A spectrophotometric study of blood group A-specific substance isolated from hog gastric mucosa
- Creators
- Holzman, George
- Niemann, Carl
Abstract
A study of the ultraviolet absorption spectra of preparations of blood group A-specific substance isolated from hog gastric mucin supports the view that group A substance, and probably group O substance, has little specific absorption in this spectral region and that other components account for most if not all of the specific absorption noted in the case of impure preparations. However, ultraviolet spectrophotometric analyses have been found to be particularly useful in following changes in composition brought about by the fractionation of group A substance preparations obtained from hog gastric mucin as well as in comparing preparations isolated by different methods and from different sources. Such analyses have also indicated that tyrosine and tryptophan, if indeed present in group A substance, are but minor constituents.
Additional Information
Copyright © 1948 American Society of Biological Chemists. (Received for publication, January 12, 1948) Gates and Crellin Laboratories of Chemistry, Contribution No. 1171Attached Files
Published - HOLjbc48.pdf
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Additional details
- Eprint ID
- 12597
- Resolver ID
- CaltechAUTHORS:HOLjbc48
- Created
-
2008-12-15Created from EPrint's datestamp field
- Updated
-
2019-10-03Created from EPrint's last_modified field
- Other Numbering System Name
- Gates and Crellin Laboratories of Chemistry
- Other Numbering System Identifier
- 1171