Table 2 Details of intermolecular interactions in the binding site of orphan human cytochrome P450 4X1

Arachidonic acid

O1 [3.81]- GLN114

C4 [3.87] - TYR112

C8 [3.80]- GLN114

C17 [2.99] - ILE223

C13 [3.35]- GLN114

C14 [3.51] - ILE223

C18 [3.77] - GLN114

C19 [3.80] - ILE223

C4 [3.83] - GLN114

C12 [3.29] - PHE247

O2 [3.49]- ALA126

C15 [3.89] - PHE247

O2 [3.53] - LEU315

C17 [3.40] - LEU315

C6 [3.78] - SER385

C14 [3.27]- LEU315

C10 [3.53] - LEU315

C11[3.43] - LEU315

C20 [3.60]-LEU315

C19 [3.41] - PHE491

C16 [3.69]-PHE491

C6 [3.40] - PHE491

C9 [3.70] - PHE491

C5 [3.70] - PHE491

C2 [3.38] – PHE491

C4 [3.51] – PHE491

Anandamide

C16 [3.25] -TYR112

C16 [3.86] -TYR112

C1 [3.43] -LEU121

C13 [3.51]-GLN114

C8 [3.70] -LEU121

C10 [3.89] -GLN114

C3 [3.89] - LEU121

C9 [3.61]-GLN114

C2 [3.81] -LEU121

C21 [3.24] -GLN114

C4 [3.43] -LEU121

C19 [3.09] -GLN114

C1 [3.78] -ALA126

O1 [3.24]- ALA126

C4 [3.48] -ALA126

O2 [3.36]- PHE491

C18 [3.80] - ILE222

C20 [3.76] - ILE222

C14 [3.73] -ILE223

C11 [3.84] - ILE223

C20 [3.56] - HIS225

C17 [3.66] - HIS225

C10 [3.75] - PHE247

C3 [3.54]- LEU315

C5 [3.83] -ALA316

C7 [3.29] - ALA316

C19 [3.34] -PHE491

C21 [3.48] -PHE491

C14 [3.51] -PHE491

C11 [3.70] - PHE491

C15 [3.85] -PHE491

C22 [3.76] -PHE491