نتایج جستجو برای: s rnase

تعداد نتایج: 718068  

Journal: :The Journal of biological chemistry 1983
D C Eichler S J Eales

The effect of the folded macromolecular structure of RNA on the action of a purified single strand specific nucleolar ribonuclease was studied by comparing the limited hydrolysis of defined RNA substrates. The nucleolar RNase was shown to attack only single-stranded regions of the native 5.8 S rRNA, consistent with a computer-derived model for the secondary structure (Nazar, R. N., Stitz, T. O....

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1979
K H Cook F X Schmid R L Baldwin

In unfolded RNase A there is an interconversion between slow-folding and fast-folding forms (U(S) right harpoon over left harpoon U(F)) that is known to show properties characteristic of proline isomerization in model peptides. Here, we accept the evidence that U(S) molecules contain nonnative proline isomers and we ask about the isomerization of these proline residues during folding. The U(S) ...

Journal: :The Journal of biological chemistry 1976
M Kozak A J Shatkin

The 5'-terminal methylated cap (m7G(5')ppp(5')Gm) in reovirus messenger RNA comprises part of the ribosomes binding site, since attachment of 40 S wheat germ ribosomal subunits to reovirus small (s), medium (m), and large (l) RNA classes conferred almost complete protection of the cap against RNase digestion. After joining of the 60 S ribosomal subunits, however, the cap continued to be protect...

2015
Alejandra Bernardini Fernando Corona Ricardo Dias Maria B. Sánchez Jose L. Martínez

Quinolone resistance is usually due to mutations in the genes encoding bacterial topoisomerases. However, different reports have shown that neither clinical quinolone resistant isolates nor in vitro obtained Stenotrophomonas maltophilia mutants present mutations in such genes. The mechanisms so far described consist on efflux pumps' overexpression. Our objective is to get information on novel mec...

Journal: :The journal of physical chemistry. B 2010
Aaron T Fafarman Steven G Boxer

Three different nitrile-containing amino acids, p-cyanophenylalanine, m-cyanophenylalanine, and S-cyanohomocysteine, have been introduced near the active site of the semisynthetic enzyme ribonuclease S (RNase S) to serve as probes of electrostatic fields. Vibrational Stark spectra, measured directly on the probe-modified proteins, confirm the predominance of the linear Stark tuning rate in desc...

Journal: :Genetics 2001
K Ushijima H Sassa M Tamura M Kusaba R Tao T M Gradziel A M Dandekar H Hirano

Almond has a self-incompatibility system that is controlled by an S locus consisting of the S-RNase gene and an unidentified "pollen S gene." An almond cultivar "Jeffries," a somaclonal mutant of "Nonpareil" (S(c)S(d)), has a dysfunctional S(c) haplotype both in pistil and pollen. Immunoblot and genomic Southern blot analyses detected no S(c) haplotype-specific signal in Jeffries. Southern blot...

Journal: :iranian red crescent medical journal 0
farhad babaei department of virology, school of public health, tehran university of medical sciences, tehran, ir iran; department of microbiology, school of medicine, kermanshah university of medical sciences, kermanshah, ir iran ali ahmadi department of pathology, school of medicine, tehran university of medical sciences, tehran, ir iran farhad rezaei department of virology, school of public health, tehran university of medical sciences, tehran, ir iran somayeh jalilvand department of virology, school of public health, tehran university of medical sciences, tehran, ir iran nastaran ghavami department of virology, school of public health, tehran university of medical sciences, tehran, ir iran mahmoud mahmoudi department of statistics, school of public health, tehran university of medical sciences, tehran, ir iran

results in a total of 40 sporadic prostate cancer and 80 benign prostatic hyperplasia cases, no xmrv was detected by real-time pcr and nested-pcr. rnase l r462q polymorphism analysis reveals that although there was an increase in the risk of prostate cancer correlated with the q/q allele of rnase l at position 462, the frequencies of the rnase l r462q alleles were not statistically significant ...

2012
Masaki Kato Shu Kato Hidenori Sassa

Japanese pear (Pyrus pyrifolia) exhibits gametophytic self-incompatibility (GSI) controlled by a complex and multiallelic S locus. The pistil-part product of the S locus is the polymorphic ribonuclease, S-RNase. Information on S-genotypes is important for the production and breeding of Japanese pears. Molecular analyses of S-genotypes of Japanese pear have been conducted with the CAPS (cleaved ...

2003
RUTH KAPLAN DAVID APIRION

Decay of pre-existing ribonucleic acid was studied in Escherichia coli cells subjected to high temperature or to starvation for nitrogen, phosphate, amino acids, or a carbon source. In these studies, a series of mutants affected in ribonuclease I (RNase I, EC 3.1.4.22) polynucleotide phosphorylase (EC 2.7.7.8) or ribonuclease II (RNase II, EC 3.1.4.23) were used. Degradation of total RNA and th...

2010
JIN-SOO KIM Ronald T. Raines Jin-Soo Kim

PROTEIN ENGINEERING TO EXPLOIT AND EXPLORE -----BOV~~EeR~~~~ELEAS~~~S====~==~~~---Jin-Soo Kim Under the supervision of Dr. Ronald T. Raines at the University of Wisconsin-Madison Ribonuclease 5-peptide (residues 1-20) and 5-protein (residues 21124) are the enzymatically inactive products of the limited digestion of bovine pancreatic ribonuclease A (RNase A) by subtilisin. 5-Peptide binds 5-prot...

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