FAIRMol

Z56940509

Pose ID 3905 Compound 213 Pose 519

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 Z56940509
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
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
21.5 kcal/mol
Protein clashes
3
Internal clashes
4
Native overlap
contact recall 0.81, Jaccard 0.74, H-bond role recall 0.25
Burial
96%
Hydrophobic fit
80%
Reason: no major geometry red flags detected
3 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.804 kcal/mol/HA) ✓ Good fit quality (FQ -7.67) ✓ Good H-bonds (4 bonds) ✓ Deep burial (96% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ High strain energy (21.5 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Many internal clashes (17)
Score
-23.308
kcal/mol
LE
-0.804
kcal/mol/HA
Fit Quality
-7.67
FQ (Leeson)
HAC
29
heavy atoms
MW
400
Da
LogP
4.87
cLogP
Strain ΔE
21.5 kcal/mol
SASA buried
96%
Lipo contact
80% BSA apolar/total
SASA unbound
616 Ų
Apolar buried
474 Ų

Interaction summary

HB 4 HY 24 PI 3 CLASH 4

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

Final rank1.434Score-23.308
Inter norm-0.921Intra norm0.117
Top1000noExcludedno
Contacts19H-bonds4
Artifact reasongeometry warning; 17 clashes; 3 protein contact clashes; 1 cofactor-context clash; moderate strain Δ 21.5
Residues
ALA34 ARG100 ARG59 ASP54 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE58 PHE94 PRO91 SER89 THR184 THR86 TYR166 VAL32 VAL33

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 overlap17Native recall0.81
Jaccard0.74RMSD-
HB strict1Strict recall0.20
HB same residue+role1HB role recall0.25
HB same residue2HB residue recall0.50

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
507 0.3771837984194203 -1.155 -31.9494 3 15 0 0.00 0.00 - no Open
519 1.4342819729042058 -0.92092 -23.3081 4 19 17 0.81 0.25 - no Current
560 1.5514926483220204 -0.959439 -26.5577 5 14 0 0.00 0.00 - no Open
555 1.8654263966149012 -0.959208 -25.9063 5 14 0 0.00 0.00 - no Open
517 2.2213547153832276 -1.09021 -31.3015 6 20 0 0.00 0.00 - no Open
542 2.9002439451927176 -1.01929 -27.9611 5 18 0 0.00 0.00 - no Open
525 2.9778557631848654 -1.02688 -28.0687 5 14 1 0.05 0.00 - no Open
554 3.3019464620203967 -0.802515 -19.0283 5 18 0 0.00 0.00 - no Open
520 3.975288682413952 -0.927826 -24.4524 7 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 -23.308kcal/mol
Ligand efficiency (LE) -0.8037kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.672
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 400.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.87
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 21.51kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 70.67kcal/mol
Minimised FF energy 49.16kcal/mol

SASA & burial

✓ computed
SASA (unbound) 616.3Ų
Total solvent-accessible surface area of free ligand
BSA total 594.2Ų
Buried surface area upon binding
BSA apolar 473.7Ų
Hydrophobic contacts buried
BSA polar 120.5Ų
Polar contacts buried
Fraction buried 96.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1728.1Ų
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 576.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)