The Escherichia coli lac and ara promoters and rrnC ribosomal RNA promoter-leader region were fused to lacZYA. Transcription termination signals were introduced into the lac genes of these fusions by Tn9 and IS1 insertions. Measurement of lac enzymes from upstream and downstream of the insertions showed that termination signals resulting from these insertions are very efficient when transcripti...

An Hfr13 Delta(proA-lac) deletion recipient, -Delta(proA-lac)-F-purE(+)-, has been utilized in a study of the origins of duplications formed during chromosome fragment integration. Among the Pro(-)Lac(+) transductants, some have duplications spanning the F locus. These transductants are, or segregate, strains with F' episomes carrying genes of the duplication. Some of the duplications include p...

Abstract This study compares taxation trends, volatility and tax effort between sub‐Saharan Africa (SSA) Latin American the Caribbean (LAC) countries since 1980. It finds that LAC lead on revenue collection stability, but richer SSA outperform their counterparts. Since 2010, there has been a divergence personal income taxes, which have grown in declined LAC. The panel analysis shows determinant...

China and Latin America the Caribbean (LAC) are now key players in global research production. This study presents a comparative on innovation management decision sciences based data from Scopus Web of Science (WoS) between LAC. Findings showed significant differences regions regarding journals’ citation-dependent measures, number authors journal reputation. Public universities have been leadin...

We have investigated whether DNA polymerase IV (Pol IV; the dinB gene product) contributes to the error rate of chromosomal DNA replication in Escherichia coli. We compared mutation frequencies in mismatch repair-defective strains that were either dinB positive or dinB deficient, using a series of mutational markers, including lac targets in both orientations on the chromosome. Virtually no con...

A bacterial strain is described in which the structural genes of the lac operon have been fused by deletion to the trp operon. It is shown that in this strain lac messenger RNA synthesis is controlled by the t?y regulatory gene. DNA-RNA hybridization studies show that a fraction of the lac messenger RNA is covalently linked to the tr2, messenger RNA. These results demonstrate that at least a fr...

Objectives: To clarify the optimal length of the antral cuff (LAC) in patients after pylorus-preserving gastrectomy (PPG), we investigated relationships between LAC and postgastrectomy disorder (PGD) such as postprandial abdominal fullness (PAF), and between LAC and gastric empting function (GEF) in PPG patients. Background: The main cause of PGD in PPG patients has been considered to be LAC. R...

BACKGROUND Base deficit (BD) is commonly used in the operating room (OR) as an endpoint of resuscitation. BD is used as a surrogate marker for the accumulation of lactic acid(Lac). However, the BD can be affected by large amounts of saline. METHODS We conducted a survey of anesthesiologists regarding the use of BD. We also studied the reliability of BD to determine the presence of hyperlactat...

The gene lac-1, encoding the enzyme laccase, is the best characterized of a number of genes in the chestnut blight fungus, Cryphonectria parasitica, that are repressed by hypoviruses, a group of virulence-attenuating mycoviruses. lac-1 has also been shown to be transcriptionally activated by low concentrations of the translational inhibitor cycloheximide (CHX) and by the immunosuppressant cyclo...

BACKGROUND PHD-finger domain protein 5A (PHF5A) is a highly conserved small transcriptional regulator also involved in pre-mRNA splicing; however, its biological functions and molecular mechanisms in non-small cell lung cancer (NSCLC) have not yet been investigated. The purpose of this study was to determine the functional relevance and therapeutic potential of PHF5A in lung adenocarcinoma (LAC...