FAIRMol

MK172

Pose ID 11140 Compound 1785 Pose 297

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 MK172
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
14.2 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.50, Jaccard 0.30, H-bond role recall 1.00
Burial
66%
Hydrophobic fit
80%
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 (-0.648 kcal/mol/HA) ✓ Good fit quality (FQ -6.43) ✓ Good H-bonds (3 bonds) ✓ Deep burial (66% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ Moderate strain (14.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (20)
Score
-21.396
kcal/mol
LE
-0.648
kcal/mol/HA
Fit Quality
-6.43
FQ (Leeson)
HAC
33
heavy atoms
MW
439
Da
LogP
5.92
cLogP
Final rank
3.3214
rank score
Inter norm
-0.732
normalised
Contacts
14
H-bonds 5
Strain ΔE
14.2 kcal/mol
SASA buried
66%
Lipo contact
80% BSA apolar/total
SASA unbound
746 Ų
Apolar buried
394 Ų

Interaction summary

HBA 3 HY 5 PI 1 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.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap6Native recall0.50
Jaccard0.30RMSD-
HB strict1Strict recall1.00
HB same residue+role1HB role recall1.00
HB same residue1HB residue recall1.00

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
259 1.2497707324385667 -0.848591 -24.6982 1 13 0 0.00 0.00 - no Open
278 2.430330756882116 -0.740586 -18.816 12 14 0 0.00 0.00 - no Open
297 3.321419821143468 -0.731548 -21.3962 5 14 6 0.50 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 -21.396kcal/mol
Ligand efficiency (LE) -0.6484kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.433
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 438.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.92
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 14.20kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 86.89kcal/mol
Minimised FF energy 72.70kcal/mol

SASA & burial

✓ computed
SASA (unbound) 745.8Ų
Total solvent-accessible surface area of free ligand
BSA total 495.8Ų
Buried surface area upon binding
BSA apolar 394.3Ų
Hydrophobic contacts buried
BSA polar 101.5Ų
Polar contacts buried
Fraction buried 66.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6623.3Ų
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 2080.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)