FAIRMol

Z56833421

Pose ID 3924 Compound 263 Pose 538

DB SELECTIONDocking 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 Z56833421
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
24.0 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.67, Jaccard 0.58, H-bond role recall 0.25
Burial
95%
Hydrophobic fit
71%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.713 kcal/mol/HA) ✓ Good fit quality (FQ -6.57) ✓ Good H-bonds (5 bonds) ✓ Deep burial (95% SASA buried) ✓ Lipophilic contacts well-matched (71%) ✗ High strain energy (24.0 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (5)
Score
-18.549
kcal/mol
LE
-0.713
kcal/mol/HA
Fit Quality
-6.57
FQ (Leeson)
HAC
26
heavy atoms
MW
378
Da
LogP
0.79
cLogP
Strain ΔE
24.0 kcal/mol
SASA buried
95%
Lipo contact
71% BSA apolar/total
SASA unbound
628 Ų
Apolar buried
421 Ų

Interaction summary

HB 5 HY 24 PI 3 CLASH 4
Final rank1.689Score-18.549
Inter norm-0.876Intra norm0.120
Top1000noExcludedno
Contacts17H-bonds5
Artifact reasongeometry warning; 5 clashes; 1 protein clash; moderate strain Δ 24.0
Residues
ALA34 ARG100 ARG59 ASP54 GLN56 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE58 PHE94 THR184 TYR166 VAL32 VAL33

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

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 strict1Strict recall0.20
HB same residue+role1HB role recall0.25
HB same residue1HB residue recall0.25

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
538 1.6890420589433734 -0.876062 -18.5492 5 17 14 0.67 0.25 - no Current
578 1.7455832875701298 -1.04513 -22.1499 6 14 0 0.00 0.00 - no Open
569 1.7724214234298203 -1.01549 -23.1894 6 14 0 0.00 0.00 - no Open
569 1.7783840791674765 -1.0041 -24.7592 6 16 0 0.00 0.00 - no Open
545 2.1801023352322155 -1.14702 -29.589 14 14 0 0.00 0.00 - no Open
578 2.2950088551183443 -0.939152 -19.4559 10 15 0 0.00 0.00 - no Open
572 2.4866872836960074 -1.07884 -24.8429 11 15 0 0.00 0.00 - no Open
573 3.847742802334122 -0.869936 -20.868 10 17 0 0.00 0.00 - no Open
564 4.090578712367698 -0.991863 -19.9768 10 13 0 0.00 0.00 - no Open
595 4.424815777537417 -0.904088 -20.6734 8 14 0 0.00 0.00 - no Open
550 4.437704091940646 -1.08851 -28.813 14 16 0 0.00 0.00 - no Open
548 4.53216170732747 -1.11454 -27.9889 13 18 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 -18.549kcal/mol
Ligand efficiency (LE) -0.7134kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.573
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 378.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.79
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 23.96kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 120.75kcal/mol
Minimised FF energy 96.79kcal/mol

SASA & burial

✓ computed
SASA (unbound) 628.2Ų
Total solvent-accessible surface area of free ligand
BSA total 596.3Ų
Buried surface area upon binding
BSA apolar 421.1Ų
Hydrophobic contacts buried
BSA polar 175.1Ų
Polar contacts buried
Fraction buried 94.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 70.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1670.5Ų
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 573.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)