FAIRMol

KB_HAT_25

Pose ID 9581 Compound 955 Pose 95

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T15
T. brucei TR (Dimer cleft site) T. brucei Dimer cleft site
Ligand KB_HAT_25
PDB9IFF

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
15.3 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.77, Jaccard 0.48
Burial
77%
Hydrophobic fit
87%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.694 kcal/mol/HA) ✓ Good fit quality (FQ -6.94) ✓ Deep burial (77% SASA buried) ✓ Lipophilic contacts well-matched (87%) ✗ Moderate strain (15.3 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (2) ✗ Many internal clashes (14)
Score
-23.591
kcal/mol
LE
-0.694
kcal/mol/HA
Fit Quality
-6.94
FQ (Leeson)
HAC
34
heavy atoms
MW
475
Da
LogP
3.63
cLogP
Strain ΔE
15.3 kcal/mol
SASA buried
77%
Lipo contact
87% BSA apolar/total
SASA unbound
797 Ų
Apolar buried
534 Ų

Interaction summary

HB 1 HY 24 PI 1 CLASH 1

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

Final rank1.184Score-23.591
Inter norm-0.697Intra norm0.003
Top1000noExcludedno
Contacts18H-bonds1
Artifact reasongeometry warning; 14 clashes; 2 protein contact clashes
Residues
ALA209 ALA77 ALA90 ARG74 GLU82 GLY85 LEU73 LYS211 LYS89 MET70 PHE83 PRO187 PRO212 PRO213 SER76 TRP81 TYR210 VAL88

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap10Native recall0.77
Jaccard0.48RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

489 residues
Protein targetT15Atoms7420
Residues489Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:264; MET:204

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
95 1.1841529654796734 -0.696503 -23.591 1 18 10 0.77 - - no Current
170 2.576240317442257 -0.774875 -25.0845 3 19 0 0.00 - - no Open
131 2.6803510726405357 -0.711682 -23.8607 3 17 0 0.00 - - no Open
144 2.9957812529215895 -0.72733 -25.9487 4 19 12 0.92 - - no Open
140 3.1434613533924827 -0.737044 -24.0613 2 18 0 0.00 - - no Open
109 3.414601892745689 -0.892323 -31.238 4 20 0 0.00 - - no Open
72 3.7212335604547015 -0.723532 -22.4786 4 18 0 0.00 - - no Open
79 3.810645461348144 -0.888646 -27.5234 3 16 0 0.00 - - no Open
165 4.940385607351782 -0.876029 -29.5071 4 15 0 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 -23.591kcal/mol
Ligand efficiency (LE) -0.6939kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.943
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 474.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.63
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 15.32kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 40.70kcal/mol
Minimised FF energy 25.38kcal/mol

SASA & burial

✓ computed
SASA (unbound) 797.1Ų
Total solvent-accessible surface area of free ligand
BSA total 610.5Ų
Buried surface area upon binding
BSA apolar 533.8Ų
Hydrophobic contacts buried
BSA polar 76.7Ų
Polar contacts buried
Fraction buried 76.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 87.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3127.1Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1512.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)