TY - JOUR
T1 - Chromosomal localization of human genes required for G1 progression in mammalian cells
AU - Greco, Angela
AU - Ittmann, Michael
AU - Barletta, Cosimo
AU - Basilico, Claudio
AU - Croce, Carlo M.
AU - Cannizzaro, Linda A.
AU - Huebner, Kay
N1 - Funding Information:
We are indebted to Dr. Ira Pastan for providing the EGFR clone and to Dr. Giandomenico Russo for the BE1 hybrid and TCRg probe. We thank Ms. Esther Angert for expert technical assistance. This work was supported in part by grants from the National Institutes of Health, CA 39860, CA 25875, CA 10815, CA42568, and a grant from the American Cancer Society, CD 324.
PY - 1989/4
Y1 - 1989/4
N2 - Specific probes derived from the human genes that complement the mutations of two independent temperature-sensitive (ts) mutants of the BHK-21 hamster cell line were used to determine the chromosomal locations of the loci in the human genome. The ts11 gene, which complements a mutation that blocks progression through the G1 phase of the cell cycle and which has now been identified as the structural gene for asparagine synthetase, is a member of a small gene/pseudogene family with four members. In a rodent-human somatic cell hybrid panel, the ts11 genomic locus from which the genomic probe derives segregates with human chromosome region 7cen → 7q35, proximal to the TCRβ locus. In situ hybridization maps this locus more precisely to the q21-31 region of chromosome 7. Two other members of the gene family detected by the ts11 probe segregate concordantly with chromosome region 8pter → 8q24 and chromosome region 21pter → 21q22. Similar experiments using the same rodent-human hybrid panel conducted with a probe identifying the tsBN51 gene, which also encodes a function necessary for G1 progression, mapped this locus to human chromosome 8, proximal to the large amplification unit encompassing the c-myc gene of Colo320 cells. Chromosomal in situ hybridization of the tsBN51 probe confirmed the localization of this gene to chromosome 8, with the most likely location of the gene being 8q21.
AB - Specific probes derived from the human genes that complement the mutations of two independent temperature-sensitive (ts) mutants of the BHK-21 hamster cell line were used to determine the chromosomal locations of the loci in the human genome. The ts11 gene, which complements a mutation that blocks progression through the G1 phase of the cell cycle and which has now been identified as the structural gene for asparagine synthetase, is a member of a small gene/pseudogene family with four members. In a rodent-human somatic cell hybrid panel, the ts11 genomic locus from which the genomic probe derives segregates with human chromosome region 7cen → 7q35, proximal to the TCRβ locus. In situ hybridization maps this locus more precisely to the q21-31 region of chromosome 7. Two other members of the gene family detected by the ts11 probe segregate concordantly with chromosome region 8pter → 8q24 and chromosome region 21pter → 21q22. Similar experiments using the same rodent-human hybrid panel conducted with a probe identifying the tsBN51 gene, which also encodes a function necessary for G1 progression, mapped this locus to human chromosome 8, proximal to the large amplification unit encompassing the c-myc gene of Colo320 cells. Chromosomal in situ hybridization of the tsBN51 probe confirmed the localization of this gene to chromosome 8, with the most likely location of the gene being 8q21.
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U2 - 10.1016/0888-7543(89)90326-1
DO - 10.1016/0888-7543(89)90326-1
M3 - Article
C2 - 2714790
AN - SCOPUS:0024651463
SN - 0888-7543
VL - 4
SP - 240
EP - 245
JO - Genomics
JF - Genomics
IS - 3
ER -