FAIRMol

ulfkktlib_3643

Pose ID 7605 Compound 1369 Pose 153

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T12
T. brucei R5P T. brucei
Ligand ulfkktlib_3643
PDB6FXS

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
27.5 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.94, Jaccard 0.83, H-bond role recall 0.50
Burial
89%
Hydrophobic fit
65%
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 (-1.534 kcal/mol/HA) ✓ Good fit quality (FQ -12.83) ✓ Strong H-bond network (11 bonds) ✓ Deep burial (89% SASA buried) ✓ Lipophilic contacts well-matched (65%) ✗ High strain energy (27.5 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (5)
Score
-30.673
kcal/mol
LE
-1.534
kcal/mol/HA
Fit Quality
-12.83
FQ (Leeson)
HAC
20
heavy atoms
MW
305
Da
LogP
-2.11
cLogP
Strain ΔE
27.5 kcal/mol
SASA buried
89%
Lipo contact
65% BSA apolar/total
SASA unbound
465 Ų
Apolar buried
268 Ų

Interaction summary

HB 11 HY 4 PI 2 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 rank3.261Score-30.673
Inter norm-1.468Intra norm-0.066
Top1000noExcludedno
Contacts17H-bonds11
Artifact reasongeometry warning; 5 clashes; 3 protein clashes; moderate strain Δ 27.5
Residues
ARG140 ARG144 ASN106 HIS105 HIS141 TYR97 ARG116 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6FXSContacts16
PoseOpen native poseHB0
IFP residues
ARG140 ARG144 ASN106 HIS105 HIS141 ARG46 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49
Current overlap15Native recall0.94
Jaccard0.83RMSD-
HB strict5Strict recall0.42
HB same residue+role5HB role recall0.50
HB same residue7HB residue recall0.70

Protein summary

302 residues
Protein targetT12Atoms4598
Residues302Chains2
Residue summaryARG:576; ILE:456; VAL:448; GLU:360; ALA:340; LEU:304; TYR:252; HIS:204; PRO:196; THR:196; GLY:182; LYS:176; ASP:168; PHE:160; MET:153; SER:121

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:CSD72

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
213 -0.07830540273871364 -1.59773 -32.4042 16 13 0 0.00 0.00 - no Open
228 1.1298153099012058 -1.64897 -29.6187 10 11 0 0.00 0.00 - no Open
255 3.088123441932323 -1.4505 -26.7354 11 9 0 0.00 0.00 - no Open
153 3.260548858977111 -1.468 -30.6734 11 17 15 0.94 0.50 - no Current
173 4.765747594874439 -1.41151 -23.2273 14 15 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 -30.673kcal/mol
Ligand efficiency (LE) -1.5337kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -12.834
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 20HA

Physicochemical properties

Molecular weight 304.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) -2.11
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 27.47kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 109.88kcal/mol
Minimised FF energy 82.41kcal/mol

SASA & burial

✓ computed
SASA (unbound) 465.1Ų
Total solvent-accessible surface area of free ligand
BSA total 413.6Ų
Buried surface area upon binding
BSA apolar 268.1Ų
Hydrophobic contacts buried
BSA polar 145.6Ų
Polar contacts buried
Fraction buried 88.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 64.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2007.0Ų
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 2454.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 762.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)