FAIRMol

Z18811575

Pose ID 4007 Compound 2588 Pose 621

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 Z18811575
PDB8RHT

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
44.8 kcal/mol
Protein clashes
0
Internal clashes
10
Native overlap
contact recall 0.71, Jaccard 0.62, H-bond role recall 0.00
Burial
94%
Hydrophobic fit
75%
Reason: 10 internal clashes, strain 44.8 kcal/mol
strain ΔE 44.8 kcal/mol 10 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>100 mg/L)
Algae IC₅₀
Not classified (>100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.630 kcal/mol/HA) ✓ Good fit quality (FQ -5.95) ✓ Deep burial (94% SASA buried) ✓ Lipophilic contacts well-matched (75%) ✗ Extreme strain energy (44.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-17.632
kcal/mol
LE
-0.630
kcal/mol/HA
Fit Quality
-5.95
FQ (Leeson)
HAC
28
heavy atoms
MW
408
Da
LogP
1.21
cLogP
Final rank
1.8691
rank score
Inter norm
-0.855
normalised
Contacts
18
H-bonds 2
Strain ΔE
44.8 kcal/mol
SASA buried
94%
Lipo contact
75% BSA apolar/total
SASA unbound
705 Ų
Apolar buried
497 Ų

Interaction summary

HBA 2 HY 9 PI 3 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 overlap15Native recall0.71
Jaccard0.62RMSD-
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
621 1.8691352553791356 -0.855188 -17.6319 2 18 15 0.71 0.00 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -17.632kcal/mol
Ligand efficiency (LE) -0.6297kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.945
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 407.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.21
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 44.76kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -88.57kcal/mol
Minimised FF energy -133.34kcal/mol

SASA & burial

✓ computed
SASA (unbound) 704.6Ų
Total solvent-accessible surface area of free ligand
BSA total 666.1Ų
Buried surface area upon binding
BSA apolar 496.9Ų
Hydrophobic contacts buried
BSA polar 169.2Ų
Polar contacts buried
Fraction buried 94.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 74.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1766.0Ų
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 577.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)