FAIRMol

Z56832158

Pose ID 5196 Compound 2721 Pose 455

DB fairmolDocking 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 Z56832158
PDB6RX6

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising and worth follow-up
Binding strong Geometry high Native mixed SASA done
Strain ΔE
16.5 kcal/mol
Protein clashes
0
Internal clashes
1
Native overlap
contact recall 0.37, Jaccard 0.33, H-bond role recall 0.40
Burial
85%
Hydrophobic fit
93%
Reason: no major geometry red flags detected
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Daphnia EC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Algae IC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.338 kcal/mol/HA) ✓ Good fit quality (FQ -11.81) ✓ Good H-bonds (3 bonds) ✓ Deep burial (85% SASA buried) ✓ Lipophilic contacts well-matched (93%) ✗ Moderate strain (16.5 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-30.771
kcal/mol
LE
-1.338
kcal/mol/HA
Fit Quality
-11.81
FQ (Leeson)
HAC
23
heavy atoms
MW
305
Da
LogP
4.52
cLogP
Final rank
1.0629
rank score
Inter norm
-1.505
normalised
Contacts
9
H-bonds 8
Strain ΔE
16.5 kcal/mol
SASA buried
85%
Lipo contact
93% BSA apolar/total
SASA unbound
594 Ų
Apolar buried
467 Ų

Interaction summary

HBD 2 HBA 1 HY 4 PI 2 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

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 overlap7Native recall0.37
Jaccard0.33RMSD-
HB strict3Strict recall0.50
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
428 0.1950391297033565 -1.38991 -30.8293 3 17 13 0.68 0.00 - no Open
455 1.062913512785606 -1.50491 -30.7706 8 9 7 0.37 0.40 - no Current
438 3.3679033600549193 -1.03318 -22.8315 7 15 0 0.00 0.00 - no Open
440 3.5654522027493063 -1.21323 -21.6344 8 14 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 -30.771kcal/mol
Ligand efficiency (LE) -1.3379kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.808
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 305.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.52
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 16.54kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 18.54kcal/mol
Minimised FF energy 2.00kcal/mol

SASA & burial

✓ computed
SASA (unbound) 593.6Ų
Total solvent-accessible surface area of free ligand
BSA total 503.4Ų
Buried surface area upon binding
BSA apolar 466.9Ų
Hydrophobic contacts buried
BSA polar 36.5Ų
Polar contacts buried
Fraction buried 84.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 92.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1648.6Ų
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 952.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)