398 3.193158610637237 -0.881209 -19.5521 15 18 0 0.00 0.00 - no Open
436 3.954326897652338 -0.726205 -12.1702 7 19 0 0.00 0.00 - no Open
337 4.153204340630617 -0.904158 -19.2488 9 13 0 0.00 0.00 - no Open
346 5.166667667365341 -0.742034 -19.6346 11 13 0 0.00 0.00 - no Open
361 5.606440624303128 -1.02946 -25.164 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 -27.822kcal/mol
Ligand efficiency (LE) -0.8694kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.550
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 458.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.57
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.94kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 105.31kcal/mol
Minimised FF energy 75.37kcal/mol

SASA & burial

✓ computed
SASA (unbound) 723.2Ų
Total solvent-accessible surface area of free ligand
BSA total 593.8Ų
Buried surface area upon binding
BSA apolar 374.3Ų
Hydrophobic contacts buried
BSA polar 219.4Ų
Polar contacts buried
Fraction buried 82.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 63.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1605.7Ų
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 917.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)