Because of degeneracy of the genetic code, differences in the DNA sequence may not necessarily lead to differences in the amino acid sequence.不同的DNA序列不一定导致氨基酸 Arg Ser Leu 序列的不同 AGA UCA CUU There is strong evidence that proteins with greater Arg Ser Leu than 50%sequence identity usually have quite 2 CGA UCG CUG similar functions (there are exceptions to this rule) 序列与功能的相关性 Ser Ala Arg 3 AGU GCA CGU Chen Feng,Lecture of MicrobiologyChen Feng, Lecture of Microbiology Because of degeneracy of the genetic code, differences in the DNA sequence may not necessarily lead to differences in the amino acid sequence. 不同的DNA序列不一定导致氨基酸 序列的不同 There is strong evidence that proteins with greater than 50% sequence identity usually have quite similar functions (there are exceptions to this rule). 序列与功能的相关性