FAIRMol

Z68348244

Pose ID 5232 Compound 1602 Pose 491

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 Z68348244
PDB6RX6

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
53.7 kcal/mol
Protein clashes
2
Internal clashes
5
Native overlap
contact recall 0.84, Jaccard 0.70, H-bond role recall 0.40
Burial
99%
Hydrophobic fit
78%
Reason: strain 53.7 kcal/mol
strain ΔE 53.7 kcal/mol 2 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.181 kcal/mol/HA) ✓ Good fit quality (FQ -11.02) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (99% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Extreme strain energy (53.7 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (2) ✗ Internal clashes (9)
Score
-31.894
kcal/mol
LE
-1.181
kcal/mol/HA
Fit Quality
-11.02
FQ (Leeson)
HAC
27
heavy atoms
MW
432
Da
LogP
1.75
cLogP
Strain ΔE
53.7 kcal/mol
SASA buried
99%
Lipo contact
78% BSA apolar/total
SASA unbound
617 Ų
Apolar buried
473 Ų

Interaction summary

HB 7 HY 24 PI 1 CLASH 5

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

Final rank0.138Score-31.894
Inter norm-1.230Intra norm0.048
Top1000noExcludedno
Contacts20H-bonds7
Artifact reasongeometry warning; 9 clashes; 2 protein contact clashes; 4 cofactor-context clashes; high strain Δ 53.7
Residues
ARG14 ASN175 ASP161 CYS168 GLY205 LEU208 LEU209 MET163 MET213 NAP301 PHE171 PHE97 PRO167 PRO210 SER207 SER95 TRP221 TYR174 VAL164 VAL206

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 overlap16Native recall0.84
Jaccard0.70RMSD-
HB strict1Strict recall0.17
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
489 0.05108413669265377 -0.891259 -21.4879 0 12 0 0.00 0.00 - no Open
491 0.13820060664767683 -1.22956 -31.8936 7 20 16 0.84 0.40 - no Current
482 3.6024335964103926 -0.992764 -24.4835 9 15 0 0.00 0.00 - no Open
493 4.803104340131133 -1.27709 -36.3056 6 23 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 -31.894kcal/mol
Ligand efficiency (LE) -1.1812kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.021
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 432.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.75
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 53.67kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 50.41kcal/mol
Minimised FF energy -3.26kcal/mol

SASA & burial

✓ computed
SASA (unbound) 617.0Ų
Total solvent-accessible surface area of free ligand
BSA total 610.0Ų
Buried surface area upon binding
BSA apolar 472.6Ų
Hydrophobic contacts buried
BSA polar 137.4Ų
Polar contacts buried
Fraction buried 98.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 77.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1611.9Ų
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 917.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)