FAIRMol

MK47

Pose ID 14461 Compound 801 Pose 223

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 MK47

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native mixed SASA done
Strain ΔE
48.8 kcal/mol
Protein clashes
10
Internal clashes
10
Native overlap
contact recall 0.48, Jaccard 0.34, H-bond role recall 0.36
Burial
92%
Hydrophobic fit
64%
Reason: 10 protein-contact clashes, 10 internal clashes, strain 48.8 kcal/mol
strain ΔE 48.8 kcal/mol 10 protein-contact clashes 10 intramolecular clashes 81% of hydrophobic surface is solvent-exposed (13/16 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. 3 — Harmful (10–100 mg/L)
Daphnia EC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.993 kcal/mol/HA) ✓ Good fit quality (FQ -8.90) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (92% SASA buried) ✓ Lipophilic contacts well-matched (64%) ✗ Extreme strain energy (48.8 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (6)
Score
-23.833
kcal/mol
LE
-0.993
kcal/mol/HA
Fit Quality
-8.90
FQ (Leeson)
HAC
24
heavy atoms
MW
367
Da
LogP
3.19
cLogP
Final rank
6.3559
rank score
Inter norm
-1.303
normalised
Contacts
18
H-bonds 16
Strain ΔE
48.8 kcal/mol
SASA buried
92%
Lipo contact
64% BSA apolar/total
SASA unbound
553 Ų
Apolar buried
326 Ų

Interaction summary

HBD 2 HBA 8 HY 2 PI 0 CLASH 10

HBD/HBA · H-bonds (geometric)

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

PI · π–π interactions

No pi · π–π interactions detected for this pose.

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 overlap10Native recall0.48
Jaccard0.34RMSD-
HB strict5Strict recall0.33
HB same residue+role4HB role recall0.36
HB same residue4HB residue recall0.36

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
250 0.33124369498846573 -1.29643 -23.0727 5 18 0 0.00 0.00 - no Open
306 1.4980844275439626 -1.16076 -23.1033 5 15 0 0.00 0.00 - no Open
302 2.3012365417379717 -1.12079 -20.9957 6 10 0 0.00 0.00 - no Open
220 2.4491462354209257 -1.17492 -27.4486 11 14 0 0.00 0.00 - no Open
246 2.5415044901747534 -1.09194 -21.3662 6 14 0 0.00 0.00 - no Open
304 3.2694936552292573 -0.787157 -13.9191 10 13 0 0.00 0.00 - no Open
223 6.3559024232398045 -1.30285 -23.833 16 18 10 0.48 0.36 - 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 -23.833kcal/mol
Ligand efficiency (LE) -0.9930kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.900
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 24HA

Physicochemical properties

Molecular weight 366.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.19
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 48.84kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 50.00kcal/mol
Minimised FF energy 1.16kcal/mol

SASA & burial

✓ computed
SASA (unbound) 553.0Ų
Total solvent-accessible surface area of free ligand
BSA total 505.7Ų
Buried surface area upon binding
BSA apolar 326.0Ų
Hydrophobic contacts buried
BSA polar 179.7Ų
Polar contacts buried
Fraction buried 91.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 64.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1246.1Ų
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 488.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)