FAIRMol

Z1521553843

Pose ID 3981 Compound 2355 Pose 595

DB SELECTIONDocking pose analysis is being read from this database.
Compound detail Protein structures Back to compounds
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T06
T. brucei DHFR T. brucei
Ligand Z1521553843
PDB8RHT↗

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising and worth follow-up
Binding strong Geometry high Native strong SASA done
Strain ΔE
16.2 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.81, Jaccard 0.81, H-bond role recall 0.50
Burial
100%
Hydrophobic fit
90%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.051 kcal/mol/HA) ✓ Good fit quality (FQ -8.80) ✓ Deep burial (100% SASA buried) ✓ Lipophilic contacts well-matched (90%) ✗ Moderate strain (16.2 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (2) ✗ Internal clashes (8)
Score
-21.022
kcal/mol
LE
-1.051
kcal/mol/HA
Fit Quality
-8.80
FQ (Leeson)
HAC
20
heavy atoms
MW
272
Da
LogP
3.61
cLogP
Strain ΔE
16.2 kcal/mol
SASA buried
100%
Lipo contact
90% BSA apolar/total
SASA unbound
492 Ų
Apolar buried
441 Ų

Interaction summary

HB 2 HY 24 PI 1 CLASH 1

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 rank0.145Score-21.022
Inter norm-1.138Intra norm0.087
Top1000noExcludedno
Contacts17H-bonds2
Artifact reasongeometry warning; 8 clashes; 2 protein contact clashes
Residues
ALA34 ASP54 ILE160 ILE47 LEU90 MET55 NDP301 PHE233 PHE58 PRO91 SER89 THR184 THR86 TYR166 TYR57 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
Jaccard0.81RMSD-
HB strict2Strict recall0.40
HB same residue+role2HB role recall0.50
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
595 0.14545837086681396 -1.1384 -21.0217 2 17 17 0.81 0.50 - 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 -21.022kcal/mol
Ligand efficiency (LE) -1.0511kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.796
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 20HA

Physicochemical properties
Molecular weight 272.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.61
Lipinski: ≤ 5
Rotatable bonds 2

Conformational strain (MMFF94s)
Strain energy (ΔE) 16.22kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 69.58kcal/mol
Minimised FF energy 53.37kcal/mol

SASA & burial

✓ computed
SASA (unbound) 491.5Ų
Total solvent-accessible surface area of free ligand
BSA total 491.3Ų
Buried surface area upon binding
BSA apolar 441.1Ų
Hydrophobic contacts buried
BSA polar 50.1Ų
Polar contacts buried
Fraction buried 99.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1656.4Ų
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 593.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)