Amino Acids and Peptides. XXXIII. Synthesis of N-Terminal Epitope Peptides of Mammalian Metallothioneins(MTs).
摘要:
In order to determine the fine structure of the mammalian metallothionein (MT) epitope to a monoclonal anti-rat Zn-MT-II antibody (MT 189-14-7), N-terminal peptides of various lengths of mammalian metallothioneins (MTs) were synthesized by a conventional solution method using the newly developed beta-2-adamantylaspartate, and their immunological properties were examined. It was found that the N-terminal acetyl group was indispensable for the reaction with the monoclonal antibody and the N-terminally acetylated pentapeptide, Ac-Met-Asp-Pro-Asn-Cys-OH, was the smallest peptide which exhibited a significant reactivity with the antibody.
The common N-terminal heptapeptide, Ac-Met-Asp-Pro-Asn-Cys-Ser-Cys-OH, Ac-(MT II 1-7)-OH, of mammalian metallothioneins (MTs) was synthesised by a conventional solution method using newly developed β-2-adamantylasparate. This peptide was as reactive as native MT with a monoclonal antibody produced against rat Zn-MT II.
哺乳动物金属硫蛋白(MTs)的共同N端七肽Ac-Met-Asp-Pro-Asn-Cys-Ser-Cys-OH,即Ac-(MT II 1-7)-OH,通过使用新开发的β-2-金刚烷基天冬氨酸,采用传统的溶液方法合成。该肽与针对大鼠Zn-MT II产生的单克隆抗体同样具有反应性。
Amino Acids and Peptides. XXXIV. Synthesis of Mouse Metallothionein I.(1). Synthesis of Dotriacontapeptide Corresponding to C-Terminal Sequence 30-61 (.ALPHA.-Fragment) of Mouse Metallothionein I and Related Peptides and Examination of Their Heavy Metal-Binding Properties.
The dotriacontapeptide corresponding to the C-terminal sequence of mouse metallothionein (MT) I and related peptides which contain Cys-X-Cys-Cys (X : amino acid residue except for Cys) sequence were synthesized by the conventional solution method employing the HF deprotection method and their heavy metals (Cd2+, Cu2+ and Cu+)-binding properties were examined.
合成了对应于小鼠金属硫蛋白 (MT) I C末端序列的三十二肽及相关肽,这些肽包含Cys-X-Cys-Cys(X:除Cys外的氨基酸残基)序列,采用传统溶液法结合HF去保护法,并对它们与重金属(Cd2+、Cu2+和Cu+)的结合特性进行了研究。
Amino Acids and Peptides. XXXV. Synthesis of Mouse Metallothionein I.(2). Synthesis of a Nonacosapeptide Corresponding to N-Terminal Sequence 1-29(.BETA.-Fragment) of Mouse Metallothionein I and Related Petides and Examination of Their Heavy Metal-Binding Properties.
A nonacosapeptide corresponding to the N-terminalsequence 1-29 (beta-fragment) of mouse metallothionein I and related peptides were synthesized by the conventional solution method and their heavy metals (Cu2+, Cu+ and Cd2+)-binding properties were examined. The Cu(2+)- or Cu(+)-binding activities of various peptides were not greatly dependent on the peptide structure, so far as examined, as in the
Amino acids and peptides. XXIV. Synthesis of Neurospora crassa metallothionein and related cysteine-containing peptides and examination of their heavy metal-binding properties.
corresponding to the entire aminoacid sequence of Neurospora crassa metallothionein and several related cysteine-containing peptides were synthesized by the conventional solution method and their heavy metal-binding properties were examined. The Cu2+- or Cu+-binding properties of the various peptides were similar to each other, whereas the Cd2+-binding properties of these peptides were fairly structure-dependent