Draft genome sequences of multi-drug-resistant strains isolated from ulcerative colitis patients.

The whole-genome sequences of four multi-drug-resistant strains, namely, DAK02, DAK03, DAK05, and DAK10, are reported here. The strains were isolated from fecal samples of ulcerative colitis patients from Northern India. The size of the draft genome sequence ranged from 4,809 to 5,000 kb.

Gut colonization with antibiotic-resistant Escherichia coli pathobionts leads to disease severity in ulcerative colitis.

Background: Escherichia coli is a Gram-negative commensal of human gut. Surprisingly, the role of E. coli in the pathogenesis of ulcerative colitis (UC) has not been explored until now.

Draft genome sequence of HAK22 isolated from human feces.

The whole genome sequence of rare human pathogen strain HAK22 is reported. The HAK22 was isolated from healthy human from Gurugram, Haryana, India. The draft genome has a length of 4.

Spatio-temporal dynamics of intra-host variability in SARS-CoV-2 genomes.

During the course of the COVID-19 pandemic, large-scale genome sequencing of SARS-CoV-2 has been useful in tracking its spread and in identifying variants of concern (VOC). Viral and host factors could contribute to variability within a host that can be captured in next-generation sequencing reads as intra-host single nucleotide variations (iSNVs). Analysing 1347 samples collected till June 2020, we recorded 16 410 iSNV sites throughout the SARS-CoV-2 genome.

Genomic characterization and epidemiology of an emerging SARS-CoV-2 variant in Delhi, India.

Delhi, the national capital of India, experienced multiple severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) outbreaks in 2020 and reached population seropositivity of >50% by 2021. During April 2021, the city became overwhelmed by COVID-19 cases and fatalities, as a new variant, B.1.

Integrated genomic view of SARS-CoV-2 in India.

India first detected SARS-CoV-2, causal agent of COVID-19 in late January 2020, imported from Wuhan, China. From March 2020 onwards, the importation of cases from countries in the rest of the world followed by seeding of local transmission triggered further outbreaks in India. We used ARTIC protocol-based tiling amplicon sequencing of SARS-CoV-2 (n=104) from different states of India using a combination of MinION and MinIT sequencing from Oxford Nanopore Technology to understand how introduction and local transmission occurred.

A comprehensive review on microbial l-asparaginase: Bioprocessing, characterization, and industrial applications.

l-Asparaginase (E.C.3.

Molecular modeling and docking of novel laccase from multiple serotype of Yersinia enterocolitica suggests differential and multiple substrate binding.

Multi-copper oxidases (MCOs) are widely distributed in bacteria, where they are responsible for metal homeostasis, acquisition and oxidation. Using specific primers, yacK coding for MCO was amplified from different serotypes of Yersinia enterocolitica biovar 1A. Homology modeling of the protein followed by docking with five well-known substrates for different MCO's (viz.

Strategies used by Yersinia enterocolitica to evade killing by the host: thinking beyond Yops.

Yersinia enterocolitica is an important gastrointestinal pathogen. Its pathogenicity has been attributed primarily to the plasmid encoded Yersinia outer proteins or Yops that are known to subvert the immune system. This review, however, highlights the role of Yop-independent mechanisms that help Y.

Interaction of Yersinia enterocolitica biovar 1A with cultured cells in vitro does not reflect the two previously identified clonal groups.

Yersinia enterocolitica biovar 1A strains have been delineated into two clonal groups (A and B) based on repetitive extragenic palindrome- and enterobacterial repetitive intergenic consensus-PCR genotyping. The present study investigated the interaction of Y. enterocolitica biovar 1A strains with cultured cells in vitro by their ability to adhere, invade and survive within these cells.

Exogenous phage recombinase-independent inactivation of chromosomal genes in Yersinia enterocolitica.

Characterization of newly identified genes is necessary to understand their functions. Phenotypic characterization of isogenic mutants provides good understanding of the functions of the genes in wild type strains. In the present study, we report the use of linear dsDNA as a substrate for homologous recombination in Yersinia enterocolitica.

Detection, distribution and characterization of novel superoxide dismutases from Yersinia enterocolitica Biovar 1A.

Background: Superoxide dismutases (SODs) cause dismutation of superoxide radicals to hydrogen peroxide and oxygen. Besides protecting the cells against oxidative damage by endogenously generated oxygen radicals, SODs play an important role in intraphagocytic survival of pathogenic bacteria. The complete genome sequences of Yersinia enterocolitica strains show presence of three different sod genes.