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首页> 外文期刊>The Journal of Antibiotics: An International Journal >Chemical Synthesis and Characterization of J46 Peptide, an Atypical Class IIa Bacteriocin from Lactococcus lactis subsp. cremoris J46 Strain.
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Chemical Synthesis and Characterization of J46 Peptide, an Atypical Class IIa Bacteriocin from Lactococcus lactis subsp. cremoris J46 Strain.

机译:乳酸乳球菌亚种非典型IIa类细菌素J46肽的化学合成和表征。 cremoris J46株。

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摘要

Bacteriocin J46 is a 27-residue polypeptide produced by Lactococcus lactis subsp. cremoris J46 in fermented milk. The natural form of J46 (nJ46) exhibits a broad antimicrobial spectrum. Herein, we produced the synthetic form of J46 (sJ46) by solid-phase chemical synthesis. The biochemical and physico-chemical properties of sJ46, as well as its antimicrobial activity, were found to be identical to those of its natural counterpart nJ46. It showed a potent antimicrobial activity against both lactic acid bacteria and other Gram-positive microorganisms. (1)H-NMR conformational analysis of sJ46 indicates that it adopts a flexible random coil structure.
机译:细菌素J46是由乳酸乳球菌亚种产生的27个残基的多肽。发酵乳中的creemoris J46。 J46(nJ46)的天然形式具有广泛的抗菌谱。在这里,我们通过固相化学合成制备了J46(sJ46)的合成形式。发现sJ46的生化和物理化学特性及其抗菌活性与天然对等物nJ46相同。它对乳酸菌和其他革兰氏阳性微生物均显示出有效的抗菌活性。 (1)sJ46的1 H-NMR构象分析表明它采用了一种灵活的无规卷曲结构。

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