FAIRMol

MK16

Pose ID 8307 Compound 365 Pose 177

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T13
T. brucei ODC (Active site) T. brucei Active site
Ligand MK16
PDB1F3T

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
23.4 kcal/mol
Protein clashes
5
Internal clashes
5
Native overlap
contact recall 0.63, Jaccard 0.43, H-bond role recall 0.14
Burial
84%
Hydrophobic fit
80%
Reason: no major geometry red flags detected
5 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.967 kcal/mol/HA) ✓ Good fit quality (FQ -9.23) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (84% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ High strain energy (23.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-28.031
kcal/mol
LE
-0.967
kcal/mol/HA
Fit Quality
-9.23
FQ (Leeson)
HAC
29
heavy atoms
MW
397
Da
LogP
3.64
cLogP
Strain ΔE
23.4 kcal/mol
SASA buried
84%
Lipo contact
80% BSA apolar/total
SASA unbound
672 Ų
Apolar buried
452 Ų

Interaction summary

HB 10 HY 10 PI 2 CLASH 5
Final rank3.556Score-28.031
Inter norm-1.150Intra norm0.183
Top1000noExcludedno
Contacts21H-bonds10
Artifact reasongeometry warning; 13 clashes; 1 protein clash; moderate strain Δ 23.4
Residues
ALA111 ALA67 ARG154 ARG277 ASN112 ASP233 GLU274 GLY199 GLY235 GLY236 GLY237 GLY276 HIS197 ILE234 LYS69 PHE196 PRO113 SER195 SER200 THR132 TYR389

Protein summary

411 residues
Protein targetT13Atoms6340
Residues411Chains1
Residue summaryVAL:624; LEU:551; LYS:506; ARG:480; PHE:460; ILE:418; ASP:348; GLU:332; THR:322; TYR:315; PRO:308; ALA:290; SER:264; GLY:224; ASN:210; GLN:170

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name1F3TContacts19
PoseOpen native poseHB0
IFP residues
ALA111 ALA67 ARG154 ARG277 ASP332 ASP88 CYS70 GLU274 GLY236 GLY237 GLY276 HIS197 LYS69 PHE238 PRO275 SER200 TYR278 TYR331 TYR389
Current overlap12Native recall0.63
Jaccard0.43RMSD-
HB strict2Strict recall0.22
HB same residue+role1HB role recall0.14
HB same residue2HB residue recall0.29

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
218 0.8702932048363431 -0.908629 -24.464 4 18 0 0.00 0.00 - no Open
299 2.0379983094372447 -0.947945 -23.6822 3 18 0 0.00 0.00 - no Open
317 2.1527347432726276 -0.941543 -26.1251 3 17 0 0.00 0.00 - no Open
240 2.2587325616107607 -0.832091 -21.6042 4 13 0 0.00 0.00 - no Open
240 3.2818274910563994 -0.786521 -18.603 7 16 0 0.00 0.00 - no Open
177 3.5557639252536166 -1.14994 -28.0313 10 21 12 0.63 0.14 - no Current
260 3.6013232851727364 -0.851461 -20.5074 10 18 0 0.00 0.00 - no Open
220 4.999612194010174 -1.09022 -27.133 11 22 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 -28.031kcal/mol
Ligand efficiency (LE) -0.9666kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.227
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 397.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.64
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 23.38kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 41.28kcal/mol
Minimised FF energy 17.90kcal/mol

SASA & burial

✓ computed
SASA (unbound) 671.8Ų
Total solvent-accessible surface area of free ligand
BSA total 560.6Ų
Buried surface area upon binding
BSA apolar 451.6Ų
Hydrophobic contacts buried
BSA polar 109.1Ų
Polar contacts buried
Fraction buried 83.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2647.8Ų
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 3461.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1368.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)