Concerning the Biosynthesis of Vitamin B j 2 -

نویسندگان

  • Alan D. Adler
  • C. E. Castro
  • Eleanor Bartnicki
  • Colin Robertson
  • Robert Havlin
  • Harry Davis
چکیده

Reactions of Oxygen with Hemoglobin, Cytochrome C Oxidase and Other Hemeproteins. By W. S. Caughey, C. H. Barlow, J. C. Maxwell, J. A. Volpe, and W. J. Wallace 1 Measurement of Structural and Free Energy Changes in Hemoglobin by Hydrogen Exchange Methods. By S. W. Engländer 10 Leghemoglobin: The Role of Hemoglobin in the Nitrogen-Fixing Legume Root Nodule. By Jonathan B. Wittenberg, C. A. Appleby, F. J. Bergersen, and G. L. Turner 28 Thermodynamic Probes of Ferrimyoglobin Reactions. By George I . H. Hanania and Emile T. Nakhleh 35 Ligand-Binding Reactions and Oxidation-Reduction Equilibria of Cytochrome C. By Abel Schejter, Ir i t Aviram, Rimona Margalit, and Tzipora Goldkorn 51 Oxygen Binding to Human Erythrocyte Cell Populations. By Bruce F. Cameron, Robert Zucker, and Donald R. Harkness 60

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Biosynthesis of Benzimidazole Bases

A hypothesis by B e r n h a u e r on the biosynthesis of the benzimidazole bases of corrinoids implicates the possible existence of a corrinoid containing 6',7'-dimethylnaphtho(2',3') -imidazole4,5 (DMNIA). In order to facilitate the detection of this corrinoid in natural sources by means of a reference compound, DMNIA was synthesized and added to cultures of Propionibacterium shermanii. Thus t...

متن کامل

Protective effect of vitamin E on cypermethrin-induced follicular atresia in rats ovary: Evidence for energy dependent mechanism

It has been shown that chronic exposure to cypermethrin (CPM), a pyrethroid pesticide, results in follicular atresia via pathologically affecting angiogenesis, disrupting endocrine potential and enhancing oxidative stress. This study was aimed to uncover the CPM-exposed energy dependent follicular cells apoptosis and to estimate protective effect of vitamin E (VitE) as a potent antioxidant. Thi...

متن کامل

Thiamin Biosynthesis in Saccharomyces cer-evisiae ORIGIN OF CARBON-2 OF THE THIAZOLE MOIETY By ROBERT L. WHITE and ]AN D. SPENSER

Although the structure of thiamin (vitamin B,) has been known for over 40 years (Williams, 1936; Grewe, 1936) and its chemical synthesis accomplished soon thereafter (Williams & Cline, 1936; Andersag & Westphal, 1937; Todd & Bergel, 1937), the biosynthetic pathway to thiamin (3) has still not been elucidated completely. It is well established that the pyrimidine (1) and thiazole (2) moieties ar...

متن کامل

The role of vitamin B12 in thymine biosynthesis by Lactobacillus leichmannii.

The biochemistry of vitamin Biz has been the subject of several recent reviews (1, 2, 3). Evidence currently available indicates that the vitamin is required for the reduction of formate to methionine and choline methyl. Indirect evidence implicates vitamin Biz in thymine biosynthesis. Thymine will replace the Blz requirements in certain microorganisms (3) and will induce a reticulocyte respons...

متن کامل

The role of vitamin B12 in thymine biosynthesis by chick bone marrow.

Studies with Lactobadlus tichmannii have indicated that vitamin Blz is required for the reduction of formate to the methyl group of thymine (1). Such a function is in agreement with other data implicating the vitamin in methyl group neogenesis and in thymine synthesis (2, 3). The present experiments were designed to study the role of vitamin Bls in thymine biosynthesis by bone marrow. The resul...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011