OCCURRENCE OF d-AMINO ACIDS IN SOME NATURAL MATERIALS
نویسندگان
چکیده
منابع مشابه
Occurrence of D-amino acids in some natural materials.
Although the naturally occurring or-amino acids are usually of the L configuration, examples continue to accumulate of the occurrence in natural products of n-amino acids (1). Certainly the most surprising reports of this type have been those of Kogl and coworkers on the isolation of n-glutamic acid from cancerous tissue. Since his original publication in 1939 (2), and despite the fact that his...
متن کاملTHE OCCURRENCE OF d-AMINO ACIDS IN GRAMICIDIN AND TYROCIDINE
Amino acids having a dextro configuration have been found in natural material from two sources.’ Jacobs and Craig obtained d-proline from ergotinine (4) and later other ergot alkaloids, and IvAnovics and Bruckner found d( -)-glutamic acid as the principal constituent of the P-antigen of Bacillus anthracis and other microorganisms of the related Bacillus mesentericus-subtilis group (5). Inasmuch...
متن کاملNatural occurrence and industrial applications of D-amino acids: an overview.
Interest in D-amino acids has increased in recent decades with the development of new analytical methods highlighting their presence in all kingdoms of life. Their involvement in physiological functions, and the presence of metabolic routes for their synthesis and degradation have been shown. Furthermore, D-amino acids are gaining considerable importance in the pharmaceutical industry. The imme...
متن کاملUtilization of some D-amino acids by lactobacilli.
As one phase of an investigation of the nutritive requirements of lactobacilli, particularly those from the mouth, the utilization of several D-amino acids was studied. The D-forms used were those of amino acids which, as L-forms, are known to be essential for growth. Earlier studies have shown that the L-forms of valine, leucine, isoleucine, arginine, glutamic acid, aspartic acid (under certai...
متن کاملOccurrence of free D-amino acids and aspartate racemases in hyperthermophilic archaea.
The occurrence of free D-amino acids and aspartate racemases in several hyperthermophilic archaea was investigated. Aspartic acid in all the hyperthermophilic archaea was highly racemized. The ratio of D-aspartic acid to total aspartic acid was in the range of 43.0 to 49.1%. The crude extracts of the hyperthermophiles exhibited aspartate racemase activity at 70 degrees C, and aspartate racemase...
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: Journal of Biological Chemistry
سال: 1951
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)56019-1