FAIRMol

MK46

Pose ID 8313 Compound 970 Pose 183

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T13
T. brucei ODC (Active site) T. brucei Active site
Ligand MK46
PDB1F3T

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
24.5 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.74, Jaccard 0.70, H-bond role recall 0.43
Burial
81%
Hydrophobic fit
66%
Reason: no major geometry red flags detected
1 protein-contact clashes 50% of hydrophobic surface appears solvent-exposed (9/18 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.149 kcal/mol/HA) ✓ Good fit quality (FQ -10.59) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (81% SASA buried) ✓ Lipophilic contacts well-matched (66%) ✗ High strain energy (24.5 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (6)
Score
-29.877
kcal/mol
LE
-1.149
kcal/mol/HA
Fit Quality
-10.59
FQ (Leeson)
HAC
26
heavy atoms
MW
395
Da
LogP
3.80
cLogP
Final rank
2.5594
rank score
Inter norm
-1.278
normalised
Contacts
15
H-bonds 10
Strain ΔE
24.5 kcal/mol
SASA buried
81%
Lipo contact
66% BSA apolar/total
SASA unbound
676 Ų
Apolar buried
363 Ų

Interaction summary

HBA 9 HY 3 PI 2 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 3.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name1F3TContacts19
PoseOpen native poseHB0
IFP residues
ALA111 ALA67 ARG154 ARG277 ASP332 ASP88 CYS70 GLU274 GLY236 GLY237 GLY276 HIS197 LYS69 PHE238 PRO275 SER200 TYR278 TYR331 TYR389
Current overlap14Native recall0.74
Jaccard0.70RMSD-
HB strict5Strict recall0.56
HB same residue+role3HB role recall0.43
HB same residue3HB residue recall0.43

Protein summary

411 residues
Protein targetT13Atoms6340
Residues411Chains1
Residue summaryVAL:624; LEU:551; LYS:506; ARG:480; PHE:460; ILE:418; ASP:348; GLU:332; THR:322; TYR:315; PRO:308; ALA:290; SER:264; GLY:224; ASN:210; GLN:170

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
183 2.559434706767822 -1.27831 -29.8772 10 15 14 0.74 0.43 - no Current
305 2.8468426084060257 -1.0152 -19.8274 4 16 0 0.00 0.00 - no Open
204 5.692060655454002 -1.06591 -24.8817 13 13 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 -29.877kcal/mol
Ligand efficiency (LE) -1.1491kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.587
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 394.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.80
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 24.54kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 49.52kcal/mol
Minimised FF energy 24.98kcal/mol

SASA & burial

✓ computed
SASA (unbound) 676.2Ų
Total solvent-accessible surface area of free ligand
BSA total 546.3Ų
Buried surface area upon binding
BSA apolar 362.9Ų
Hydrophobic contacts buried
BSA polar 183.4Ų
Polar contacts buried
Fraction buried 80.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 66.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2571.7Ų
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 3461.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1370.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)