FAIRMol

CKP-29

Pose ID 9125 Compound 6 Pose 317

DB SELECTIONDocking 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 CKP-29
PDB1NJJ

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising and worth follow-up
Binding strong Geometry high Native mixed SASA done
Strain ΔE
14.2 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.53, Jaccard 0.42, H-bond role recall 0.20
Burial
78%
Hydrophobic fit
96%
Reason: no major geometry red flags detected
2 protein-contact clashes 61% of hydrophobic surface is solvent-exposed (11/18 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 ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.078 kcal/mol/HA) ✓ Good fit quality (FQ -9.20) ✓ Good H-bonds (4 bonds) ✓ Deep burial (78% SASA buried) ✓ Lipophilic contacts well-matched (96%) ✗ Moderate strain (14.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-22.645
kcal/mol
LE
-1.078
kcal/mol/HA
Fit Quality
-9.20
FQ (Leeson)
HAC
21
heavy atoms
MW
274
Da
LogP
3.24
cLogP
Strain ΔE
14.2 kcal/mol
SASA buried
78%
Lipo contact
96% BSA apolar/total
SASA unbound
517 Ų
Apolar buried
386 Ų

Interaction summary

HB 4 HY 1 PI 0 CLASH 2 ⚠ Exposure 61%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
61% of hydrophobic surface is solvent-exposed (11/18 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 18 Buried (contacted) 7 Exposed 11 LogP 3.24 H-bonds 4
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (1 atom exposed)
Final rank1.728Score-22.645
Inter norm-1.071Intra norm-0.007
Top1000noExcludedno
Contacts12H-bonds4
Artifact reasongeometry warning; 9 clashes; 1 protein clash
Residues
ARG242 ARG337 ASP243 ASP385 GLU384 LEU339 MET386 PHE383 SER282 THR241 VAL335 VAL336

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

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 overlap8Native recall0.53
Jaccard0.42RMSD-
HB strict0Strict recall0.00
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.20

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
277 -0.31095997506505085 -1.49061 -31.2086 7 12 0 0.00 0.00 - no Open
342 0.1477763323184262 -1.21312 -24.9144 3 15 0 0.00 0.00 - no Open
317 1.7283796893642227 -1.07109 -22.6445 4 12 8 0.53 0.20 - no Current
367 3.440919281474244 -1.10017 -22.6552 5 13 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 -22.645kcal/mol
Ligand efficiency (LE) -1.0783kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.198
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 21HA

Physicochemical properties

Molecular weight 274.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.24
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 14.20kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 58.31kcal/mol
Minimised FF energy 44.11kcal/mol

SASA & burial

✓ computed
SASA (unbound) 517.3Ų
Total solvent-accessible surface area of free ligand
BSA total 403.3Ų
Buried surface area upon binding
BSA apolar 385.6Ų
Hydrophobic contacts buried
BSA polar 17.7Ų
Polar contacts buried
Fraction buried 78.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 95.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2451.9Ų
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 1396.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)