Apramycin [HRP]

Name: Apramycin [HRP]
SKU: DAG1041
Rating: 5 (1 reviews)

Apramycin, HRP-conjugated, synthetic

COA

SDS

Datasheet

Summary

Product Overview

Apramycin, HRP conjugate

Target

Apramycin

Nature

Synthetic

Tag/Conjugate

HRP

Format

Concentrate

Preservative

None

Storage

2-8°C short term, -20°C long term

Introduction

Aminoglycosides are a family of bactericidal antibiotics that are used in the treatment of specific bacterial infections. They display a concentration dependent killing action and are active against a wide range of aerobic Gram-negative bacilli. Aminoglycosides are molecules that are comprised of an amino group and a sugar group. They operate by inhibiting the bacteria from producing proteins vital to its growth. More specifically, they bind to the bacterial 30S ribosomal subunit where they prevent the translocation of the peptidyl-tRNA from the A-site to the P-site, subsequently giving rise to a misreading of mRNA resulting in the inhibition of protein synthesis. This consequently results in a disruption to the integrity of the bacterial cell membrane. In addition to their use to prevent bacterial infection, aminoglycosides have been used as growth promoters in food producing animals.

Antigen Description

Aminoglycosides are a family of bacterial antibiotics that are used in the treatment of specific bacterial infections. They display a concentration dependent killing action and are active against a wide range of aerobic Gram-negative bacilli. Aminoglycosides are molecules that are comprised of an amino group and a sugar group. They operate by inhibiting the bacteria from producing proteins vital to its growth. More specifically, they bind to the bacterial 30S ribosomal subunit where they prevent the translocation of the peptidyl-tRNA from the A-site to the P-site, subsequently giving rise to a misreading of mRNA resulting in the inhibition of protein synthesis. This consequently results in a disruption to the integrity of the bacterial cell membrane. In addition to their use to prevent bacterial infection, aminoglycosides have been used as growth promoters in food producing animals.

Keywords

Apramycin

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References

Characterization of the Streptomyces lavendulae IMRU 3455 linear plasmid pSLV45

MICROBIOLOGY-SGM

Authors: Hosted, TJ; Wang, T; Horan, AC

Abstract

Streptomyces lavendulae IMRU 3455 contains two large linear plasmids designated pSLV45 (45 kb) and pSLV195 (195 kb). A cosmid, pSPRX604, containing 42 kb from pSLV45 was cloned and sequenced. pSLV45 was tagged with a hygromycin-resistance marker by homologous recombination to generate the derivatives pSLV45.680 and pSLV45.681. An apramycin-resistance marker was introduced into S. lavendulae IMRU 467 using the pSPR910 integration vector to yield the recipient strain SPW910. The self-transmissible nature of pSLV45 was determined by transfer of pSLV45.680 and pSLV45.681 from the donor strains SPW680 and SPW681 into the recipient strain SPW910. Southern analysis indicated the presence of hygromycin- and pSLV45-hybridizing sequences within SPW910 exconjugants. PFGE analysis confirmed pSLV45.680 and pSLV45.681 were transferred intact and formed freely replicating linear plasmids. Sequence analysis of pSPRX604 revealed genes predicted to be involved in plasmid transfer, partitioning and regulation. The transfer of the linear plasmid pSLV45 from S. lavendulae IMRU3455 into S. lavendulae IMRU 467 may allow the development of pSLV45 as an actinomycete-to-actinomycete conjugative shuttle vector.

Next Generation of Tn7-Based Single-Copy Insertion Elements for Use in Multi- and Pan-Drug-Resistant Strains of Acinetobacter baumannii

APPLIED AND ENVIRONMENTAL MICROBIOLOGY

Authors: Ducas-Mowchun, Kaleigh; De Silva, P. Malaka; Crisostomo, Leandro; Fernando, Dinesh M.; Chao, Tzu-Chiao; Pelka, Peter; Schweizer, Herbert P.; Kumar, Ayush

Abstract

The purpose of this study was to create single-copy gene expression systems for use in genomic manipulations of multidrug-resistant (MDR) and extensively drug-resistant (XDR) clinical isolates of Acinetobacter baumannii. In this study, mini-Tn7 vectors with zeocin and apramycin selection markers were created by cloning the We and aac(3)-IV genes, respectively, enabling either inducible gene expression (pUC18T-mini-Tn7T-Zeo-LAC and pUC18T-mini-Tn7T-Apr-LAC) or expression from native or constitutive promoters (pUC18T-mini-Tn7T-Zeo and pUC18T-mini-Tn7T-Apr). The selection markers of these plasmids are contained within a Flp recombinase target (FRT) cassette, which can be used to obtain unmarked mini-Tn7 insertions upon introduction of a source of Flp recombinase. To this end, site-specific excision vectors pFLP2A and pFLP2Z (containing apramycin and zeocin selection markers, respectively) were created in this study as an accessory to the mini-Tn7 vectors described above. Combinations of these novel mini-Tn7 plasmids and their compatible pFLP2Z or pFLP2A accessory plasmid were used to generate unmarked insertions in MDR clinical isolates of A. baumannii. In addition, several fluorescent markers were cloned and inserted into MDR and XDR clinical isolates of A. baumannii via these apramycin and zeocin mini-Tn7 constructs to demonstrate their application. IMPORTANCE Acinetobacter baumannii is a high-priority pathogen for which research on mechanisms of resistance and virulence is a critical need. Commonly used antibiotic selection markers are not suitable for use in MDR and XDR isolates of A. baumannii due to the high antibiotic resistance of these isolates, which poses a barrier to the study of this pathogen. This study demonstrates the practical potential of using apramycin and zeocin mini-Tn7- and Flp recombinase-encoded constructs to carry out genomic manipulations in clinical isolates of A. baumannii displaying MDR and XDR phenotypes.