The dietary-regulated biosynthesis of high-sulphur wool proteins.
1. When the diet of sheep is supplemented by the abomasal infusion of sulphur-containing amino acids or casein, a special group of proteins, with a very high content of sulphur (about 8.3%), is incorporated into the high-sulphur proteins of wool. These special proteins cannot be detected in control wool from the same sheep. 2. This is a naturally occurring process, as these special proteins are found in wool from sheep on a high level of nutrition under ordinary conditions of feeding, and in wool of an inherently high sulphur content. 3. This represents a control mechanism in protein synthesis that has not previously been observed, and may be further evidence that the high-sulphur proteins of wool are produced by an unusual synthetic route.
D000596:Amino Acids; D000818:Animals; D002364:Caseins / Q000378:metabolism; D004032:Diet; D004044:Dietary Proteins / Q000378:metabolism; D004586:Electrophoresis; D007633:Keratins / Q000096:biosynthesis*; D012756:Sheep; D013438:Sulfhydryl Compounds / Q000096:biosynthesis* / Q000378:metabolism; D014935:Wool
D000596:Amino Acids; D002364:Caseins; D004044:Dietary Proteins; D013438:Sulfhydryl Compounds; D007633:Keratins