Cusanovich M A, Meyer T, Tedro S M, Kamen M D
Proc Natl Acad Sci U S A. 1971 Mar;68(3):629-31. doi: 10.1073/pnas.68.3.629.
Reports that histidine may not occur in heme peptides derived from c-type cytochromes isolated from chloroplasts of Euglena gracilis and Porphyra sp. have not been substantiated in the present investigation, in which the amino acid composition and a partial sequence were determined for a heme peptide derived from the c-type cytochromes of a strain of Euglena closely related to that used in the previous studies. It is concluded that no evidence exists to challenge the generalization that histidine is always present vicinal to the hemebinding site in c-type cytochromes.
有报道称，在从纤细裸藻和紫菜叶绿体中分离出的c型细胞色素衍生的血红素肽中可能不存在组氨酸，但本研究并未证实这一报道。在本研究中，测定了一种与先前研究中所用菌株密切相关的裸藻菌株的c型细胞色素衍生的血红素肽的氨基酸组成和部分序列。结论是，没有证据可以质疑这一普遍观点，即组氨酸总是存在于c型细胞色素中血红素结合位点附近。
