Conformational changes in gastric mucoproteins induced by caesium chloride and guanidinium chloride
نویسندگان
چکیده
منابع مشابه
Characterization of gastric mucoproteins isolated by equilibrium density-gradient centrifugation in caesium chloride.
1. The mucoprotein from pig gastric mucus has been purified by equilibrium centrifugation in a CsCl gradient. 2. This procedure removes the non-covalently bound protein, which is closely associated with the mucoprotein and not easily removed from it by gel filtration. 3. The purified mucoprotein is separable by gel filtration into a high-molecular-weight mucoprotein A (mol.wt. 2.3x10(6)) and a ...
متن کاملConformational changes at the active site of creatine kinase at low concentrations of guanidinium chloride.
It has been previously reported that, during denaturation of creatine kinase by guanidinium chloride (GdmCl) or urea [Tsou (1986), Trends Biochem. Sci. 11, 427-429], inactivation occurs before noticeable conformational change can be detected, and it is suggested that the conformation at the active site is more easily perturbed and hence more flexible than the molecule as a whole. In this study,...
متن کاملStructure of proteins unfolded by guanidinium chloride
Small-angle neutron scattering measurements were performed on two very different proteins unfolded by guanidinium chloride. It is shown that the neutron spectra given by unfolded phosphoglycerate kinase and p-casein are similar to those of excluded volume homopolymer chains. INTRODUCTION A functional native protein generally adopts a specific three-dimensional structure that is determined by it...
متن کاملPressure-induced unfolding of lysozyme in aqueous guanidinium chloride solution.
The pressure-induced unfolding of lysozyme was investigated in an aqueous guanidinium chloride solution by means of ultraviolet spectroscopy. Assuming a two-state transition model, volume changes were calculated from the slope of free energy vs. pressure plots over a temperature range of 10 to 60 degrees C. Between 25 and 60 degrees C, almost constant volume changes were observed in the transit...
متن کامل2-(1,3-Benzothiazol-2-yl)guanidinium chloride
The non-H atoms of the cation of the title salt, C(8)H(9)N(4)S(+)·Cl(-), are approximately co-planar (r.m.s. deviation = 0.037 Å), with one amino group forming an intra-molecular hydrogen bond to the tertiary N atom of the benzothia-zole fused-ring system. The cations and anions are linked by cyclic R(2) (1)(6) N-H⋯Cl hydrogen-bonding associations, generating helical chains running along the b-...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1974
ISSN: 0264-6021
DOI: 10.1042/bj1410641