FAIRMol

Z19222311

Pose ID 13980 Compound 769 Pose 422

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T21
T. cruzi R5P T. cruzi
Ligand Z19222311
PDB3K7O

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
10.3 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.79, Jaccard 0.69, H-bond role recall 0.22
Burial
65%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
1 protein-contact clashes 56% of hydrophobic surface appears solvent-exposed (14/25 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
EcoTox / ADMET GDS: UNSAFE UL GreenDrugScore ML model
ECOscore
0.282
aquatic tox · BCF · biodeg.
GDS₃ (3-block)
0.371
ADMET + ECO + DL
ADMETscore (GDS)
0.388
absorption · distr. · metab.
DLscore
0.395
drug-likeness
P(SAFE)
0.05
GDS classification
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Risk
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.860 kcal/mol/HA) ✓ Good fit quality (FQ -8.38) ✓ Strong H-bond network (6 bonds) ✓ Good burial (65% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ Moderate strain (10.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-26.666
kcal/mol
LE
-0.860
kcal/mol/HA
Fit Quality
-8.38
FQ (Leeson)
HAC
31
heavy atoms
MW
423
Da
LogP
5.66
cLogP
Final rank
3.7249
rank score
Inter norm
-0.825
normalised
Contacts
13
H-bonds 8
Strain ΔE
10.3 kcal/mol
SASA buried
65%
Lipo contact
82% BSA apolar/total
SASA unbound
684 Ų
Apolar buried
365 Ų

Interaction summary

HBA 6 HY 2 PI 4 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 3.

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.
Name3K7OContacts14
PoseOpen native poseHB0
IFP residues
ARG137 ARG141 ASN103 HIS102 HIS138 ASP10 CYS69 GLY70 GLY74 HIS11 ILE73 PRO12 SER71 TYR46
Current overlap11Native recall0.79
Jaccard0.69RMSD-
HB strict4Strict recall0.33
HB same residue+role2HB role recall0.22
HB same residue2HB residue recall0.25

Protein summary

305 residues
Protein targetT21Atoms4646
Residues305Chains2
Residue summaryARG:576; ILE:532; VAL:512; GLU:420; ALA:360; PHE:240; HIS:238; LYS:220; THR:210; LEU:190; PRO:168; TYR:168; GLY:154; SER:154; ASP:144; ASN:112

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
439 1.1628233344151113 -0.906918 -27.9879 3 16 0 0.00 0.00 - no Open
468 1.2633865118385668 -0.898731 -27.8853 2 17 0 0.00 0.00 - no Open
366 2.346994116576859 -1.13989 -35.9598 5 19 0 0.00 0.00 - no Open
432 2.981404368719356 -0.687014 -21.8499 4 16 0 0.00 0.00 - no Open
385 3.6381866787315404 -0.739509 -19.1107 3 18 0 0.00 0.00 - no Open
422 3.724908937099832 -0.82493 -26.6656 8 13 11 0.79 0.22 - no Current
386 3.85148268722908 -0.870285 -26.6452 10 13 0 0.00 0.00 - no Open
393 4.116103612653292 -0.926482 -28.3794 10 16 0 0.00 0.00 - no Open
376 4.356730612096464 -0.774795 -20.8823 13 14 0 0.00 0.00 - no Open
416 4.907697742604002 -0.626708 -19.1249 3 10 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 -26.666kcal/mol
Ligand efficiency (LE) -0.8602kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.380
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 422.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.66
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 10.27kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 107.14kcal/mol
Minimised FF energy 96.87kcal/mol

SASA & burial

✓ computed
SASA (unbound) 684.1Ų
Total solvent-accessible surface area of free ligand
BSA total 445.0Ų
Buried surface area upon binding
BSA apolar 364.6Ų
Hydrophobic contacts buried
BSA polar 80.5Ų
Polar contacts buried
Fraction buried 65.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2282.9Ų
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 2482.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 782.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)