Barstow L E, Young R S, Yakali E, Sharp J J, O'Brien J C, Berman P W, Harbury H A
Proc Natl Acad Sci U S A. 1977 Oct;74(10):4248-50. doi: 10.1073/pnas.74.10.4248.
Horse heart cytochrome c can be split with cyanogen bromide into a heme peptide (residues 1-65) and a nonheme peptide (residues 66-104). In a process involving (i) complex formation between the two fragments and (ii) restoration of the severed peptide linkage, a fully active cytochrome c preparation can be re-formed. Use has been made of this process to couple the heme peptide to peptide 66-104 synthesized by the Merrifield solid-phase procedure. The semisynthetic product formed in this manner is indistinguishable from reconstituted cytochrome c prepared with nonsynthetic peptide 66-104.
马心脏细胞色素c可用溴化氰裂解成一个血红素肽(第1至65位氨基酸残基)和一个非血红素肽(第66至104位氨基酸残基)。在一个涉及(i)两个片段之间形成复合物以及(ii)恢复断裂的肽键的过程中,可以重新形成一个完全活性的细胞色素c制剂。利用这个过程将血红素肽与通过梅里菲尔德固相法合成的66 - 104肽进行偶联。以这种方式形成的半合成产物与用非合成的66 - 104肽重构的细胞色素c无法区分。