Abstract：
:Methanogenesis from trimethylamine, dimethylamine or monomethylamine is initiated by a series of corrinoid-dependent methyltransferases. The non-homologous genes encoding the full-length methyltransferases each possess an in-frame UAG (amber) codon that does not terminate translation. The amber codon is decoded by a dedicated tRNA, and corresponds to the novel amino acid pyrrolysine in one of the methyltransferases, indicating pyrrolysine to be the 22nd genetically encoded amino acid. Pyrrolysine has the structure of lysine with the (epsilon)N in amide linkage with a pyrroline ring. The reactivity of the electrophilic imine bond is the basis for the proposed function of pyrrolysine in activating and optimally orienting methylamine for methyl transfer to the cobalt ion of a cognate corrinoid protein. This reaction is essential for methane formation from methylamines, and may underlie the retention of pyrrolysine in the genetic code of methanogens.
journal_name
Curr Opin Chem Bioljournal_title
Current opinion in chemical biologyauthors
Krzycki JAdoi
10.1016/j.cbpa.2004.08.012subject
Has Abstractpub_date
2004-10-01 00:00:00pages
484-91issue
5eissn
1367-5931issn
1879-0402pii
S1367-5931(04)00110-3journal_volume
8pub_type
杂志文章,评审abstract：:Nanoparticle-based therapeutics have received increasing attention, as these systems can alleviate many drawbacks of conventional therapy. Metal-organic frameworks (MOFs), a new class of hybrid materials composed of metal ions and organic bridging ligands, have emerged as a promising platform for drug delivery, owing ...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2009.12.012
更新日期：2010-04-01 00:00:00
abstract：:DNA binding and transcriptional activation by basic region leucine zipper (bZIP) proteins can be enhanced by accessory factors. In the past year, three accessory factor-bZIP-DNA complexes have been investigated extensively. Experiments have probed the effect of accessory factors on bZIP-DNA specificity, the residues t...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/s1367-5931(98)80031-8
更新日期：1998-02-01 00:00:00
abstract：:A wide range of experiments have emerged recently regarding charge transport through DNA, including spectroscopic studies of rates of DNA-mediated electron transfer and biochemical studies of DNA base oxidation over long distances. These experiments have, in turn, led to new proposals about the way in which charge mov...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/s1367-5931(99)00075-7
更新日期：2000-04-01 00:00:00
abstract：:To date, the vast majority of the proteomic data sets collected by mass spectrometry (MS) have been generated by nondirected methods, whereby the identified precursor ions are stochastically selected for sequencing from complex sample mixtures. Recently, new MS approaches have been developed in which the mass spectrom...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2009.08.016
更新日期：2009-12-01 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：:Protein cysteine residues are central to redox signaling and to protection against oxidative damage through their interactions with reactive oxygen and nitrogen species, and electrophiles. Although there is considerable evidence for a functional role for cysteine modifications, the identity and physiological significa...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2010.11.003
更新日期：2011-02-01 00:00:00
abstract：:Exacerbation of climate change and air pollution around the world have emphasized the necessity of replacing fossil fuels with clean and sustainable energy. Metabolic engineering has provided strategies to engineer diverse organisms for the production of biofuels from renewable carbon sources. Although some of the pro...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2020.02.009
更新日期：2020-12-01 00:00:00
abstract：:Aside from the demonstration that individual molecular traits of enzymes can be evolutionarily optimised, the discovery that several traits can be simultaneously optimised is a major advance. The first observations of the effects of evolutionary optimisation at the structural level, through X-ray crystallography, rein...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/s1367-5931(00)00087-9
更新日期：2000-06-01 00:00:00
abstract：:Monitoring the conformational dynamics of proteins is crucial for a better understanding of their biological functions. To observe the structural dynamics of proteins, it is often necessary to study each molecule individually. To this end, single-molecule techniques have been developed such as Förster resonance energy...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2019.05.003
更新日期：2019-08-01 00:00:00
abstract：:Mass spectrometry has become a choice method for broad-spectrum metabolite analysis in both fundamental and applied research. This can range from comprehensive analysis achieved through time-consuming chromatography to the rapid analysis of a few target metabolites without chromatography. In this review article, we hi...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2015.10.012
更新日期：2016-02-01 00:00:00
abstract：:The range and diversity of solid-phase synthetic methodology continues to develop very rapidly, allowing the generation of previously inaccessible compound libraries. The design of such libraries requires consideration of linkage strategies, newly developed solid-phase reactions and emerging solution-phase processes. ...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/S1367-5931(99)80046-5
更新日期：1999-06-01 00:00:00
abstract：:Majority of eukaryotic proteins are glycosylated and their glycan moieties have numerous important structural, functional and regulatory roles. Because of structural complexity of glycans and technological limitations glycomics, and particularly glycoproteomics was not able to follow rapid progress in genomics and pro...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2012.12.007
更新日期：2013-02-01 00:00:00
abstract：:Genetically Encoded Voltage Indicators (GEVIs) are powerful tools used to investigate neural activity in the brain. The spatiotemporal resolution of GEVIs is on a subcellular and millisecond scale, and is superior to that of the functional magnetic resonance imaging (fMRI) and electroencephalogram (EEG). Further, whil...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2016.05.023
更新日期：2016-08-01 00:00:00
abstract：:The cytochrome bc(1) complex is a key mitochondrial enzyme that catalyses transfer of electrons maintaining the membrane potential of mitochondria. Currently, atovaquone is the only drug in clinical use targeting the Plasmodium falciparum bc(1) complex. The rapid emergence of resistance to atovaquone resulted in a cos...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2010.05.005
更新日期：2010-08-01 00:00:00
abstract：:The biochemical activities involved in signal transduction in cells are under tight spatiotemporal regulation. To study the effects of the spatial patterning and temporal dynamics of biochemical activities on downstream signaling, researchers require methods to manipulate signaling pathways acutely and rapidly. In thi...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2016.08.012
更新日期：2016-10-01 00:00:00
abstract：:Nucleic acids such as DNA are increasingly being applied in nanotechnology, as a result of their capability to self-assemble reversibly. The formal replacement of canonical base pairs by metal-mediated ones enables a site-specific introduction of metal-based functionality into these biomolecules, leading to the format...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2017.01.019
更新日期：2017-04-01 00:00:00
abstract：:Efficient library design is an ongoing challenge for investigators seeking novel ligands for proteins, whether for drug discovery or chemical biology. Strategies that add neglected chemistry or exclude unproductive compounds are two dominant recent themes, as is a growing awareness of molecular complexity and its impl...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2006.06.003
更新日期：2006-08-01 00:00:00
abstract：:The active site of cross-linked enzyme crystals can be further modified by chemical means, yielding a new type of chemically engineered enzyme. In the past year, the characteristics of cross-linked protein crystals as microporous materials have been studied and used as stationary phases in chromatographic separations....
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/s1367-5931(99)80007-6
更新日期：1999-02-01 00:00:00
abstract：:In recent years, an increasing number of proteins have been discovered which utilize heme cofactors to sense oxygen, carbon monoxide and nitric oxide. The identification and characterization of these proteins are revising our understanding of heme-mediated allostery first established in the early 1960s. Biochemical an...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/s1367-5931(00)00193-9
更新日期：2001-04-01 00:00:00
abstract：:Lipids are a vital class of molecules that play important and varied roles in biological processes, however, fully understanding these roles is extremely difficult due to the immense number and diversity of possible lipid species. While recent advances in chromatography and high resolution mass spectrometry have great...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2017.11.009
更新日期：2018-02-01 00:00:00
abstract：:Chromatin, the nucleoprotein complex organizing the genome, is central in regulating gene expression and genome organization. Chromatin conformational dynamics, controlled by histone post-translational modifications (PTM) and effector proteins, play a key role in this regulatory function. Recent developments in chemic...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2019.01.022
更新日期：2019-08-01 00:00:00
abstract：:The atomic force microscope (AFM) allows biomolecules to be observed and manipulated under native conditions. It operates in buffer solution, produces molecular images with outstanding signal-to-noise ratio, and addresses single molecules. Progress in sample preparation and instrumentation has led to topographs that r...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2003.08.010
更新日期：2003-10-01 00:00:00
abstract：:The reactive oxygen and nitrogen species superoxide ion, nitric oxide, nitrogen dioxide and peroxynitrite ion all react with biological target molecules. Some of these interactions are carefully orchestrated segments of signal transduction cascades or part of the armamentarium of the immune system, others are patholog...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/S1367-5931(99)80036-2
更新日期：1999-04-01 00:00:00
abstract：:Although biotin and lipoic acid are two universally conserved cofactors essential for intermediary metabolism, their synthetic pathways have become known only in recent years. Both pathways have unusual features. Biotin synthesis in Escherichia coli requires a methylation that is later removed whereas lipoic acid is a...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2018.08.004
更新日期：2018-12-01 00:00:00
abstract：:Manganese, iron, copper, and zinc are observed to play essential roles in mitochondria. The overload and depletion of metal ions in mitochondria under pathological conditions, however, could disturb mitochondrial compartments and functions leading to cell death. In this review, we mainly summarize how impaired metal i...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2017.09.009
更新日期：2018-04-01 00:00:00
abstract：:There is tremendous interest in developing and refining methods to predictably perform chemical reactions within the framework of living systems. Here we review recent advances in applying tetrazine cycloadditions to live cell and in vivo chemistry. We highlight new syntheses of the tetrazine and dienophile precursors...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2013.08.004
更新日期：2013-10-01 00:00:00
abstract：:Oligosaccharide recognition is a major means of bacterial-host cell attachment. Bacterial-host receptor binding can subvert host signaling pathways to cause pathology. In addition, pathogenic bacteria can utilize more than one recognition system to bind host cells. Recent studies of Helicobacter pylori illustrate both...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/s1367-5931(98)80105-1
更新日期：1998-12-01 00:00:00
abstract：:In recent years pharmaceutical companies have utilized structure-based drug design and combinatorial library design techniques to speed up their drug discovery efforts. Both approaches are routinely used in the lead discovery and lead optimization stages of the drug discovery process. Fragment-based drug design, a new...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2008.02.007
更新日期：2008-06-01 00:00:00
abstract：:Natural evolution has produced a great diversity of proteins that can be harnessed for numerous applications in biotechnology and pharmaceutical science. Commonly, specific applications require proteins to be tailored by protein engineering. Directed evolution is a type of protein engineering that yields proteins with...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/j.cbpa.2014.09.013
更新日期：2014-10-01 00:00:00
abstract：:Oligonucleotide in vitro selection provides surprisingly specific aptamers to protein targets. Synthetic chemistries for modifying nucleotides have been developed to enhance aptamer binding affinity. The diversity of nucleosides amenable to either triphosphate synthesis or phosphoramidite activation is now sufficientl...
journal_title：Current opinion in chemical biology
pub_type： 杂志文章,评审
doi：10.1016/s1367-5931(97)80103-2
更新日期：1997-06-01 00:00:00
