FAIRMol

MK211

Pose ID 11149 Compound 446 Pose 306

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T17
T. brucei TR (Doorstop site) T. brucei Doorstop site
Ligand MK211
PDB5S9T

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
20.1 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.67, Jaccard 0.32, H-bond role recall 1.00
Burial
75%
Hydrophobic fit
79%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.723 kcal/mol/HA) ✓ Good fit quality (FQ -7.17) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (75% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ High strain energy (20.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-23.850
kcal/mol
LE
-0.723
kcal/mol/HA
Fit Quality
-7.17
FQ (Leeson)
HAC
33
heavy atoms
MW
452
Da
LogP
5.61
cLogP
Strain ΔE
20.1 kcal/mol
SASA buried
75%
Lipo contact
79% BSA apolar/total
SASA unbound
780 Ų
Apolar buried
465 Ų

Interaction summary

HB 8 HY 17 PI 1 CLASH 1
Final rank4.480Score-23.850
Inter norm-0.892Intra norm0.169
Top1000noExcludedno
Contacts21H-bonds8
Artifact reasongeometry warning; 12 clashes; 3 protein clashes
Residues
ALA284 ALA363 ARG287 ARG331 ARG361 CYS375 GLY197 GLY229 GLY286 GLY376 HIS359 ILE199 LEU332 MET333 PHE198 PHE230 SER200 SER364 THR360 THR374 VAL362

Protein summary

1033 residues
Protein targetT17Atoms15160
Residues1033Chains2
Residue summaryVAL:1536; LEU:1387; LYS:1386; ILE:1064; GLU:900; THR:868; ARG:816; PHE:800; ALA:780; ASN:700; PRO:686; GLY:672; SER:616; TYR:588; ASP:528; MET:408

Receptor context

2 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 2 Excluded HETATM 0
Kept cofactors / ions
A:FAD501 B:FAD501

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap8Native recall0.67
Jaccard0.32RMSD-
HB strict1Strict recall1.00
HB same residue+role1HB role recall1.00
HB same residue1HB residue recall1.00

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
323 0.9281368038146153 -0.881859 -27.4888 7 19 0 0.00 0.00 - no Open
240 0.9326315971844619 -0.794452 -22.7292 5 18 0 0.00 0.00 - no Open
255 1.6709017941564726 -0.71887 -19.1442 4 18 0 0.00 0.00 - no Open
202 2.4158386797718454 -0.908111 -29.0361 6 17 0 0.00 0.00 - no Open
333 2.5964806201553707 -0.779283 -26.5781 4 18 0 0.00 0.00 - no Open
316 2.7681947305161128 -0.62579 -17.3714 9 11 0 0.00 0.00 - no Open
321 2.7847742168238394 -0.855996 -21.2829 7 16 0 0.00 0.00 - no Open
208 3.2737333179935955 -0.86353 -26.0064 11 21 0 0.00 0.00 - no Open
282 3.2908590644988394 -0.643978 -17.2385 5 17 0 0.00 0.00 - no Open
266 3.6696914491795702 -0.969686 -27.9485 9 18 0 0.00 0.00 - no Open
260 3.724512830525498 -0.752336 -20.2105 6 14 0 0.00 0.00 - no Open
306 4.479899767376692 -0.891979 -23.8503 8 21 8 0.67 1.00 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -23.850kcal/mol
Ligand efficiency (LE) -0.7227kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.171
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 451.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.61
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 20.05kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 53.63kcal/mol
Minimised FF energy 33.58kcal/mol

SASA & burial

✓ computed
SASA (unbound) 779.9Ų
Total solvent-accessible surface area of free ligand
BSA total 584.8Ų
Buried surface area upon binding
BSA apolar 464.6Ų
Hydrophobic contacts buried
BSA polar 120.2Ų
Polar contacts buried
Fraction buried 75.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6636.8Ų
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 8063.1Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 2079.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)