Intrinsic Dissociation Constants of Aspartyl and Glutamyl Carboxyl Groups
نویسندگان
چکیده
منابع مشابه
Intrinsic dissociation constants of aspartyl and glutamyl carboxyl groups.
The synthesis of N-acetyl-L-isoasparagine and of N-acetylL-isoglutamine is reported. The acid dissociation constants of these compounds, and those of their corresponding Ncarbobenzoxy derivatives, have been measured. Since these compounds are uncharged molecules of the type -NH-CH(-CH,COOH)-COor the corresponding glutamyl homologue, their dissociation constants represent the intrinsic dissociat...
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فرض کنیمg یک گروه غیر آبلی متناهی باشد . گراف جابجایی g که با نماد نمایش داده می شود ،گرافی است ساده با مجموعه رئوس که در آن دو راس با یک یال به هم وصل می شوند اگر و تنها اگر . مکمل گراف جابجایی g راگراف نا جابجایی g می نامیم.و با نماد نشان می دهیم. گرافهای جابجایی و ناجابجایی یک گروه متناهی ،اولین بار توسطاردوش1 مطرح گردید ،ولی در سالهای اخیر به طور مفصل در مورد بحث و بررسی قرار گرفتند . در ،م...
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MATHEWS and WALKER [1909] and, in greater detail, Dixon and Tunnicliffe [1923] have demonstrated the great significance of the hydrogen ion activity in relation to the rates of oxidation and of autoxidation of a number of thioacids. To assist the analysis of these results and of certain observations of our own it became desirable to know the dissociation constants of cysteine, thioglycollic aci...
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The acid dissociation constants of the hydroxyl groups in 25, 26, 27, 28-tetrahydroxy-5, 11, 17, 23-tetrasulphonic-calix[4]arene (SC4) were determined at 25οC by a combination of potentiometric and spectrophotometric titration method. The first and second acid dissociation constants (pKa1, pKa2) were found to be 3.19 and 12.1, which demonstrated pKa shift due to intramolecular hydrogen bonding ...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1967
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)99517-7