Rescuing the last-line polymyxins: achievements and challenges

SC Nang, MAK Azad, T Velkov, QT Zhou, J Li… - Pharmacological …, 2021 - Elsevier
Antibiotic resistance is a major global health challenge and, worryingly, several key Gram
negative pathogens can become resistant to most currently available antibiotics. Polymyxins …

Lipid A modification systems in gram-negative bacteria

CRH Raetz, CM Reynolds, MS Trent… - Annu. Rev …, 2007 - annualreviews.org
The lipid A moiety of lipopolysaccharide forms the outer monolayer of the outer membrane of
most gram-negative bacteria. Escherichia coli lipid A is synthesized on the cytoplasmic …

Optimized E. coli expression strain LOBSTR eliminates common contaminants from His‐tag purification

KR Andersen, NC Leksa… - … : Structure, Function, and …, 2013 - Wiley Online Library
His‐tag affinity purification is one of the most commonly used methods to purify recombinant
proteins expressed in E. coli. One drawback of using the His‐tag is the co‐purification of …

The biology of the PmrA/PmrB two-component system: the major regulator of lipopolysaccharide modifications

HD Chen, EA Groisman - Annual review of microbiology, 2013 - annualreviews.org
The ability of gram-negative bacteria to resist killing by antimicrobial agents and to avoid
detection by host immune systems often entails modification to the lipopolysaccharide (LPS) …

Plant nucleotide sugar formation, interconversion, and salvage by sugar recycling

M Bar-Peled, MA O'Neill - Annual review of plant biology, 2011 - annualreviews.org
Nucleotide sugars are the universal sugar donors for the formation of polysaccharides,
glycoproteins, proteoglycans, glycolipids, and glycosylated secondary metabolites. At least …

An undecaprenyl phosphate-aminoarabinose flippase required for polymyxin resistance in Escherichia coli

A Yan, Z Guan, CRH Raetz - Journal of Biological Chemistry, 2007 - ASBMB
Modification of lipid A with the 4-amino-4-deoxy-l-arabinose (l-Ara4N) moiety is required for
resistance to polymyxin and cationic antimicrobial peptides in Escherichia coli and …

Decarboxylation mechanisms in biological system

T Li, L Huo, C Pulley, A Liu - Bioorganic Chemistry, 2012 - Elsevier
This review examines the mechanisms propelling cofactor-independent, organic cofactor-
dependent and metal-dependent decarboxylase chemistry. Decarboxylation, the removal of …

The structural biology of enzymes involved in natural product glycosylation

S Singh, GN Phillips Jr, JS Thorson - Natural Product Reports, 2012 - pubs.rsc.org
Covering: up to 2012 The glycosylation of microbial natural products often dramatically
influences the biological and/or pharmacological activities of the parental metabolite. Over …

Identification of the lipooligosaccharide biosynthetic gene cluster from Mycobacterium marinum

H Ren, LG Dover, ST Islam, DC Alexander… - Molecular …, 2007 - Wiley Online Library
Lipooligosaccharides (LOSs) are antigenic glycolipids that are present in some species of
Mycobacterium including the Canetti strain of M. tuberculosis. The core LOS structures from …

Structure and function of GDP-mannose-3 ', 5 '-epimerase: an enzyme which performs three chemical reactions at the same active site

LL Major, BA Wolucka, JH Naismith - Journal of the American …, 2005 - ACS Publications
GDP-mannose-3 ', 5 '-epimerase (GME) from Arabidopsis thaliana catalyzes the
epimerization of both the 3 'and 5 'positions of GDP-α-d-mannose to yield GDP-β-l …