A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@gmail.com&api_key=61f08fa0b96a73de8c900d749fcb997acc09): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 143

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 143
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 209
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3098
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 574
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 488
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "Count" on bool

Filename: helpers/my_audit_helper.php

Line Number: 3100

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3100
Function: _error_handler

File: /var/www/html/application/controllers/Detail.php
Line: 574
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 488
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

The histone-like protein AlgP regulon is distinct in mucoid and nonmucoid and does not include alginate biosynthesis genes. | LitMetric

AI Article Synopsis

  • The study investigates the role of the histone-like protein AlgP in regulating alginate production in mucoid strains of a bacterial pathogen, which is crucial for understanding chronic lung infections in cystic fibrosis patients.
  • Researchers found that deleting AlgP did not change alginate production or convert mucoid strains to nonmucoid, suggesting that AlgP's influence on alginate gene expression is limited.
  • RNA sequencing revealed a small set of genes regulated by AlgP, with no significant overlap between the mucoid and nonmucoid strains, challenging previous assumptions about AlgP's role in alginate regulation.

Article Abstract

The opportunistic bacterial pathogen causes acute and chronic infections that are notoriously difficult to treat. In people with cystic fibrosis, can cause lifelong lung infections, and isolation of mucoid , resulting from the overproduction of alginate, is associated with chronic infection. The histone-like protein AlgP has previously been implicated in the control of alginate gene expression in mucoid strains, but this regulation is unclear. To explore AlgP in further detail, we deleted in mucoid strains and demonstrated that the deletion of did not result in a nonmucoid phenotype or a decrease in alginate production. We showed that the promoter is expressed by both the nonmucoid strain PAO1 and the isogenic mucoid strain PDO300, suggesting that there may be genes that are differentially regulated between these strains. In support of this, using RNA sequencing, we identified a small AlgP regulon that has no significant overlap between PAO1 and PDO300 and established that alginate genes were not differentially regulated by the deletion of . Of note, we found that deleting in PAO1 increased expression of the nitric oxide operon and the nitrous oxide reductase genes and subsequently promoted growth of PAO1 under anaerobic conditions. Altogether, we have defined a narrow regulon of genes controlled by AlgP and provided evidence that alginate production is not greatly affected by AlgP, countering the long-standing premise in the field.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7654744PMC
http://dx.doi.org/10.1099/mic.0.000923DOI Listing

Publication Analysis

Top Keywords

histone-like protein
8
protein algp
8
algp regulon
8
mucoid strains
8
alginate production
8
genes differentially
8
differentially regulated
8
algp
6
alginate
6
mucoid
5

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!

A PHP Error was encountered

Severity: Notice

Message: fwrite(): Write of 34 bytes failed with errno=28 No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 272

Backtrace:

A PHP Error was encountered

Severity: Warning

Message: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/sessions)

Filename: Unknown

Line Number: 0

Backtrace: