FAIRMol

MK217

Pose ID 3644 Compound 892 Pose 258

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 MK217
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 high Native strong SASA done
Strain ΔE
29.4 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.62, Jaccard 0.50, H-bond role recall 0.25
Burial
93%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
2 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.641 kcal/mol/HA) ✓ Good fit quality (FQ -6.19) ✓ Good H-bonds (4 bonds) ✓ Deep burial (93% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ High strain energy (29.4 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (4) ✗ Many internal clashes (14)
Score
-19.244
kcal/mol
LE
-0.641
kcal/mol/HA
Fit Quality
-6.19
FQ (Leeson)
HAC
30
heavy atoms
MW
427
Da
LogP
4.61
cLogP
Strain ΔE
29.4 kcal/mol
SASA buried
93%
Lipo contact
82% BSA apolar/total
SASA unbound
697 Ų
Apolar buried
535 Ų

Interaction summary

HB 4 HY 24 PI 4 CLASH 2

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 rank1.339Score-19.244
Inter norm-0.810Intra norm0.169
Top1000noExcludedno
Contacts18H-bonds4
Artifact reasongeometry warning; 14 clashes; 4 protein contact clashes; 1 severe cofactor-context clash; moderate strain Δ 29.4
Residues
ALA34 ARG100 ARG59 GLN56 GLU50 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE58 PHE94 PRO52 PRO91 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 overlap13Native recall0.62
Jaccard0.50RMSD-
HB strict1Strict recall0.20
HB same residue+role1HB role recall0.25
HB same residue1HB residue recall0.25

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
271 0.33329873631733 -1.34281 -36.348 7 18 0 0.00 0.00 - no Open
258 1.3392324839671519 -0.81043 -19.2443 4 18 13 0.62 0.25 - no Current
264 1.5746756141716811 -1.21355 -30.9473 7 16 0 0.00 0.00 - no Open
265 1.6344119354406168 -0.951662 -25.7152 6 12 0 0.00 0.00 - no Open
246 1.983765066084416 -1.07479 -29.1429 4 17 1 0.05 0.00 - no Open
328 2.1144353827617395 -0.854583 -25.3471 2 17 0 0.00 0.00 - no Open
287 2.915809060586571 -1.02101 -25.5206 12 18 0 0.00 0.00 - no Open
311 4.111083386289892 -0.863187 -20.0163 8 14 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 -19.244kcal/mol
Ligand efficiency (LE) -0.6415kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.188
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 426.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.61
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.39kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 63.47kcal/mol
Minimised FF energy 34.09kcal/mol

SASA & burial

✓ computed
SASA (unbound) 697.3Ų
Total solvent-accessible surface area of free ligand
BSA total 650.6Ų
Buried surface area upon binding
BSA apolar 535.0Ų
Hydrophobic contacts buried
BSA polar 115.6Ų
Polar contacts buried
Fraction buried 93.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1793.2Ų
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 585.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)