A LACTOCOCCAL EXPRESSION SYSTEM FOR ENGINEERED NISINS

被引：58

作者：

DODD, HM ^{[1
]}

HORN, N ^{[1
]}

ZHANG, H ^{[1
]}

GASSON, MJ ^{[1
]}

机构：

[1] INST FOOD RES, NORWICH NR4 7UA, NORFOLK, ENGLAND

来源：

APPLIED AND ENVIRONMENTAL MICROBIOLOGY | 1992年 / 58卷 / 11期

关键词：

D O I：

10.1128/AEM.58.11.3683-3693.1992

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The nisin-producing Lactococcus lactis strain FI5876 has been modified and developed for use as an expression system for engineered nisin variants. Insertional inactivation of the resident nisA gene had a polar effect on downstream genes, including those involved in nisin immunity. However, subsequent chromosomal rearrangements in this region involving a newly discovered insertion element (IS905) generated a strain that was deficient in the nisA gene product but expressed those nisin determinants necessary for prenisin maturation, secretion, and immunity. Complementation of the lesion in the nisA gene by plasmid-encoded nisA genes containing site-specific mutations resulted in the exclusive production of altered nisins containing specific amino acid substitutions.

引用

页码：3683 / 3693

页数：11

共 49 条

[31] STABILITY OF INTEGRATED PLASMIDS IN THE CHROMOSOME OF LACTOCOCCUS-LACTIS [J].