FAIRMol

MK29

Pose ID 9091 Compound 1262 Pose 283

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T14
T. brucei ODC (G418 binding site) T. brucei G418 binding site
Ligand MK29
PDB1NJJ

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 mixed SASA done
Strain ΔE
11.7 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.47, Jaccard 0.41, H-bond role recall 0.40
Burial
66%
Hydrophobic fit
80%
Reason: no major geometry red flags detected
2 protein-contact clashes 71% of hydrophobic surface is solvent-exposed (15/21 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 (-0.818 kcal/mol/HA) ✓ Good fit quality (FQ -7.43) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (66% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ Moderate strain (11.7 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-20.438
kcal/mol
LE
-0.818
kcal/mol/HA
Fit Quality
-7.43
FQ (Leeson)
HAC
25
heavy atoms
MW
342
Da
LogP
4.31
cLogP
Strain ΔE
11.7 kcal/mol
SASA buried
66%
Lipo contact
80% BSA apolar/total
SASA unbound
609 Ų
Apolar buried
323 Ų

Interaction summary

HB 7 HY 1 PI 0 CLASH 2 ⚠ Exposure 71%

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
71% of hydrophobic surface is solvent-exposed (15/21 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 21 Buried (contacted) 6 Exposed 15 LogP 4.31 H-bonds 7
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (5/6 atoms exposed)aliphatic chain/group (6 atoms exposed)
Final rank4.186Score-20.438
Inter norm-0.916Intra norm0.098
Top1000noExcludedno
Contacts9H-bonds7
Artifact reasongeometry warning; 11 clashes; 3 protein clashes
Residues
ARG242 ARG337 ASP243 ASP385 GLU384 LEU339 PHE383 THR241 VAL336

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name1NJJContacts15
PoseOpen native poseHB0
IFP residues
ARG22 ARG242 ARG337 ARG342 ASP243 ASP385 GLN341 GLU384 LEU25 LEU339 LEU382 PRO340 PRO344 SER282 THR241
Current overlap7Native recall0.47
Jaccard0.41RMSD-
HB strict1Strict recall0.17
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

Protein summary

398 residues
Protein targetT14Atoms6140
Residues398Chains1
Residue summaryVAL:592; LEU:513; LYS:484; ARG:432; PHE:420; ILE:418; ASP:349; THR:322; TYR:315; PRO:308; GLU:301; ALA:290; SER:253; GLY:217; ASN:210; GLN:170

Receptor context

1 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 1 Excluded HETATM 0
Kept cofactors / ions
A:ORX602

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
180 1.2753405841528704 -1.12179 -25.6351 7 19 0 0.00 0.00 - no Open
300 2.22332971551258 -1.14752 -26.0885 5 18 0 0.00 0.00 - no Open
203 2.7620845826778937 -1.19377 -25.0678 8 19 0 0.00 0.00 - no Open
380 2.8934951626599332 -1.02286 -21.1841 6 15 0 0.00 0.00 - no Open
301 3.273343699463647 -0.792808 -17.732 6 10 0 0.00 0.00 - no Open
189 3.361396722874519 -1.0661 -25.1956 7 15 0 0.00 0.00 - no Open
247 3.6688427296143553 -1.35024 -30.2174 6 18 0 0.00 0.00 - no Open
249 4.150411199346974 -1.466 -32.3181 6 18 0 0.00 0.00 - no Open
283 4.185532692114118 -0.915922 -20.4383 7 9 7 0.47 0.40 - 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 -20.438kcal/mol
Ligand efficiency (LE) -0.8175kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.432
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 25HA

Physicochemical properties

Molecular weight 342.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.31
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 11.65kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 48.00kcal/mol
Minimised FF energy 36.34kcal/mol

SASA & burial

✓ computed
SASA (unbound) 608.9Ų
Total solvent-accessible surface area of free ligand
BSA total 402.7Ų
Buried surface area upon binding
BSA apolar 322.8Ų
Hydrophobic contacts buried
BSA polar 79.9Ų
Polar contacts buried
Fraction buried 66.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2480.8Ų
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 3349.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1392.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)