PHYSICOCHEMICAL CHARACTERISTICS OF GLYCOGEN FROM ANTHONOMUS GRANDIS BOHEMAN

被引:2
作者
BETZ, NL
NETTLES, WC
NOVAK, AF
机构
[1] Baton Rouge, LA 70808
来源
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY | 1968年 / 24卷 / 01期
关键词
D O I
10.1016/0010-406X(68)90965-1
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Glycogen was extracted from the boll weevil, Anthonomus grandis Boheman, with 5% trichloroacetic acid (TCA) and with cold chlorofomr-glycine buffer (cold water extraction). Glucose was the only sugar detected in acid hydrolyzates. The average chain lengths, as determined by methylation, hydrolysis, silanization and gas-liquid chromatography, were 11·0, 11·9 and 11·8 glucose units, respectively, for glycogen extracted with cold water from eggs and larvae and glycogen extracted with TCA from larvae. The high precentage (82) of 2,3,6-trimethylglucopyranose obtained indicated that the principal linkage between glucose units was 1,4. Similar i.r. spectra were obtained from glycogens extracted with TCA and cold water. Boll weevil glycogen complexes with iodine-iodide gave absorption spectra similar to a rabbit liver glycogen standard. The optical rotation of glycogen extracted with TCA from larvae was +200·0°. Measurements of optical rotation could not be made of material extracted with cold water because of high opalescence. © 1968.
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页码:163 / +
页数:1
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