FAIRMol

Z19222909

Pose ID 4009 Compound 436 Pose 623

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 Z19222909
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
15.4 kcal/mol
Protein clashes
5
Internal clashes
5
Native overlap
contact recall 0.67, Jaccard 0.56, H-bond role recall 0.00
Burial
92%
Hydrophobic fit
89%
Reason: no major geometry red flags detected
5 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.597 kcal/mol/HA) ✓ Good fit quality (FQ -5.93) ✓ Deep burial (92% SASA buried) ✓ Lipophilic contacts well-matched (89%) ✗ Moderate strain (15.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (16)
Score
-19.713
kcal/mol
LE
-0.597
kcal/mol/HA
Fit Quality
-5.93
FQ (Leeson)
HAC
33
heavy atoms
MW
451
Da
LogP
6.36
cLogP
Strain ΔE
15.4 kcal/mol
SASA buried
92%
Lipo contact
89% BSA apolar/total
SASA unbound
733 Ų
Apolar buried
597 Ų

Interaction summary

HB 1 HY 24 PI 4 CLASH 5

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 rank3.789Score-19.713
Inter norm-0.758Intra norm0.046
Top1000noExcludedno
Contacts18H-bonds1
Artifact reasongeometry warning; 16 clashes; 2 protein clashes
Residues
ALA34 ARG100 ARG59 GLN56 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE58 PHE94 PRO91 SER98 THR86 TYR166 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 overlap14Native recall0.67
Jaccard0.56RMSD-
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
634 0.7703295841755433 -1.01228 -30.485 3 17 0 0.00 0.00 - no Open
619 0.9227104539675254 -0.988832 -29.8563 3 18 0 0.00 0.00 - no Open
635 0.9872537622581262 -0.909874 -26.5051 1 17 1 0.05 0.00 - no Open
624 1.3874062123717454 -0.912299 -28.609 1 18 0 0.00 0.00 - no Open
623 2.5042832255124376 -0.78944 -24.6851 3 17 0 0.00 0.00 - no Open
641 2.575160669811322 -0.729551 -19.9056 7 12 0 0.00 0.00 - no Open
624 3.143187244987514 -0.689014 -19.0993 3 12 0 0.00 0.00 - no Open
637 3.1469015228773753 -0.653269 -16.8113 4 9 0 0.00 0.00 - no Open
623 3.788589440580992 -0.75815 -19.7132 1 18 14 0.67 0.00 - no Current
633 4.551784139291988 -0.853444 -26.9236 7 19 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 -19.713kcal/mol
Ligand efficiency (LE) -0.5974kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.927
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 450.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 6.36
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 15.44kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 129.37kcal/mol
Minimised FF energy 113.94kcal/mol

SASA & burial

✓ computed
SASA (unbound) 732.6Ų
Total solvent-accessible surface area of free ligand
BSA total 671.6Ų
Buried surface area upon binding
BSA apolar 597.2Ų
Hydrophobic contacts buried
BSA polar 74.4Ų
Polar contacts buried
Fraction buried 91.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 88.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1880.9Ų
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 586.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)