FAIRMol

MK155

Pose ID 13832 Compound 73 Pose 274

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T21
T. cruzi R5P T. cruzi
Ligand MK155
PDB3K7O

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
14.0 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.93, Jaccard 0.72, H-bond role recall 0.56
Burial
67%
Hydrophobic fit
77%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.891 kcal/mol/HA) ✓ Good fit quality (FQ -8.60) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (67% SASA buried) ✓ Lipophilic contacts well-matched (77%) ✗ Moderate strain (14.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-26.730
kcal/mol
LE
-0.891
kcal/mol/HA
Fit Quality
-8.60
FQ (Leeson)
HAC
30
heavy atoms
MW
410
Da
LogP
4.14
cLogP
Strain ΔE
14.0 kcal/mol
SASA buried
67%
Lipo contact
77% BSA apolar/total
SASA unbound
701 Ų
Apolar buried
363 Ų

Interaction summary

HB 9 HY 7 PI 5 CLASH 3
Final rank2.673Score-26.730
Inter norm-0.971Intra norm0.080
Top1000noExcludedno
Contacts17H-bonds9
Artifact reasongeometry warning; 12 clashes; 1 protein clash
Residues
ARG137 ARG141 ASN103 HIS102 ARG113 ASP10 CYS69 GLY70 GLY72 GLY74 HIS11 ILE73 MET75 PRO12 SER43 SER71 TYR46

Protein summary

305 residues
Protein targetT21Atoms4646
Residues305Chains2
Residue summaryARG:576; ILE:532; VAL:512; GLU:420; ALA:360; PHE:240; HIS:238; LYS:220; THR:210; LEU:190; PRO:168; TYR:168; GLY:154; SER:154; ASP:144; ASN:112

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name3K7OContacts14
PoseOpen native poseHB0
IFP residues
ARG137 ARG141 ASN103 HIS102 HIS138 ASP10 CYS69 GLY70 GLY74 HIS11 ILE73 PRO12 SER71 TYR46
Current overlap13Native recall0.93
Jaccard0.72RMSD-
HB strict5Strict recall0.42
HB same residue+role5HB role recall0.56
HB same residue6HB residue recall0.75

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
327 0.8171546905266917 -0.881496 -24.9437 2 19 0 0.00 0.00 - no Open
252 1.25262528314132 -0.815055 -21.9899 5 19 0 0.00 0.00 - no Open
190 2.393610264960986 -1.01227 -27.9274 9 17 0 0.00 0.00 - no Open
274 2.6728153685243323 -0.971128 -26.73 9 17 13 0.93 0.56 - no Current
228 3.509170011564179 -0.852226 -22.326 3 16 0 0.00 0.00 - no Open
296 3.6097912474495737 -0.80505 -19.7428 6 12 0 0.00 0.00 - no Open
294 3.8954333947123394 -0.850379 -23.5994 8 19 0 0.00 0.00 - no Open
204 3.980686356420171 -1.15557 -33.8409 13 17 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 -26.730kcal/mol
Ligand efficiency (LE) -0.8910kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.595
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 410.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.14
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 14.04kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 54.18kcal/mol
Minimised FF energy 40.14kcal/mol

SASA & burial

✓ computed
SASA (unbound) 701.4Ų
Total solvent-accessible surface area of free ligand
BSA total 470.9Ų
Buried surface area upon binding
BSA apolar 363.1Ų
Hydrophobic contacts buried
BSA polar 107.8Ų
Polar contacts buried
Fraction buried 67.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 77.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2298.2Ų
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 2482.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 759.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)