FAIRMol

MK154

Pose ID 13188 Compound 2852 Pose 309

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T20
T. brucei TR (Z-site (fragment hotspot)) T. brucei Z-site (fragment hotspot)
Ligand MK154
PDB9IFH

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
23.5 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.88, Jaccard 0.50, H-bond role recall 0.00
Burial
53%
Hydrophobic fit
77%
Reason: no major geometry red flags detected
2 protein-contact clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Daphnia EC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Algae IC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Risk
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.478 kcal/mol/HA) ✓ Good fit quality (FQ -4.74) ✓ Good H-bonds (5 bonds) ✓ Good burial (53% SASA buried) ✓ Lipophilic contacts well-matched (77%) ✗ High strain energy (23.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-15.778
kcal/mol
LE
-0.478
kcal/mol/HA
Fit Quality
-4.74
FQ (Leeson)
HAC
33
heavy atoms
MW
454
Da
LogP
4.80
cLogP
Final rank
3.7865
rank score
Inter norm
-0.568
normalised
Contacts
13
H-bonds 6
Strain ΔE
23.5 kcal/mol
SASA buried
53%
Lipo contact
77% BSA apolar/total
SASA unbound
781 Ų
Apolar buried
322 Ų

Interaction summary

HBD 1 HBA 4 HY 4 PI 2 CLASH 2

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 4.

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.
Name9IFHContacts8
PoseOpen native poseHB0
IFP residues
ASN402 GLU467 LEU399 PHE396 PRO398 SER394 SER470 THR397
Current overlap7Native recall0.88
Jaccard0.50RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

492 residues
Protein targetT20Atoms7539
Residues492Chains1
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:221

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:FAD501

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
257 1.4920287375308006 -0.944617 -23.8107 4 17 0 0.00 0.00 - no Open
251 2.6766618478585213 -0.788192 -19.5632 5 13 0 0.00 0.00 - no Open
384 2.841947707759492 -0.722835 -22.3314 7 15 0 0.00 0.00 - no Open
227 3.5547341151590794 -0.929113 -28.3877 7 17 0 0.00 0.00 - no Open
309 3.786488279726842 -0.56847 -15.7779 6 13 7 0.88 0.00 - no Current
212 4.583895943610404 -0.862298 -25.2616 8 20 0 0.00 0.00 - no Open
189 5.2780681559421225 -0.881399 -25.4739 10 18 0 0.00 0.00 - no Open
226 5.73927763117588 -0.991721 -27.141 12 26 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 -15.778kcal/mol
Ligand efficiency (LE) -0.4781kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -4.744
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 453.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.80
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 23.47kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 63.02kcal/mol
Minimised FF energy 39.55kcal/mol

SASA & burial

✓ computed
SASA (unbound) 780.7Ų
Total solvent-accessible surface area of free ligand
BSA total 416.2Ų
Buried surface area upon binding
BSA apolar 321.8Ų
Hydrophobic contacts buried
BSA polar 94.4Ų
Polar contacts buried
Fraction buried 53.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 77.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3220.7Ų
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 4069.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1500.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)