Sequences homologous to the human x- and y-borne zinc finger protein genes (ZFX/Y) are autosomal in monotreme mannals

Journal Article · Mon Feb 01 00:00:00 EST 1993 · Genomics; (United States)

DOI:https://doi.org/10.1006/geno.1993.1063· OSTI ID:6653172

Watson, J M; Frost, C; Graves, M J.A. ^[1]; Spencer, J A ^[2]

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1. Latrobe Univ., Bundoora (Australia)
2. Beckman Inst. of the City of Hope, Duarte, CA (United States)

The human zinc finger protein genes (ZFX/Y) were identified as a result of a systematic search for the testis-determining factor gene on the human Y chromosome. Although they play no direct role in sex determination, they are of particular interest because they are highly conserved among mammals, birds, and amphibians and because, in eutherian mammals at least, they have active alleles on both the X and the Y chromosomes outside the pseudoautosomal region. We used in situ hybridization to localize the homologues of the zinc finger protein gene to chromosome 1 of the Australian echidna and to an equivalent position on chromosomes 1 and 2 of the playtpus. The localization to platypus chromosome 1 was confirmed by Southern analysis of a Chinese hamster [times] platypus cell hybrid retaining most of platypus chromosome 1. This localization is consistent with the cytological homology of chromosome 1 between the two species. The zinc finger protein gene homologues were localized to regions of platypus chromosomes 1 and 2 that included a number of other genes situated near ZFX on the short arm of the human X chromosome. These results support the hypothesis that many of the genes located on the short arm of the human X were originally autosomal and have been translocated to the X chromosome since the eutherian-metatherian divergence. 34 refs., 3 figs., 2 tabs.

• OSTI ID: 6653172
• Journal Information: Genomics; (United States), Vol. 15:2; ISSN 0888-7543
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
HUMAN X CHROMOSOME
GENETIC MAPPING
HUMAN Y CHROMOSOME
X CHROMOSOME
Y CHROMOSOME
AMPHIBIANS
BIOLOGICAL EVOLUTION
BIRDS
CHROMOSOMES
GENES
HYBRIDIZATION
MAMMALS
PROTEINS
SEX
ZINC
ANIMALS
AQUATIC ORGANISMS
ELEMENTS
HETEROCHROMOSOMES
HUMAN CHROMOSOMES
MAPPING
METALS
ORGANIC COMPOUNDS
VERTEBRATES
550400* - Genetics