COMPARISON OF GLYCOSIDASE ACTIVITIES IN EPIDERMIS, PALATAL EPITHELIUM AND BUCCAL EPITHELIUM

被引：21

作者：

CHANG, F ^{[1
]}

WERTZ, PW ^{[1
]}

SQUIER, CA ^{[1
]}

机构：

[1] UNIV IOWA, DOWS INST DENT RES, IOWA CITY, IA 52242 USA

来源：

COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY | 1991年 / 100卷 / 01期

关键词：

D O I：

10.1016/0305-0491(91)90096-V

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：

1. Beta-glucosidase, alpha-glucosidase, beta-galactosidase and alpha-mannosidase were measured in epidermis, palatal and buccal epithelium of the pig (Sus scrofa). 2. All three epithelia contained similar alpha-mannosidase activity (1.7-3.2 nmol mg tissue-1 hr-1 at pH 4), and none contained significant alpha-glucosidase. 3. Specific activity of beta-glucosidase was high (9-13 nmol mg tissue-1 hr-1 at pH 4) in epidermis and palate, but activity was low (< 2 nmol mg tissue-1 hr-1) in buccal epithelium. 4. Only epidermis contained a high level of beta-galactosidase (5.8 nmol mg tissue-1 hr-1). 5. Differences in glycosidase profiles may underlie differences in permeability barrier properties in these epithelia.

引用

页码：137 / 139

页数：3

共 21 条

[11] MEMBRANE COATING GRANULES - FATE OF DISCHARGED LAMELLAE [J].