SGD Paper 
Lorber B, et al. (1988) Properties of N-terminal truncated yeast aspartyl-tRNA synthetase and structural characteristics of the cleaved domain. Eur J Biochem 174(1):155-61
Abstract: Cytoplasmic aspartyl-tRNA synthetase from Saccharomyces cerevisiae is a dimer made up of identical subunits of Mr 64,000 as shown by biochemical and crystallographic analyses. Previous studies have emphasized the high sensitivity of the amino-terminal region (residues 1-32) to proteolytic enzymes. This work reports the results of limited tryptic or chymotryptic digestion of the purified enzyme which gives rise to a truncated species that has lost the first 50-64 residues with full retention of both the activity and the dimeric structure. In contrast the larger tryptic fragment is distinguished from the whole enzyme by its weaker retention on heparin-substituted agarose gels. The cleaved N-terminal part presents peculiar structural features, such as a high content in lysine residues arranged in a palindromic fashion. The properties of the trypsin-modified enzyme and of the cleaved amino-terminal region are discussed in relation to the known structural characteristics of aspartyl-tRNA synthetase and of other eukaryotic aminoacyl-tRNA synthetases.
| Status: Published | Type: Journal Article | PubMed ID: 3286258 |
Topics addressed in this paper
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| Topics | Genes linked to topics |
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| DPS1 | |
| Cellular Location |  |
| Function/Process | |
| Primary Literature | |
| Protein Physical Properties | |
| Protein Sequence Features | |
| Protein/Nucleic Acid Structure | |
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