FAIRMol

MK155

Pose ID 6300 Compound 73 Pose 204

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T10
L. infantum R5P L. infantum
Ligand MK155

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
11.9 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 1.00, Jaccard 1.00, H-bond role recall 0.45
Burial
61%
Hydrophobic fit
75%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes 65% of hydrophobic surface is solvent-exposed (15/23 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.128 kcal/mol/HA) ✓ Good fit quality (FQ -10.88) ✓ Strong H-bond network (13 bonds) ✓ Good burial (61% SASA buried) ✓ Lipophilic contacts well-matched (75%) ✗ Moderate strain (11.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-33.841
kcal/mol
LE
-1.128
kcal/mol/HA
Fit Quality
-10.88
FQ (Leeson)
HAC
30
heavy atoms
MW
410
Da
LogP
4.14
cLogP
Strain ΔE
11.9 kcal/mol
SASA buried
61%
Lipo contact
75% BSA apolar/total
SASA unbound
701 Ų
Apolar buried
320 Ų

Interaction summary

HB 13 HY 6 PI 3 CLASH 3 ⚠ Exposure 65%

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

🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
65% of hydrophobic surface is solvent-exposed (15/23 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Non-polar atoms 23 Buried (contacted) 8 Exposed 15 LogP 4.14 H-bonds 13
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (5/6 atoms exposed)aliphatic chain/group (6 atoms exposed)
Final rank3.981Score-33.841
Inter norm-1.156Intra norm0.028
Top1000noExcludedno
Contacts17H-bonds13
Artifact reasongeometry warning; 13 clashes; 2 protein clashes
Residues
ALA15 ARG116 ARG140 ARG144 ASN106 ASP13 CYS72 GLY73 GLY75 GLY77 HIS105 HIS14 HIS141 ILE76 LEU101 THR74 TYR49

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6FXWContacts17
PoseOpen native poseHB0
IFP residues
ALA15 ARG116 ARG140 ARG144 ASN106 ASP13 CYS72 GLY73 GLY75 GLY77 HIS105 HIS14 HIS141 ILE76 LEU101 THR74 TYR49
Current overlap17Native recall1.00
Jaccard1.00RMSD-
HB strict7Strict recall0.54
HB same residue+role5HB role recall0.45
HB same residue7HB residue recall0.64

Protein summary

155 residues
Protein targetT10Atoms4590
Residues155Chains1
Residue summaryILE:494; ARG:384; ALA:360; VAL:352; LEU:304; GLU:300; THR:280; MET:272; LYS:220; ASP:216; TYR:210; HIS:204; GLY:182; SER:176; GLN:170; ASN:140

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 0 0.00 0.00 - no Open
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 17 1.00 0.45 - 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 -33.841kcal/mol
Ligand efficiency (LE) -1.1280kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.881
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) 11.94kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 58.56kcal/mol
Minimised FF energy 46.61kcal/mol

SASA & burial

✓ computed
SASA (unbound) 701.2Ų
Total solvent-accessible surface area of free ligand
BSA total 428.9Ų
Buried surface area upon binding
BSA apolar 320.1Ų
Hydrophobic contacts buried
BSA polar 108.8Ų
Polar contacts buried
Fraction buried 61.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 74.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2312.8Ų
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 2417.4Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 675.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)