ID   1.6.2.2
DE   cytochrome-b5 reductase.
CA   2 Fe(III)-[cytochrome b5] + NADH = 2 Fe(II)-[cytochrome b5] + H(+) +
CA   NAD(+).
DR   A7THS1, MCR1A_VANPO;  A7TM72, MCR1B_VANPO;  A6R1T7, MCR1_AJECN ;
DR   A1CRK9, MCR1_ASPCL ;  Q4WJW8, MCR1_ASPFU ;  A2Q898, MCR1_ASPNC ;
DR   Q2UKB8, MCR1_ASPOR ;  Q0CRD8, MCR1_ASPTN ;  A6SI59, MCR1_BOTFB ;
DR   Q59M70, MCR1_CANAL ;  Q6FUX5, MCR1_CANGA ;  Q2HG02, MCR1_CHAGB ;
DR   Q1DXN1, MCR1_COCIM ;  Q6BQ54, MCR1_DEBHA ;  Q5BG98, MCR1_EMENI ;
DR   Q75C62, MCR1_EREGS ;  Q6CS27, MCR1_KLULA ;  A5E5C5, MCR1_LODEL ;
DR   A1D4H0, MCR1_NEOFI ;  Q7SFY2, MCR1_NEUCR ;  Q0U9W5, MCR1_PHANO ;
DR   A5DQE4, MCR1_PICGU ;  A3LT66, MCR1_PICST ;  A4QR21, MCR1_PYRO7 ;
DR   A7EKT5, MCR1_SCLS1 ;  Q4P7Y8, MCR1_USTMA ;  Q6C9G8, MCR1_YARLI ;
DR   A6ZZH2, MCR1_YEAS7 ;  P36060, MCR1_YEAST ;  Q9ZNT1, NB5R1_ARATH;
DR   Q3MHW9, NB5R1_BOVIN;  Q9UHQ9, NB5R1_HUMAN;  Q9DB73, NB5R1_MOUSE;
DR   Q5EB81, NB5R1_RAT  ;  P83291, NB5R2_ARATH;  Q5ZHX7, NB5R2_CHICK;
DR   Q0P487, NB5R2_DANRE;  Q6BCY4, NB5R2_HUMAN;  Q3KNK3, NB5R2_MOUSE;
DR   Q6AY12, NB5R2_RAT  ;  Q5PQA4, NB5R2_XENLA;  Q5BJ68, NB5R2_XENTR;
DR   P07514, NB5R3_BOVIN;  Q0X0E5, NB5R3_CANLF;  P00387, NB5R3_HUMAN;
DR   Q60HG4, NB5R3_MACFA;  Q9DCN2, NB5R3_MOUSE;  P83686, NB5R3_PIG  ;
DR   P20070, NB5R3_RAT  ;  Q32LH7, NB5R4_BOVIN;  Q502I6, NB5R4_DANRE;
DR   Q7L1T6, NB5R4_HUMAN;  Q3TDX8, NB5R4_MOUSE;  Q68EJ0, NB5R4_RAT  ;
DR   Q28CZ9, NB5R4_XENTR;  Q6IPT4, NB5R5_HUMAN;  B1AS42, NB5R5_MOUSE;
DR   A6R2K7, NCB5R_AJECN;  A1C7E9, NCB5R_ASPCL;  Q4X0B5, NCB5R_ASPFU;
DR   A2QCV4, NCB5R_ASPNC;  Q2UFN3, NCB5R_ASPOR;  Q0CY37, NCB5R_ASPTN;
DR   Q59P03, NCB5R_CANAL;  Q6FLT3, NCB5R_CANGA;  Q1DWN4, NCB5R_COCIM;
DR   P0CP15, NCB5R_CRYNB;  P0CP14, NCB5R_CRYNJ;  Q6BUX2, NCB5R_DEBHA;
DR   Q54NC1, NCB5R_DICDI;  Q5AZB4, NCB5R_EMENI;  Q75AL4, NCB5R_EREGS;
DR   Q6CID0, NCB5R_KLULA;  B0CQN7, NCB5R_LACBS;  A5E7U2, NCB5R_LODEL;
DR   Q9UR35, NCB5R_MORAP;  A1DHW1, NCB5R_NEOFI;  Q7RXL1, NCB5R_NEUCR;
DR   Q0UEY4, NCB5R_PHANO;  A5DQ25, NCB5R_PICGU;  A3GF86, NCB5R_PICST;
DR   A4R935, NCB5R_PYRO7;  O74557, NCB5R_SCHPO;  Q4PGW7, NCB5R_USTMA;
DR   A7TNL7, NCB5R_VANPO;  Q6CA86, NCB5R_YARLI;  A6ZVM6, NCB5R_YEAS7;
DR   P38626, NCB5R_YEAST;  Q12746, PGA3_YEAST ;
//