FAIRMol

Z49894131

Pose ID 4548 Compound 2174 Pose 485

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 Z49894131
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
22.2 kcal/mol
Protein clashes
0
Internal clashes
8
Native overlap
contact recall 0.63, Jaccard 0.55, H-bond role recall 0.00
Burial
98%
Hydrophobic fit
80%
Reason: 8 internal clashes
8 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.549 kcal/mol/HA) ✓ Good fit quality (FQ -13.45) ✓ Deep burial (98% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ High strain energy (22.2 kcal/mol) ✗ No H-bonds detected ✗ Geometry warnings ✗ Internal clashes (8)
Score
-34.075
kcal/mol
LE
-1.549
kcal/mol/HA
Fit Quality
-13.45
FQ (Leeson)
HAC
22
heavy atoms
MW
309
Da
LogP
3.41
cLogP
Final rank
-0.5480
rank score
Inter norm
-1.496
normalised
Contacts
15
H-bonds 2
Strain ΔE
22.2 kcal/mol
SASA buried
98%
Lipo contact
80% BSA apolar/total
SASA unbound
551 Ų
Apolar buried
433 Ų

Interaction summary

HB 0 HY 8 PI 5 CLASH 0

HBD/HBA · H-bonds (geometric)

No hbd/hba · h-bonds (geometric) detected for this pose.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.

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 overlap12Native recall0.63
Jaccard0.55RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue1HB residue recall0.20

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
485 -0.5479706125784236 -1.49583 -34.0754 2 15 12 0.63 0.00 - no Current
494 2.4752709990325346 -1.27067 -29.0401 5 12 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 -34.075kcal/mol
Ligand efficiency (LE) -1.5489kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -13.447
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 22HA

Physicochemical properties

Molecular weight 309.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.41
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 22.15kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 73.47kcal/mol
Minimised FF energy 51.32kcal/mol

SASA & burial

✓ computed
SASA (unbound) 551.3Ų
Total solvent-accessible surface area of free ligand
BSA total 542.3Ų
Buried surface area upon binding
BSA apolar 433.2Ų
Hydrophobic contacts buried
BSA polar 109.1Ų
Polar contacts buried
Fraction buried 98.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1567.5Ų
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 924.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)