Abstract:
:A null mutation at the phosphoglucomutase locus (Pgm-1) was discovered by electrophoretic analysis of the inbred mouse strain C57BL/6J. The null allele (Pgm-1n) was shown to segregate as a Mendelian unit alternative to the Pgm-1a and Pgm-1b alleles. Mice expressing the Pgm-1n allele, either in the heterozygous or homozygous state, are viable, healthy, and fertile. The occurrence of the Pgm-1n mutant revealed a previously unreported genetic locus (Pgm-3) that controls the expression of a third phosphoglucomutase. Two electrophoretically expressed alleles of Pgm-3 (inherited without dominance) are found in the inbred mouse strains C57BL/6J and DBA/2J. Linkage observed between the Pgm-3 locus, the dilute locus (d) and the cytoplasmic malic enzyme locus (Mod-1) has allowed assignment of the Pgm-3 locus to chromosome 9. A striking tissue specific expression of Pgm-1 and Pgm-3 was observed. Products of the Pgm-3 locus were detected in kidney, testes, brain, and heart. In contrast, Pgm-1 controlled isozymes were present in kidney, spleen, ovaries, and erythrocytes.
journal_name
Biochem Genetjournal_title
Biochemical geneticsauthors
Johnson FM,Hendren RW,Chasalow F,Barnett LB,Lewis SEdoi
10.1007/BF00484629subject
Has Abstractpub_date
1981-06-01 00:00:00pages
599-615issue
5-6eissn
0006-2928issn
1573-4927journal_volume
19pub_type
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