Studies on the Origin of Amylose and Amylopectin in Starch Granules. I. The Use of Polytoma uvella as a Source of NDPG-Glucosyltransferases and some Properties of the Enzymes

✍ Scribed by D. A. McCracken; Prof. Dr. N. P. Badenhuizen

• Publisher: John Wiley and Sons
• Year: 1970
• Tongue: English
• Weight: 320 KB
• Volume: 22
• Category: Article
• ISSN: 0038-9056
• DOI: 10.1002/star.19700220902

✦ Synopsis

The alga Polytoma uvella was found to be a good source of both soluble and starch-bound NDPG-glucosyltransferase. The properties of the enzymes were similar to those of transferases from other plant sources, but differed in some respects. ADPG and UDPG acted as glucose donors, while maltose was inactive as glucose acceptor. Acetone preparations o f the soluble enzyme were stable, but /?-amylase could not be completely removed without inactivating the transferase. They also contained oligosaccbarides of the maltose series.