Ultraviolet Spectral Studies of Acid- and Base-denatured Ribonuclease
نویسندگان
چکیده
منابع مشابه
postnatal studies of bats (pipistrellus kuhlii and miniopterus schreibersii) & histomorphology and histochemistry studies of organs and diseases of (neurergus microspilotus and n. kaiseri)
1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...
Rare Earth Nitrate Complexes with an ONO Schiff Base Ligand: Spectral, Thermal, Luminescence and Biological Studies
Five rare earth complexeslanthanum(III),praseodymium(III),neodymium(III), samarium(III) and europium(III) have been synthesized from Schiff base ligand (N,N-bis (2-hydroxy-1-naphthylidene) acetylhydrazone). The complexes were characterized based on elemental analysis, molar conductance, ultraviolet, infrared, mass, thermogravimetric and powder X-ray diffraction studies. Infrared spectra sug...
متن کاملValue of general Acid-base catalysis to ribonuclease a.
Bovine pancreatic ribonuclease A (RNase A; EC 3.1.27.5) has been one of the most studied of all enzymes.’ RNase A efficiently catalyzes the cleavage of RNA.2 Early X-ray diffraction analyses revealed that the active site of RNase A contains two histidine residues, histidine 12 (H12) and histidine 119 (H1 19).3 The results of chemical modification4 and pHrate’ studies are consistent with an enzy...
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The interaction of concanavalin A, the phytohemagglutinin of the jack bean, with a variety of glycosides has been studied by the technique of ultraviolet difference spectroscopy. Whereas methyl a-D-glUC0and manno-pyranoside gave rise to relatively low intensity difference spectra, p-nitrophenyl a-D-mannopyranoside and a-D-glucopyranoside yielded large difference spectra upon interaction with co...
متن کاملThe Acid-, Base-, and Salt-binding Capacity of Salt- Denatured Collagen
Theis and Steinhardt (1) recently have shown that, when native collagen is treated with calcium or magnesium chloride solutions, drastic shrinkage of the collagen occurs at low temperatures. It was further shown that potassium or sodium chloride has exactly the reverse effect; i.e., they actually increase the temperature at which collagen is said to contract. The effect of neutral salts upon th...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1961
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)63289-8