STUDIES OF ALPHA-LACTALBUMIN IN LLAMA MILK

被引：4
|
作者：
FERNANDEZ, FM [1 ]
OLIVER, G [1 ]
机构：
[1] UNIV NACL TUCUMAN,FUNDACION MIGUEL LIILO,TUCUMAN,ARGENTINA
来源：
SMALL RUMINANT RESEARCH | 1992年 / 8卷 / 1-2期
关键词：
D O I：
10.1016/0921-4488(92)90011-R
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
Alpha-lactalbumin was isolated and purified from llama (Lama glama L.) lactoserum. It induces the synthesis of lactose by galactosyltranferase, and has a molecular weight of 14 000 daltons according to SDS-PAGE. This alpha-lactalbumin displays antigenic cross reaction with bovine and caprine but not with human alpha-lactalbumin. Chemical characterization showed that it is a metalloprotein carrying one calcium atom per mol. The calcium induces conformational changes revealed in the UV absorption spectrum and in passage through the DEAE-Sephadex column. Studies carried out on 42 samples of 18 animals showed no significant variation in the concentration of alpha-lactalbumin; this was independent of the age of the animal, or the stage of lactation.
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页码：97 / 106
页数：10
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