Dialyzable sialic acid of toad oviduct.
1. Small quantities of dialyzable sialic acid in toad oviduct were found. 2. About one-third of the dialyzable sialic acid reacts directly in the thiobarbituric acid procedure, a finding which suggests that the other two-thirds of the dialyzable sialic acid were probably derived from low molecular weight compounds containing sialic acid. 3. When a soluble fraction was chromatographed on Dowex 1-X4 column, three fractions (I, II and III) were isolated. Peak I was a material which shows identical to authentic NANA, colorimetrically as well as chromatographically. Several studies have indicated that both peaks, II and III, could be sialic acid-bound compounds of low molecular weight.
D000818:Animals; D001001:Anura; D002022:Bufo arenarum; D002850:Chromatography, Gel; D003956:Dialysis; D005260:Female; D010057:Oviducts / Q000032:analysis*; D010060:Ovulation; D012794:Sialic Acids / Q000032:analysis*
D012794:Sialic Acids