New gene assignments in the rabbit (Oryctolagus cuniculus). Comparison with other species

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Abstract
Nineteen cell hybrids were obtained by fusing rabbit (Oryctolagus cuniculus, OCU) fibroblasts and a Chinese hamster cell line HGPRT-. Eleven enzymatic markers were previously investigated (Soulié and Grouchy 1982); seven of these could be assigned (LDHA, LDHB, TPI, PEPB, NP, ITP, and G6PD). Two assignments were uncertain (MDH2 and GUK). Two markers could not be assigned (MDH1 and PGD). Seven further markers were investigated and are the subject of this report. Six could be assigned: GALT to chromosome OCU1, GAPD to OCU4, GPX and ACY to OCU9, PGM1 to OCU13, and GSR to OCU19. One could not be assigned (GPI). MDH2 and GUK were previously considered uncertain. Now MDH2 was found impossible to assign and GUK was mapped on OCU15. These assignments were compared with those known in man, Cebus capucinus, Microcebus murinus, cat, and mouse. It was imposible to assign any enzymatic marker belonging to the ten linkage groups known in the rabbit. The esterase locus could not be investigated since the rabbit enzyme migrates in the same position as the hamster enzyme.