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Article

ISL2, a new mobile genetic element in Lactobacillus helveticus.

Molecular & general genetics : MGG - 1 Nov 1994

Zwahlen M C, Mollet B

Abstract excerpt

Spontaneous, phenotypically stable mutations at the beta-galactosidase locus (lacL-lacM) in Lactobacillus helveticus were identified and analyzed. We found that a significant number of mutations were caused by integration of a new IS element, ISL2, into these lac genes. ISL2 is 858 bp long, flanked by 16-bp perfect inverted repeats and generates 3-bp target duplications upon insertion. It contains one open...

Topics

Amino Acid Sequence
Bacterial Proteins
Base Sequence
DNA Transposable Elements
DNA, Bacterial
Genes, Bacterial
Lactobacillus
Molecular Sequence Data
Mutation
beta-Galactosidase

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Source

Identifiers

PMID: 7816043
DOI: 10.1007/BF00290113

Genes

ISL2

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 29 Aug 2026. Prepared record publication-7816043-2026-08-29.1. Manifest publication-graph-cohort-2026-08-29.1.

Source receipt: PubMed via Helena Literature Corpus, retrieved 29 Aug 2026.

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ISL2, a new mobile genetic element in Lactobacillus helveticus.PMID 7816043Read ↗

Genetic diversity in the lactose operons of Lactobacillus helveticus strains and its relationship to the role of these strains as commercial starter cultures.Semantic proximity Read ↗

Characterization of Lactobacillus helveticus strains isolated from cheeses by distribution studies of insertion sequences.Semantic proximity Read ↗

Characterization of two insertion sequences, IS701 and IS702, from the cyanobacterium Calothrix species PCC 7601.Semantic proximity Read ↗

Transposition in Lactobacillus sakei: inactivation of a second lactocin S operon by the insertion of IS1520, a new member of the IS3 family of insertion sequences.Semantic proximity Read ↗

Insertion-sequence-mediated mutations isolated during adaptation to growth and starvation in Lactococcus lactis.Semantic proximity Read ↗

Characterization of ISBth4, a functional new IS231 variant from Bacillus thuringiensis MEX312.Semantic proximity Read ↗

An insertion element of the extremely thermophilic archaeon Sulfolobus solfataricus transposes into the endogenous beta-galactosidase gene.Semantic proximity Read ↗

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IS30 elements are mediators of genetic diversity in Oenococcus oeni.Semantic proximity Read ↗

Characterization of insertion sequence IS892 and related elements from the cyanobacterium Anabaena sp. strain PCC 7120.Semantic proximity Read ↗

Galactose utilization in Lactobacillus helveticus: isolation and characterization of the galactokinase (galK) and galactose-1-phosphate uridyl transferase (galT) genes.Semantic proximity Read ↗

Characterization of insertions of IS476 and two newly identified insertion sequences, IS1478 and IS1479, in Xanthomonas campestris pv. campestris.Semantic proximity Read ↗

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