Abstract:
:Sugar nucleotide-modifying enzymes of the short-chain dehydrogenase/reductase type use transient oxidation-reduction by a tightly bound nicotinamide cofactor as a common strategy of catalysis to promote a diverse set of reactions, including decarboxylation, single- or double-site epimerization, and dehydration. Although the basic mechanistic principles have been worked out decades ago, the finely tuned control of reactivity and selectivity in several of these enzymes remains enigmatic. Recent evidence on uridine 5'-diphosphate (UDP)-glucuronic acid decarboxylases (UDP-xylose synthase, UDP-apiose/UDP-xylose synthase) and UDP-glucuronic acid-4-epimerase suggests that stereo-electronic constraints established at the enzyme's active site control the selectivity, and the timing of the catalytic reaction steps, in the conversion of the common substrate toward different products. The mechanistic idea of stereo-electronic control is extended to epimerases and dehydratases that deprotonate the Cα of the transient keto-hexose intermediate. The human guanosine 5'-diphosphate (GDP)-mannose 4,6-dehydratase was recently shown to use a minimal catalytic machinery, exactly as predicted earlier from theoretical considerations, for the β-elimination of water from the keto-hexose species.
journal_name
Curr Opin Chem Bioljournal_title
Current opinion in chemical biologyauthors
Borg AJE,Beerens K,Pfeiffer M,Desmet T,Nidetzky Bdoi
10.1016/j.cbpa.2020.09.010subject
Has Abstractpub_date
2020-11-06 00:00:00pages
43-52eissn
1367-5931issn
1879-0402pii
S1367-5931(20)30132-0journal_volume
61pub_type
杂志文章,评审abstract::Iron is an essential nutrient for life, and its capacity to cycle between different oxidation states is required for processes spanning oxygen transport and respiration to nucleotide synthesis and epigenetic regulation. However, this same redox ability also makes iron, if not regulated properly, a potentially dangerou...
journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
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abstract::Lipopolysaccharide (LPS), a glycolipid found in the outer membrane of Gram-negative bacteria, is a potent elicitor of innate immune responses in mammals. A typical LPS molecule is composed of three different structural domains: a polysaccharide called the O-antigen, a core oligosaccharide, and Lipid A. Lipid A is the ...
journal_title:Current opinion in chemical biology
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abstract::Metallodrugs are extensively used to treat and diagnose distinct disease types. The unique physical-chemical properties of metal ions offer tantalizing opportunities to tailor effective scaffolds for selectively targeting specific biomolecules. Modern experimental techniques have collected a large body of structural d...
journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
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journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
doi:10.1016/j.cbpa.2003.08.014
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journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
doi:10.1016/j.cbpa.2011.10.004
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journal_title:Current opinion in chemical biology
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doi:10.1016/j.cbpa.2014.12.017
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abstract::Multicomponent reactions (MCRs) provide a powerful tool towards the one-pot synthesis of diverse and complex compounds on the one hand and small and 'drug-like' heterocycles on the other hand. No other single synthesis technology enables chemists to search such large chemical spaces as provided by MCRs. MCRs that invo...
journal_title:Current opinion in chemical biology
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doi:10.1016/s1367-5931(02)00328-9
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pub_type: 杂志文章,评审
doi:10.1016/j.cbpa.2017.09.009
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journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
doi:10.1016/j.cbpa.2003.12.005
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journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
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journal_title:Current opinion in chemical biology
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abstract::The molecular mechanisms by which peptide antibiotics disrupt bacterial DNA synthesis, protein biosynthesis, cell wall biosynthesis, and membrane integrity are diverse, yet historically have been understood to follow a theme of one antibiotic, one inhibitory mechanism. In the past year, mechanistic and structural stud...
journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
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journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
doi:10.1016/s1367-5931(97)80051-8
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abstract::Amide forming reactions are central to the field of peptide and protein synthesis and are considered to be poorly reversible reactions owing to the high stability of peptide bonds. One amide-forming reaction is native chemical ligation (NCL) which is driven by a sulfur to nitrogen acyl migration process from a transie...
journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
doi:10.1016/j.cbpa.2014.09.030
更新日期:2014-10-01 00:00:00
abstract::Rapid progress in genomics and proteomics has provided a wealth of new targets for the pharmaceutical industry, even as many older targets still remain challenging for small-molecule drug discovery. Fragment-based lead discovery, in which leads are built progressively by expanding or combining small fragments, is a ra...
journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
doi:10.1016/j.cbpa.2004.06.010
更新日期:2004-08-01 00:00:00
abstract::Recent advances in -omic profiling technologies have ushered in an era where we no longer want to merely measure the presence or absence of a biomolecule of interest, but instead hope to understand its function and interactions within larger signaling networks. Here, we review several emerging proteomic technologies c...
journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
doi:10.1016/j.cbpa.2020.02.001
更新日期:2020-02-01 00:00:00
abstract::The introduction of fluorine atoms into organic molecules has received considerable attention as these organofluorines have often found widespread applications in bioorganic chemistry, medicinal chemistry and biomaterial science. Despite innovation of synthetic C-F forming methodologies, selective fluorination is stil...
journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
doi:10.1016/j.cbpa.2020.01.004
更新日期:2020-04-01 00:00:00
abstract::Peptide natural products (PNPs) represent a unique class of compounds known for their fascinating structural motifs with important biological activities. Lately, PNPs have garnered a lot of interest for their application in drug discovery. Nevertheless, lack of diversity oriented synthetic/biosynthetic platforms to ge...
journal_title:Current opinion in chemical biology
pub_type: 杂志文章,评审
doi:10.1016/j.cbpa.2016.06.006
更新日期:2016-10-01 00:00:00