鉴定哺乳动物白蛋白中一种可增强B族链球菌色素生成的肽段。
Identification of a peptide from mammal albumins responsible for enhanced pigment production by group B streptococci.
作者信息
Rosa-Fraile M, Sampedro A, Varela J, Garcia-Peña M, Gimenez-Gallego G
机构信息
Microbiology Service, Virgen de las Nieves Hospital, 18014 Granada, Spain.
出版信息
Clin Diagn Lab Immunol. 1999 May;6(3):425-6. doi: 10.1128/CDLI.6.3.425-426.1999.
Abstract
The peptide from peptones responsible for enhanced pigment production by Streptococcus agalactiae in culture media has been isolated from a peptic digest of human albumin and has been identified as Ile-Ala-Arg-Arg-His-Pro-Tyr-Phe. The related heptapeptide lacking the N-terminal Ile also had pigment-enhancing activity. A sequence similarity search showed that these sequences are present only in mammal albumins.
摘要
已从人白蛋白的胃蛋白酶消化物中分离出负责在培养基中增强无乳链球菌色素生成的蛋白胨中的肽，并已鉴定为异亮氨酸-丙氨酸-精氨酸-精氨酸-组氨酸-脯氨酸-酪氨酸-苯丙氨酸。缺少N端异亮氨酸的相关七肽也具有色素增强活性。序列相似性搜索表明，这些序列仅存在于哺乳动物白蛋白中。
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