FAIRMol

MK16

Pose ID 9862 Compound 3501 Pose 376

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T15
T. brucei TR (Dimer cleft site) T. brucei Dimer cleft site
Ligand MK16
PDB9IFF

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
31.0 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.62, Jaccard 0.40
Burial
72%
Hydrophobic fit
78%
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 (-0.617 kcal/mol/HA) ✓ Good fit quality (FQ -5.89) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Very high strain energy (31.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-17.884
kcal/mol
LE
-0.617
kcal/mol/HA
Fit Quality
-5.89
FQ (Leeson)
HAC
29
heavy atoms
MW
397
Da
LogP
3.64
cLogP
Strain ΔE
31.0 kcal/mol
SASA buried
72%
Lipo contact
78% BSA apolar/total
SASA unbound
664 Ų
Apolar buried
376 Ų

Interaction summary

HB 8 HY 9 PI 0 CLASH 2

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

Final rank3.039Score-17.884
Inter norm-0.850Intra norm0.234
Top1000noExcludedno
Contacts15H-bonds8
Artifact reasongeometry warning; 14 clashes; 1 protein clash; high strain Δ 30.6
Residues
ALA244 ALA90 ARG74 ASN245 ASP71 GLY214 GLY215 GLY246 LYS211 LYS89 MET70 PRO212 PRO213 TYR408 VAL88

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap8Native recall0.62
Jaccard0.40RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

489 residues
Protein targetT15Atoms7420
Residues489Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:264; MET:204

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
376 3.0386066159493392 -0.850471 -17.8845 8 15 8 0.62 - - no Current
297 3.605093104015848 -0.794204 -18.4183 6 14 0 0.00 - - no Open
185 3.7913852384024302 -0.958573 -20.3291 8 17 0 0.00 - - no Open
277 4.649181311495193 -0.876009 -22.4539 6 16 0 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 -17.884kcal/mol
Ligand efficiency (LE) -0.6167kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.887
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 397.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.64
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 31.03kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 47.33kcal/mol
Minimised FF energy 16.30kcal/mol

SASA & burial

✓ computed
SASA (unbound) 663.7Ų
Total solvent-accessible surface area of free ligand
BSA total 480.1Ų
Buried surface area upon binding
BSA apolar 376.1Ų
Hydrophobic contacts buried
BSA polar 104.1Ų
Polar contacts buried
Fraction buried 72.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3008.6Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1542.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)