FAIRMol

MK155

Pose ID 14465 Compound 734 Pose 227

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T22
L. donovani rab5a L. donovani
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 high Native strong SASA done
Strain ΔE
19.7 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.71, Jaccard 0.68, H-bond role recall 0.45
Burial
72%
Hydrophobic fit
79%
Reason: no major geometry red flags detected
1 protein-contact clashes 70% of hydrophobic surface is solvent-exposed (16/23 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Daphnia EC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Algae IC₅₀
Cat. 2 — Toxic (1–10 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 (-0.915 kcal/mol/HA) ✓ Good fit quality (FQ -8.83) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ Moderate strain (19.7 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-27.465
kcal/mol
LE
-0.915
kcal/mol/HA
Fit Quality
-8.83
FQ (Leeson)
HAC
30
heavy atoms
MW
410
Da
LogP
4.14
cLogP
Final rank
4.5645
rank score
Inter norm
-1.068
normalised
Contacts
16
H-bonds 12
Strain ΔE
19.7 kcal/mol
SASA buried
72%
Lipo contact
79% BSA apolar/total
SASA unbound
671 Ų
Apolar buried
382 Ų

Interaction summary

HBD 1 HBA 7 HY 2 PI 1 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 6.

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.
NameRAB5AContacts21
PoseOpen native poseHB0
IFP residues
ALA158 ALA24 ALA40 ASN126 ASN41 ASP129 GLN42 GLU21 GLU73 GLY23 GLY25 LEU130 LEU39 LYS127 LYS159 LYS26 PHE38 SER157 SER22 SER27 SER28
Current overlap15Native recall0.71
Jaccard0.68RMSD-
HB strict6Strict recall0.40
HB same residue+role5HB role recall0.45
HB same residue5HB residue recall0.45

Protein summary

165 residues
Protein targetT22Atoms2561
Residues165Chains1
Residue summaryLEU:363; LYS:242; ALA:231; ARG:214; ILE:190; GLU:180; VAL:144; SER:143; PHE:140; ASN:112; THR:112; TYR:105; GLN:102; ASP:96; GLY:77; TRP:48

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
254 0.9421878815959558 -1.08652 -30.5394 8 13 0 0.00 0.00 - no Open
313 1.070611567424537 -0.87263 -21.7991 5 19 0 0.00 0.00 - no Open
247 1.1050271047072073 -0.764064 -19.9199 3 18 0 0.00 0.00 - no Open
312 2.0468663424797895 -0.905764 -26.5397 3 12 0 0.00 0.00 - no Open
258 2.9118442055019966 -1.12501 -31.7293 4 16 0 0.00 0.00 - no Open
276 3.2822642479917032 -0.804218 -21.7781 4 16 0 0.00 0.00 - no Open
213 4.18837115787037 -0.966775 -26.8458 10 21 0 0.00 0.00 - no Open
227 4.564527394519201 -1.06759 -27.4648 12 16 15 0.71 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 -27.465kcal/mol
Ligand efficiency (LE) -0.9155kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.831
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) 19.71kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 58.84kcal/mol
Minimised FF energy 39.14kcal/mol

SASA & burial

✓ computed
SASA (unbound) 670.6Ų
Total solvent-accessible surface area of free ligand
BSA total 481.1Ų
Buried surface area upon binding
BSA apolar 381.8Ų
Hydrophobic contacts buried
BSA polar 99.3Ų
Polar contacts buried
Fraction buried 71.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1399.6Ų
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 1368.5Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 523.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)