The purpose of this project is to study human gene organization, structure and expression by detailed analyses of selected human tRNA genes. Since the structures of mammalian tRNA genes and their arrangement in mammalian genomes have not been elucidated, the purpose of this research is to thoroughly characterize the structures (nucleotide sequences) of several human tRNA genes (as well as their corresponding mammalian tRNAs) to elucidate their unique features, since the mode of organization and expression of tRNA genes in mammals (especially humans) may differ greatly from those tRNA genes from lower eukaryotes which have been studied (such as Drosophilia and yeast). Representative tRNA genes will be isolated by recombinant DNA techniques, using radioactively labeled mammalian tRNAs to screen human gene libraries harbored in lambda bacteriophages, and their nucleotide sequences determined. The nature and mode of gene expression of the selected human tRNA genes will be investigated by studying the precise precursor/product relationships of the nascent RNA transcripts of these genes by RNA sequence analyses of in vitro transcription products derived from a homologous HeLa cell-free system.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
5R01GM030671-03
Application #
3278486
Study Section
Physiological Chemistry Study Section (PC)
Project Start
1983-03-01
Project End
1986-08-31
Budget Start
1985-03-01
Budget End
1986-08-31
Support Year
3
Fiscal Year
1985
Total Cost
Indirect Cost
Name
University of North Texas
Department
Type
Schools of Arts and Sciences
DUNS #
City
Denton
State
TX
Country
United States
Zip Code
76203
Craig, L C; Pirtle, I L; Gracy, R W et al. (1991) Characterization of the transcription unit and two processed pseudogenes of chimpanzee triosephosphate isomerase (TPI). Gene 99:217-27
Mitchell, A; Bale, A E; Wang-Ge, M et al. (1991) Localization of a DNA segment encompassing four tRNA genes to human chromosome 14q11 and its use as an anchor locus for linkage analysis. Genomics 11:1063-70
Craig, L C; Wang, L P; Lee, M M et al. (1989) A human tRNA gene cluster encoding the major and minor valine tRNAs and a lysine tRNA. DNA 8:457-71
McBride, O W; Pirtle, I L; Pirtle, R M (1989) Localization of three DNA segments encompassing tRNA genes to human chromosomes 1, 5, and 16: proposed mechanism and significance of tRNA gene dispersion. Genomics 5:561-73
Shortridge, R D; Johnson, G D; Craig, L C et al. (1989) A human tRNA gene heterocluster encoding threonine, proline and valine tRNAs. Gene 79:309-24
Pirtle, I L; Shortridge, R D; Pirtle, R M (1986) Nucleotide sequence and transcription of a human glycine tRNAGCC gene and nearby pseudogene. Gene 43:155-67
Shortridge, R D; Pirtle, I L; Pirtle, R M (1986) IBM microcomputer programs that analyze DNA sequences for tRNA genes. Comput Appl Biosci 2:13-7
Chang, Y N; Pirtle, I L; Pirtle, R M (1986) Nucleotide sequence and transcription of a human tRNA gene cluster with four genes. Gene 48:165-74
Johnson, G D; Pirtle, I L; Pirtle, R M (1985) The nucleotide sequence of tyrosine tRNAQ* psi A from bovine liver. Arch Biochem Biophys 236:448-53
Shortridge, R D; Pirtle, I L; Pirtle, R M (1985) Nucleotide sequence and transcription of a gene encoding human tRNAGlyCCC. Gene 33:269-77