FAIRMol

Z19656583

Pose ID 3887 Compound 1253 Pose 501

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T06
T. brucei DHFR T. brucei
Ligand Z19656583
PDB8RHT

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
21.5 kcal/mol
Protein clashes
3
Internal clashes
9
Native overlap
contact recall 0.67, Jaccard 0.58, H-bond role recall 0.00
Burial
95%
Hydrophobic fit
81%
Reason: 9 internal clashes
3 protein-contact clashes 9 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Daphnia EC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Algae IC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Risk
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.756 kcal/mol/HA) ✓ Good fit quality (FQ -7.29) ✓ Deep burial (95% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ High strain energy (21.5 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Internal clashes (9)
Score
-22.671
kcal/mol
LE
-0.756
kcal/mol/HA
Fit Quality
-7.29
FQ (Leeson)
HAC
30
heavy atoms
MW
418
Da
LogP
4.30
cLogP
Final rank
0.6818
rank score
Inter norm
-0.870
normalised
Contacts
17
H-bonds 2
Strain ΔE
21.5 kcal/mol
SASA buried
95%
Lipo contact
81% BSA apolar/total
SASA unbound
694 Ų
Apolar buried
531 Ų

Interaction summary

HBA 2 HY 10 PI 5 CLASH 0

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

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.
Name8RHTContacts21
PoseOpen native poseHB0
IFP residues
ALA34 ASP54 HIS182 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE233 PHE58 PHE94 PRO91 SER89 THR184 THR86 TRP49 TYR166 TYR57 VAL32 VAL33
Current overlap14Native recall0.67
Jaccard0.58RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

223 residues
Protein targetT06Atoms3452
Residues223Chains1
Residue summaryARG:408; VAL:352; LYS:308; LEU:304; PRO:238; ILE:209; GLU:195; THR:182; SER:176; ALA:160; PHE:140; ASN:126; GLY:126; ASP:108; GLN:85; NDP:74

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:NDP301

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
501 0.6818248824134601 -0.870183 -22.6709 2 17 14 0.67 0.00 - no Current
505 1.1696575870053978 -1.09557 -32.502 6 13 0 0.00 0.00 - no Open
515 1.9447900786079562 -0.856086 -20.8782 2 15 0 0.00 0.00 - no Open
526 2.18086980307911 -0.986616 -23.3532 3 18 1 0.05 0.00 - no Open
498 4.110887622816772 -1.00704 -25.3241 14 17 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 -22.671kcal/mol
Ligand efficiency (LE) -0.7557kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.290
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 417.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.30
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 21.52kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 98.74kcal/mol
Minimised FF energy 77.22kcal/mol

SASA & burial

✓ computed
SASA (unbound) 694.1Ų
Total solvent-accessible surface area of free ligand
BSA total 658.1Ų
Buried surface area upon binding
BSA apolar 530.7Ų
Hydrophobic contacts buried
BSA polar 127.3Ų
Polar contacts buried
Fraction buried 94.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1779.8Ų
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 1808.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 589.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)