RNase E and RNase J are needed for S-adenosylmethionine homeostasis in Sinorhizobium meliloti
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چکیده
منابع مشابه
Compatible Pollinations in Solanum chacoense Decrease Both S-RNase and S-RNase mRNA
Gametophytic self-incompatibility (GSI) allows plants to block fertilization by haploid pollen whose S-allele constitution matches one of the two S-alleles in the diploid styles. GSI in Solanum chacoense requires a stylar S-RNase, first secreted from cells of the transmitting tract then imported into incompatible (self) pollen tubes. However, the molecular mechanisms allowing compatible pollen ...
متن کاملDevelopment, antibiotic production, and ribosome assembly in Streptomyces venezuelae are impacted by RNase J and RNase III deletion.
RNA metabolism is a critical but frequently overlooked control element affecting virtually every cellular process in bacteria. RNA processing and degradation is mediated by a suite of ribonucleases having distinct cleavage and substrate specificity. Here, we probe the role of two ribonucleases (RNase III and RNase J) in the emerging model system Streptomyces venezuelae. We show that each enzyme...
متن کاملS-RNase-mediated self-incompatibility.
The Solanaceae, Rosaceae, and Scrophulariaceae families all possess an RNase-mediated self-incompatibility mechanism through which their pistils can recognize and reject self-pollen to prevent inbreeding. The highly polymorphic S-locus controls the self-incompatibility interaction, and the S-locus of the Solanaceae has been shown to be a multi-gene complex in excess of 1.3 Mb. To date, the func...
متن کاملReconstitution of fully active RNase S by carboxypeptidase-degraded RNase S-peptide.
In attempting to relate the covalent structure of ribonuclease to its enzymic activity, controlled proteolytic degradation is a useful approach. Although native ribonuclease is markedly resistant to a variety of proteolytic enzymes, the separated components of ribonuclease S (1, 2), S-peptide, and S-protein, are extensively degraded by carboxypeptidase. Previous studies (3) on the sequence of a...
متن کاملS-RNase complexes and pollen rejection.
Biochemical interactions between the pollen and the pistil allow plants fine control over fertilization. S-RNase-based pollen rejection is among the most widespread and best understood of these interactions. At least three plant families have S-RNase-based self-incompatibility (SI) systems, and S-RNases have also been implicated in interspecific pollen rejection. Although S-RNases determine the...
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ژورنال
عنوان ژورنال: Microbiology
سال: 2017
ISSN: 1350-0872,1465-2080
DOI: 10.1099/mic.0.000442