نتایج جستجو برای: pe_pgrs

تعداد نتایج: 39  

2017
Wanyan Deng Quanxin Long Jie Zeng Ping Li Wenmin Yang Xinchun Chen Jianping Xie

The success of Mycobacterium tuberculosis (M. tuberculosis) as a pathogen is largely contributes to its ability to manipulate the host immune responses. The genome of M. tuberculosis encodes multiple immune-modulatory proteins, including several members of the multi-genic PE_PPE family. Despite of intense research, the roles of PE_PGRS proteins in mycobacterial pathogenesis remain elusive. The ...

2016
Ivana Palucci Serena Camassa Alessandro Cascioferro Michela Sali Saber Anoosheh Antonella Zumbo Mariachiara Minerva Raffaella Iantomasi Flavio De Maio Gabriele Di Sante Francesco Ria Maurizio Sanguinetti Giorgio Palù Michael J. Brennan Riccardo Manganelli Giovanni Delogu

PE_PGRS represent a large family of proteins typical of pathogenic mycobacteria whose members are characterized by an N-terminal PE domain followed by a large Gly-Ala repeat-rich C-terminal domain. Despite the abundance of PE_PGRS-coding genes in the Mycobacterium tuberculosis (Mtb) genome their role and function in the biology and pathogenesis still remains elusive. In this study, we generated...

2007
Nandita Bachhawat Balvinder Singh

The PE_PGRS family of proteins unique to mycobacteria is demonstrated to contain multiple calcium-binding and glycine-rich sequence motifs GGXGXD/NXUX. This sequence repeat constitutes a calcium-binding parallel beta-roll or parallel beta-helix structure and is found in RTX toxins secreted by many Gram-negative bacteria. It is predicted that the highly homologous PE PGRS proteins containing mul...

Journal: :iranian journal of basic medical sciences 0
monu m csir-institute of genomics and integrative biology, council of scientific and industrial research, mall road, delhi-110007 laxman s meena csir-institute of genomics and integrative biology, council of scientific and industrial research, mall road, delhi-110007

objective(s): the periodic binding of protein expressed by mycobacterium tuberculosis h37rv with the host cell receptor molecules i.e. fibronectin (fn) is gaining significance because of its adhesive properties.  the genome sequencing of m. tuberculosis h37rv revealed that the proline-glutamic (pe) proteins contain polymorphic gc-rich repetitive sequences (pgrs) which have clinical importance i...

2012
Christopher R. E. McEvoy Ruben Cloete Borna Müller Anita C. Schürch Paul D. van Helden Sebastien Gagneux Robin M. Warren Nicolaas C. Gey van Pittius

Mycobacterium tuberculosis complex (MTBC) genomes contain 2 large gene families termed pe and ppe. The function of pe/ppe proteins remains enigmatic but studies suggest that they are secreted or cell surface associated and are involved in bacterial virulence. Previous studies have also shown that some pe/ppe genes are polymorphic, a finding that suggests involvement in antigenic variation. Usin...

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