Tuesday, September 20, 2016

Nature Chemical Biology Contents: October 2016, Volume 12 No 10 pp 763 - 885

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TABLE OF CONTENTS

October 2016 Volume 12, Issue 10

Research Highlights
News and Views
Brief Communications
Articles
Corrigendum

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Research Highlights

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Host-microbe interactions: DAO does it | Transcriptional regulation: Stuck in traffic | Proteasomes: Attack of cancer drugs | Phospholipids: How to flip a flippase


News and Views

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Stapled peptides: How to be quick on the uptake   pp764 - 765
Joshua A Kritzer
doi:10.1038/nchembio.2183
Stapled helices are promising compounds for inhibiting intracellular protein-protein interactions, but the discovery of peptides with the key property of cellular uptake has taken place largely through trial and error. A new study defines physicochemical parameters for designing hydrocarbon-stapled helices with a greater likelihood of cellular uptake.

See also: Article by Bird et al.

Transcriptional kinases: Caught by a sticky drug   pp765 - 766
Dalibor Blazek
doi:10.1038/nchembio.2184
A new study reports THZ531 as a covalent CDK12/CDK13 inhibitor affecting transcription. Application of the compound in cells decreases transcription elongation of DNA damage response genes and key super-enhancer-associated transcription factor genes, with important implications for targeted cancer therapy.

See also: Article by Zhang et al.

Single-molecule biophysics: TALEs spin along, but not around   pp766 - 768
Sebastian Becker and Jens Boch
doi:10.1038/nchembio.2182
TALE proteins search for target sequences along a DNA substrate in a uniquely one-dimensional and non-rotating fashion.

See also: Article by Cuculis et al.

Post-translational modifications: Bonds that bind   pp768 - 769
Marcey L Waters
doi:10.1038/nchembio.2186
Scientists find that oxidation of methionine induces favorable interactions with aromatic groups in proteins, contrary to conventional wisdom, providing new molecular insight into the structural and biological impact of methionine oxidation.

See also: Article by Lewis et al.

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Brief Communications

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A hybrid polyketide-nonribosomal peptide in nematodes that promotes larval survival   pp770 - 772
Qingyao Shou, Likui Feng, Yaoling Long, Jungsoo Han, Joshawna K Nunnery et al.
doi:10.1038/nchembio.2144



Nemamides are hybrid polyketide-nonribosomal peptide natural products that were identified by metabolomics profiling in Caenorhabditis elegans and are involved in the organism's survival response to nutrient-deficient conditions.
Chemical compounds

Divergent biosynthesis yields a cytotoxic aminomalonate-containing precolibactin   pp773 - 775
Zhong-Rui Li, Jie Li, Jin-Ping Gu, Jennifer Y H Lai, Brendan M Duggan et al.
doi:10.1038/nchembio.2157



Variations in pathway off-loading and module skipping within a hybrid polyketide synthase-nonribosomal peptide synthetase lead to the production of a collection of precursors to colibactin, a genotoxic compound produced by gut bacteria.
Chemical compounds

Genetic code expansion in the mouse brain   pp776 - 778
Russell J Ernst, Toke P Krogager, Elizabeth S Maywood, Roberto Zanchi, Vaclav Beranek et al.
doi:10.1038/nchembio.2160



Adeno-associated viral delivery of an orthogonal tRNA synthetase-tRNA system enables the encoded incorporation of non-natural amino acids into proteins in neuronal cells, in brain slices and in living mice.
Chemical compounds

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Articles

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Metabolic plasticity underpins innate and acquired resistance to LDHA inhibition   pp779 - 786
Aaron Boudreau, Hans E Purkey, Anna Hitz, Kirk Robarge, David Peterson et al.
doi:10.1038/nchembio.2143



The application of a potent lactate dehydrogenase (LDHA) inhibitor GNE-140 on pancreatic cancer cells revealed that resistance to GNE-140 is attributable to an AMPK-mTOR-S6K-mediated switch in utilization from glycolysis to oxidative phosphorylation.
Chemical compounds

An histidine covalent receptor and butenolide complex mediates strigolactone perception   pp787 - 794
Alexandre de Saint Germain, Guillaume Clave, Marie-Ange Badet-Denisot, Jean-Paul Pillot, David Cornu et al.
doi:10.1038/nchembio.2147



Analysis of the hydrolysis kinetics of strigolactone receptors using enzyme-activated fluorescent probes revealed that the catalytic triad histidine of the receptor forms a covalent interaction with the strigolactone hydrolysis product, the D ring.
Chemical compounds

Inhibiting androgen receptor nuclear entry in castration-resistant prostate cancer   pp795 - 801
Julie A Pollock, Suzanne E Wardell, Alexander A Parent, David B Stagg, Stephanie J Ellison et al.
doi:10.1038/nchembio.2131



A cyclobutane compound competitively inhibits the activity of androgen receptors (AR) containing antiandrogen-resistant mutations through stabilization of the receptor in an apo-like conformation and preventing AR nuclear entry.
Chemical compounds

FRET binding antenna reports spatiotemporal dynamics of GDI-Cdc42 GTPase interactions   pp802 - 809
Louis Hodgson, Desiree Spiering, Mohsen Sabouri-Ghomi, Onur Dagliyan, Celine DerMardirossian et al.
doi:10.1038/nchembio.2145



The modification of Cdc42 with a FRET binding antenna (GDI.Cdc42 FLARE) enables detection of Cdc42 binding to guanine-nucleotide dissociation inhibitor (GDI) and Cdc42 activation with improved spatial-temporal resolution during cellular protrusion and retraction.

Structural basis of laminin binding to the LARGE glycans on dystroglycan   pp810 - 814
David C Briggs, Takako Yoshida-Moriguchi, Tianqing Zheng, David Venzke, Mary E Anderson et al.
doi:10.1038/nchembio.2146



The LARGE glycosyltransferase generates a repeating disaccharide on α-dystroglycan, an extracellular matrix receptor essential for muscle function. A structural study defines a unique binding mode between the LARGE-generated oligosaccharide and the matrix protein laminin.

Cellularly active N-hydroxyurea FEN1 inhibitors block substrate entry to the active site   pp815 - 821
Jack C Exell, Mark J Thompson, L David Finger, Steven J Shaw, Judit Debreczeni et al.
doi:10.1038/nchembio.2148



Structural, enzymatic and cellular target engagement studies reveal the mechanism of action by N-hydroxyurea small molecule inhibitors of the DNA repair enzyme, human flap endonuclease-1 (FEN1) that prevent cleavage of DNA flaps in cancer cells.
Chemical compounds

Discovery of allosteric modulators for GABAA receptors by ligand-directed chemistry   pp822 - 830
Kei Yamaura, Shigeki Kiyonaka, Tomohiro Numata, Ryuji Inoue and Itaru Hamachi
doi:10.1038/nchembio.2150



A biosensor based on the GABAA receptor with a readout consisting of quenching and recovery of biomolecular fluorescence in live cells is used in a screen to identify new interacting ligands for the receptor benzodiazepine site.
Chemical compounds

TALE proteins search DNA using a rotationally decoupled mechanism   pp831 - 837
Luke Cuculis, Zhanar Abil, Huimin Zhao and Charles M Schroeder
doi:10.1038/nchembio.2152



A single-molecule approach demonstrates that TALEs scan DNA using a unique 'zip-line' mechanism wherein the TALEs move without rotating along the DNA helix, yet the DNA remains threaded through the loosely wrapped TALE.

See also: News and Views by Becker & Boch

Discovery of LRE1 as a specific and allosteric inhibitor of soluble adenylyl cyclase   pp838 - 844
Lavoisier Ramos-Espiritu, Silke Kleinboelting, Felipe A Navarrete, Antonio Alvau, Pablo E Visconti et al.
doi:10.1038/nchembio.2151



A high-throughput screen using a mass-spectrometry-based assay results in the identification of LRE1 as an inhibitor of HCO3-/Ca2+-regulated soluble adenylyl cyclase activity. LRE1 interacts with the HCO3- binding site (BBS) to block cAMP formation.
Chemical compounds

Biophysical determinants for cellular uptake of hydrocarbon-stapled peptide helices   pp845 - 852
Gregory H Bird, Emanuele Mazzola, Kwadwo Opoku-Nsiah, Margaret A Lammert, Marina Godes et al.
doi:10.1038/nchembio.2153



Detailed biophysical, microscopy, and statistical analyses of hydrocarbon-stapled peptide variants revealed how a combination of critical parameters such as hydrophobicity, [alpha]-helicity and isoelectric point influence cellular permeability.

See also: News and Views by Kritzer

Fluorogenic probes reveal a role of GLUT4 N-glycosylation in intracellular trafficking   pp853 - 859
Shinya Hirayama, Yuichiro Hori, Zsolt Benedek, Tadashi Suzuki and Kazuya Kikuchi
doi:10.1038/nchembio.2156



Probes based on the photoactive yellow protein tag for monitoring the consequences of glycosylation on GLUT4 traffic reveal that glycosylation is important for plasma membrane retention of the glucose transporter.
Chemical compounds

Oxidation increases the strength of the methionine-aromatic interaction   pp860 - 866
Andrew K Lewis, Katie M Dunleavy, Tiffany L Senkow, Cheng Her, Benjamin T Horn et al.
doi:10.1038/nchembio.2159



A combination of statistical analysis, quantum mechanics calculations and biophysical analytical approaches shows that methionine oxidation increases its interactions with aromatic side chains, interactions that are important for intraprotein and interprotein interactions.

See also: News and Views by Waters

Dual action antifungal small molecule modulates multidrug efflux and TOR signaling   pp867 - 875
Tanvi Shekhar-Guturja, G M Kamal B Gunaherath, E M Kithsiri Wijeratne, Jean-Philippe Lambert, Anna F Averette et al.
doi:10.1038/nchembio.2165



Biochemical and genetic strategies demonstrate that the antifungal natural product beauvericin targets both multidrug efflux and TOR signaling to limit drug resistance and to sensitize resistant pathogens to drug treatment during infection.
Chemical compounds

Covalent targeting of remote cysteine residues to develop CDK12 and CDK13 inhibitors   pp876 - 884
Tinghu Zhang, Nicholas Kwiatkowski, Calla M Olson, Sarah E Dixon-Clarke, Brian J Abraham et al.
doi:10.1038/nchembio.2166



A small molecule inhibits CDK12 and CDK13 activity through covalent modification of Cys residues and reveals a role of the two kinases in regulating Pol II processivity and super-enhancer-driven transcription factor and DNA damage response gene expression.
Chemical compounds
See also: News and Views by Blazek

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Corrigendum

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Corrigendum: Structural biology: HDAC6 finally crystal clear   p885
Yanli Liu, Li Li and Jinrong Min
doi:10.1038/nchembio1016-885

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