Results 221 to 230 of about 71,397 (266)
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Ribonuclease. II. Activators and inhibitors for ribonuclease

Archives of Biochemistry and Biophysics, 1953
Abstract Heparin and treburon, a synthetic heparin-like polysaccharide, inhibit pancreatic ribonuclease and ribonuclease activity in rat kidney and liver. Pancreatic desoxyribonuclease is inhibited to a lesser extent. The inhibition appears to be a competitive one between the acid polysaccharide and RNA or DNA.
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Structure of Ribonuclease

Nature, 1967
A 5.5 A electron density map of ribonuclease has been obtained by X-ray diffraction using five isomorphous derivatives. One of the cystine residues is identified by means of a chemically modified protein and, using this residue as a starting point, likely positions are found for the other three. Using 2′-cytidylic acid as an inhibitor the active region
H P, Avey   +7 more
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Penicillin and ribonuclease

Experientia, 1947
L'activite de la ribonuclease vis-a-vis des ribonucleoproteides de la levure est inhibee par la penicilline.
L, MASSART, G, PEETERS, A, VANHOUCKE
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Ribonucleases in Ruminants

Science, 2002
In the recent review by S. A. Benner et al. (“Planetary biology—paleontological, geological, and molecular histories of life,” 3 May, p. [864][1]), Fig. 4 shows an evolutionary tree, which was previously published by the authors ([1][2]) and which was reproduced from a 1986 paper of ours ([2][
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Luminescence of ribonuclease A

Biochimica et Biophysica Acta (BBA) - Protein Structure, 1971
Abstract The effect of disulfide bonds on the phosphorescence properties of tyrosyl residues of model compounds and ribonuclease A was investigated. 1. 1.|The tyrosyl residues of polytyrosine, insulin heptapeptide, lysine-tyrosine copolymer, and cysteinyltyrosine are characterized by luminescence ratios ( q P q F ) which are ...
J E, Churchich, J, Wampler
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Ribonuclease Protection

2002
The ribonuclease protection assay (RPA) is a sensitive technique for the analysis of total cellular RNA. It involves generating a specific antisense riboprobe, hybridizing the probe to total RNA, removing unprotected RNA by RNases, and finally isolating and analyzing the protected RNA on a denaturing gel.
J L, Thorvaldsen, M S, Bartolomei
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Cytotoxicity of Polyspermine-Ribonuclease A and Polyspermine-Dimeric Ribonuclease A

Bioconjugate Chemistry, 2007
Polyspermine-ribonuclease A (PS-RNase A) and polyspermine-dimeric ribonuclease A (PS-dimeric RNase A) were prepared by cross-linking ribonuclease A or its covalently linked dimer to polyspermine (PS) using dimethyl suberimidate. The two RNase A derivatives were tested for a possible antitumor action.
P. POUCKOVA   +9 more
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The microdetermination of ribonuclease

Archives of Biochemistry and Biophysics, 1958
Abstract A solution of ribonucleic acid when mixed at 37 ° with a solution containing serum albumin and gelatin gives a turbidity which may be measured at 400 mμ. The decrease in this turbidity with enzyme action permits the quantitative estimation of 1–50 mμg. of crystalline ribonuclease.
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The eosinophil ribonucleases

Cellular and Molecular Life Sciences (CMLS), 1998
The eosinophil ribonucleases, eosinophilderived neurotoxin (EDN/RNase 2) and eosinophil cationic protein (ECP/RNase 3) are two closely related proteins with intriguing functional and evolutionary properties. While both EDN and ECP maintain the structural and catalytic residues typical of the RNase A superfamily, the role of ribonuclease activity in the
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Protein engineering of ribonucleases

Biochimie, 1998
Natural bovine seminal RNase possesses a potent antitumor action. We have mutagenized monomeric bovine pancreatic RNase A, devoid of any cytotoxic action, to insert residues present at corresponding positions in the subunit of dimeric, antitumor, seminal RNase.
CAFARO, VALERIA   +5 more
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