Pyruvate2acetate-formate: ((PFL_acetate1 or PFL_acetate2) and Radical_SAM)

Putrescine2spermidine: (minimum(2, [AdoMet_dc, Spermine_synt_N, Spermine_synth]) or (Orn_DAP_Arg_deC and Sacchrp_dh_C))

acetate2butyrate: (not (POR or POR_N or PFOR_II) and minimum(4, [Acyl-CoA_dh_1, Acyl-CoA_dh_2, ECH_2, ETF, ETF_alpha, HCDH_N, Thiolase_N, ketoacyl-synt]) and HCDH and minimum(1, [EC1_2-faecali, ECH1_Enoyl_CoA_DH1, ECH1_Enoyl_CoA_DH2, ECH1_Enoyl_CoA_DH3, ECH1_Enoyl_CoA_DH4, Thiolase_C]))

Others_HGD_unassigned: (minimum(1, [HAAA1, HG2B1, HG2B2, HGD-D, HleuD1, HleuD2, HleuS1, HleuS2, Lactoyl-CoA1, Lactoyl-CoA2]) and minimum(1, [ACP_syn_III, ACP_syn_III_C, AcetylCoA_hyd_C, AcetylCoA_hydro, Acyl-CoA_dh_1, Acyl-CoA_dh_2, AdoHcyase_NAD, AlaDh_PNT_C, BcrAD_BadFG, Biotin_lipoyl, Carboxyl_trans, CoA_trans, CoA_trans_230_acto, CoA_trans_6_Glutaconate, CoA_transf_3, ECH_1, ECH_2, ETF, ETF_alpha, FGGY_C, HCDH, HCDH_N, Hacid_dh, Hacid_dh_C, Mal_decarbox_Al, Peptidase_M22, Peptidase_M23, Thiolase_C, Thiolase_N, ketoacyl-synt]) and not (minimum(2, [AcetylCoA_hyd_C, BcrAD_BadFG, CoA_trans, CoA_trans_230_acto, Mal_decarbox_Al]) and Lactoyl-CoA2 and Lactoyl-CoA1) and not (minimum(4, [ACP_syn_III, ACP_syn_III_C, Acyl-CoA_dh_1, Acyl-CoA_dh_2, AlaDh_PNT_C, BcrAD_BadFG, ECH_1, ECH_2, ETF, ETF_alpha, HCDH, HCDH_N, Hacid_dh, Hacid_dh_C, IlvN, NAD_Gly3P_dh_N, Thiolase_C, Thiolase_N, ketoacyl-synt]) and HAAA1 and not HleuS1))

Putrescine2spermidine: (minimum(2, [AdoMet_dc, Spermine_synt_N, Spermine_synth]) or (Orn_DAP_Arg_deC and Sacchrp_dh_C))