FAIRMol

Z19041503

Pose ID 3857 Compound 2625 Pose 471

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 Z19041503
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
17.9 kcal/mol
Protein clashes
4
Internal clashes
5
Native overlap
contact recall 0.81, Jaccard 0.74, H-bond role recall 0.00
Burial
94%
Hydrophobic fit
80%
Reason: no major geometry red flags detected
4 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.744 kcal/mol/HA) ✓ Good fit quality (FQ -7.10) ✓ Deep burial (94% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ Moderate strain (17.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-21.580
kcal/mol
LE
-0.744
kcal/mol/HA
Fit Quality
-7.10
FQ (Leeson)
HAC
29
heavy atoms
MW
450
Da
LogP
4.15
cLogP
Strain ΔE
17.9 kcal/mol
SASA buried
94%
Lipo contact
80% BSA apolar/total
SASA unbound
693 Ų
Apolar buried
517 Ų

Interaction summary

HB 2 HY 24 PI 1 CLASH 5
Final rank2.650Score-21.580
Inter norm-0.872Intra norm0.092
Top1000noExcludedno
Contacts19H-bonds2
Artifact reasongeometry warning; 13 clashes; 1 protein clash; 1 cofactor-context clash
Residues
ALA34 ARG100 ARG59 ASP54 HIS182 ILE47 LEU90 LEU97 MET55 NDP301 PHE58 PHE94 PRO91 SER89 THR184 THR86 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
Jaccard0.74RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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
463 1.857417542478169 -1.11162 -24.414 6 21 0 0.00 0.00 - no Open
471 2.6502164879487613 -0.871671 -21.5801 2 19 17 0.81 0.00 - no Current
480 4.489730344288321 -1.07245 -29.0277 8 21 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 -21.580kcal/mol
Ligand efficiency (LE) -0.7441kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.103
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties
Molecular weight 450.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.15
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)
Strain energy (ΔE) 17.93kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 84.73kcal/mol
Minimised FF energy 66.81kcal/mol

SASA & burial

✓ computed
SASA (unbound) 692.7Ų
Total solvent-accessible surface area of free ligand
BSA total 647.9Ų
Buried surface area upon binding
BSA apolar 517.1Ų
Hydrophobic contacts buried
BSA polar 130.8Ų
Polar contacts buried
Fraction buried 93.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1788.6Ų
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 577.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)