FAIRMol

Z1541638525

Pose ID 3996 Compound 124 Pose 610

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 Z1541638525
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
52.2 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.81, Jaccard 0.71, H-bond role recall 0.25
Burial
96%
Hydrophobic fit
88%
Reason: 6 internal clashes, strain 52.2 kcal/mol
strain ΔE 52.2 kcal/mol 6 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.705 kcal/mol/HA) ✓ Good fit quality (FQ -6.87) ✓ Good H-bonds (4 bonds) ✓ Deep burial (96% SASA buried) ✓ Lipophilic contacts well-matched (88%) ✗ Extreme strain energy (52.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-21.869
kcal/mol
LE
-0.705
kcal/mol/HA
Fit Quality
-6.87
FQ (Leeson)
HAC
31
heavy atoms
MW
439
Da
LogP
2.56
cLogP
Strain ΔE
52.2 kcal/mol
SASA buried
96%
Lipo contact
88% BSA apolar/total
SASA unbound
679 Ų
Apolar buried
574 Ų

Interaction summary

HB 4 HY 24 PI 3 CLASH 6
Final rank4.115Score-21.869
Inter norm-0.853Intra norm0.147
Top1000noExcludedno
Contacts20H-bonds4
Artifact reasongeometry warning; 12 clashes; 2 protein clashes; high strain Δ 52.2
Residues
ALA34 ARG100 ARG59 ASP54 GLN56 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE58 PHE94 THR184 THR86 TRP49 TYR166 TYR57 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 overlap17Native recall0.81
Jaccard0.71RMSD-
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
616 1.111496592088737 -0.884205 -22.6768 2 17 0 0.00 0.00 - no Open
616 1.9754339533636078 -1.0646 -31.6893 2 17 0 0.00 0.00 - no Open
629 2.3345254061255214 -0.812677 -16.2566 5 19 0 0.00 0.00 - no Open
603 2.3880621061810063 -1.0371 -29.7296 7 17 0 0.00 0.00 - no Open
613 2.817356113057871 -0.857551 -27.4261 7 22 0 0.00 0.00 - no Open
605 3.0308665069554115 -0.89006 -25.1977 5 17 1 0.05 0.00 - no Open
632 3.194601979500991 -0.797748 -24.2342 6 13 0 0.00 0.00 - no Open
627 3.6050960718855105 -0.815297 -22.2564 8 15 0 0.00 0.00 - no Open
614 3.664946195262811 -0.73012 -23.1809 4 14 0 0.00 0.00 - no Open
610 4.115100225847642 -0.852848 -21.8685 4 20 17 0.81 0.25 - 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 -21.869kcal/mol
Ligand efficiency (LE) -0.7054kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.873
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 438.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.56
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 52.22kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -50.62kcal/mol
Minimised FF energy -102.84kcal/mol

SASA & burial

✓ computed
SASA (unbound) 679.0Ų
Total solvent-accessible surface area of free ligand
BSA total 652.3Ų
Buried surface area upon binding
BSA apolar 574.4Ų
Hydrophobic contacts buried
BSA polar 77.9Ų
Polar contacts buried
Fraction buried 96.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 88.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1831.8Ų
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 578.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)