Protein S7 from the small subunit of Escherichia coli ribosomes interacts specifically with the 16 S RNA (reviewed in reference [ 1 ] ) and it has been shown that binding occurs near the 3’-end of the 16 S RNA [2-41. Protein S7 can be cross-linked to 16 S RNA by ultraviolet irradiation of the small subunit [5]. From studies in which an in vitro complex between protein S7 and 16 S RNA was irradi...

Aim: The objective of this study was conducted to determine the seroprevalence and S7 gene characterization of bluetongue virus (BTV) of sheep in the West of Iran, during 2007-2008. Materials and Methods: A total 372 sheep blood samples were collected from known seropositive regions in the West of Iran. Anti-BTV antibodies were detected in the serum samples by group specific, C-ELISA. Extractio...

The complete nucleotide sequences of rice black-streaked dwarf virus (RBSDV) genome segments 8 (S8) and 7 (S7) were determined, and were found to have high sequence identities to the corresponding maize rough dwarf virus (MRDV) genome segments. RBSDV S8 and S7 consisted of 1927 and 2193 nucleotides, respectively. RBSDV S8 had a single long open reading frame (ORF) encoding 591 amino acids. RBSD...

We characterize a DNA segment of the Euglena gracills chloroplast DNA fragment Eco-N by nucleotlde sequencing and SI nuclease analysis. We show that this region, which is upstream of the previously sequenced tuf A gene, contains the genes for the ribosomal proteins S12 and S7. The gene arrangment is 5'-rps 12-80 bp spacer-rps 7-174 bp 3pacer-tuf A, somewhat similar to the str operon of E. coll....

The compact genome of Fugu rubripes, with its very small introns, appears to be particularly suitable to study intron-encoded functions. We have analyzed the Fugu gene for ribosomal protein S7 (formerly S8, see Note), whose Xenopus homolog contains in its introns the coding sequences for the small nucleolar RNA U17. Except for intron length, the organization of the Fugu S7 gene is very similar ...

A series of recent molecular systematic studies of the African electric fishes (Mormyroidea) have challenged many aspects of their traditional taxonomy and precladistic hypotheses of their phylogeny. However, poor resolution of some interrelationships within the subfamily Mormyrinae in these studies highlights the need for additional data and analyses. Here we evaluate the phylogenetic informat...

Ribosomal protein S7 from Escherichia coli binds to the lower half of the 3' major domain of 16S rRNA and initiates its folding. It also binds to its own mRNA, the str mRNA, and represses its translation. Using filter binding assays, we show in this study that the same mutations that interfere with S7 binding to 16S rRNA also weaken its affinity for its mRNA. This suggests that the same protein...

Complete sequences of genome segment 7 (S7) from six isolates of epizootic hemorrhagic disease virus serotype 1 (EHDV-1) and 37 isolates of serotype 2 (EHDV-2) were determined. These isolates were made between 1978 and 2001 from the southeast, mid-Atlantic, Midwest and intermountain United States. Analysis of the S7 sequence similarities showed 98.1% identity among the EHDV-1 isolates and 91.0%...

Quantitative reverse transcription PCR (qRT-PCR) has been an integral part of characterizing the immunity of Anopheles mosquitoes towards Plasmodium invasion. Two anti-Plasmodium factors of Anopheles, thioester-containing protein 1 (TEP1) and nitric oxide synthase (NOS), play a role in the refractoriness of Anopheles towards Plasmodium infection and are generally expressed during infection. How...