FAIRMol

Z56821488

Pose ID 3918 Compound 2608 Pose 532

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 Z56821488
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
26.8 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.71, Jaccard 0.65, H-bond role recall 0.00
Burial
91%
Hydrophobic fit
78%
Reason: 1 severe internal clashes
1 severe internal clashes 4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.511 kcal/mol/HA) ✓ Good fit quality (FQ -4.88) ✓ Deep burial (91% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ High strain energy (26.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-14.835
kcal/mol
LE
-0.511
kcal/mol/HA
Fit Quality
-4.88
FQ (Leeson)
HAC
29
heavy atoms
MW
447
Da
LogP
5.33
cLogP
Strain ΔE
26.8 kcal/mol
SASA buried
91%
Lipo contact
78% BSA apolar/total
SASA unbound
697 Ų
Apolar buried
493 Ų

Interaction summary

HB 1 HY 24 PI 4 CLASH 4 Severe 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 rank2.197Score-14.835
Inter norm-0.843Intra norm0.179
Top1000noExcludedno
Contacts17H-bonds1
Artifact reasongeometry warning; 10 clashes; 1 protein clash; moderate strain Δ 26.8
Residues
ALA34 ARG59 ASP54 GLN56 ILE47 LEU90 LEU97 MET55 NDP301 PHE58 PHE94 PRO91 THR184 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 overlap15Native recall0.71
Jaccard0.65RMSD-
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
530 0.5250301583940824 -1.13446 -30.5126 5 18 0 0.00 0.00 - no Open
558 1.4699525519425631 -0.921866 -19.6322 4 16 0 0.00 0.00 - no Open
536 1.9079564582586215 -0.936292 -22.7415 2 16 1 0.05 0.00 - no Open
563 2.0566042597876093 -0.771845 -14.9745 2 18 0 0.00 0.00 - no Open
532 2.1972836050937206 -0.843441 -14.8348 1 17 15 0.71 0.00 - no Current
564 2.626611580182352 -0.738634 -20.7231 7 15 0 0.00 0.00 - no Open
560 2.7895108040750816 -0.957168 -24.9089 7 18 0 0.00 0.00 - no Open
548 4.529608506315844 -1.15162 -28.6945 10 21 0 0.00 0.00 - no Open
541 5.26808969809745 -0.966454 -25.0402 8 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 -14.835kcal/mol
Ligand efficiency (LE) -0.5115kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -4.883
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 447.0Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.33
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 26.81kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 40.54kcal/mol
Minimised FF energy 13.73kcal/mol

SASA & burial

✓ computed
SASA (unbound) 697.2Ų
Total solvent-accessible surface area of free ligand
BSA total 631.4Ų
Buried surface area upon binding
BSA apolar 493.2Ų
Hydrophobic contacts buried
BSA polar 138.2Ų
Polar contacts buried
Fraction buried 90.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1792.6Ų
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 574.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)