FAIRMol

Z56871323

Pose ID 5272 Compound 3047 Pose 531

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 Z56871323
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
39.0 kcal/mol
Protein clashes
3
Internal clashes
6
Native overlap
contact recall 0.68, Jaccard 0.52, H-bond role recall 0.40
Burial
97%
Hydrophobic fit
97%
Reason: 6 internal clashes
3 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.402 kcal/mol/HA) ✓ Good fit quality (FQ -13.08) ✓ Deep burial (97% SASA buried) ✓ Lipophilic contacts well-matched (97%) ✗ Very high strain energy (39.0 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Many internal clashes (13)
Score
-37.858
kcal/mol
LE
-1.402
kcal/mol/HA
Fit Quality
-13.08
FQ (Leeson)
HAC
27
heavy atoms
MW
358
Da
LogP
2.11
cLogP
Final rank
1.0910
rank score
Inter norm
-1.285
normalised
Contacts
19
H-bonds 3
Strain ΔE
39.0 kcal/mol
SASA buried
97%
Lipo contact
97% BSA apolar/total
SASA unbound
637 Ų
Apolar buried
599 Ų

Interaction summary

HBD 2 HY 10 PI 4 CLASH 6

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 1.

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 overlap13Native recall0.68
Jaccard0.52RMSD-
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
531 1.0910335788335552 -1.28516 -37.8578 3 19 13 0.68 0.40 - no Current
565 3.307090474104431 -0.80903 -18.8945 2 11 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 -37.858kcal/mol
Ligand efficiency (LE) -1.4021kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -13.081
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 358.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.11
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 39.01kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 169.35kcal/mol
Minimised FF energy 130.34kcal/mol

SASA & burial

✓ computed
SASA (unbound) 637.5Ų
Total solvent-accessible surface area of free ligand
BSA total 616.6Ų
Buried surface area upon binding
BSA apolar 598.6Ų
Hydrophobic contacts buried
BSA polar 18.1Ų
Polar contacts buried
Fraction buried 96.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 97.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1740.4Ų
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 929.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)