Tuesday, October 18, 2016

Nature Chemical Biology Contents: November 2016, Volume 12 No 11 pp 887 - 987

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TABLE OF CONTENTS

November 2016 Volume 12, Issue 11

Obituary
Research Highlights
News and Views
Brief Communications
Articles

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Obituary

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Roger Y. Tsien 1952-2016   p887
Amy E Palmer and Jin Zhang
doi:10.1038/nchembio.2213
Roger Tsien left us on August 24. His untimely passing has saddened and shocked the scientific community. Roger literally and figuratively brightened our world, illuminated the dark matter of biology, and forever changed our view of the interface of chemistry and biology.

Research Highlights

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Proteomics: Fishing for zinc | Insulin signaling: At a snail's pace | Synthetic biology: Cholera detectors | Long non-coding RNAs: Pulsating RNA motifs


News and Views

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Protein dynamics: Conformational footprints   pp890 - 891
Buyong Ma and Ruth Nussinov
doi:10.1038/nchembio.2212
The mechanisms by which proteins evolve new functions can be slow and mysterious. Comprehensive structural analysis of enzyme variants reveal how gradual enrichments of pre-existing populations with the right productive dynamics for new functions can accomplish this aim.

See also: Article by Campbell et al.

Antibiotics: New recipe for targeting resistance   pp891 - 892
Balazs Papp and Viktoria Lazar
doi:10.1038/nchembio.2215
The rapid spread of antibiotic-resistant bacteria demands novel treatment approaches that delay or even reverse the evolution of resistance. A new screening strategy identifies two compounds that select against a common tetracycline-resistance gene in Escherichia coli.

See also: Brief Communication by Stone et al.

Enzyme mechanisms: Sugary shears   pp892 - 893
Ethan D Goddard-Borger
doi:10.1038/nchembio.2216
Proteolytic maturation of an important transcriptional regulator is performed by a glycosyltransferase. The reaction involves glycosylation of a glutamate residue and conversion of the [gamma]-glycosyl ester product into an N-acyl pyroglutamate, which undergoes spontaneous hydrolysis to effect peptide backbone fission.

See also: Brief Communication by Janetzko et al.

Metabolic engineering: Biosensors get the green light   pp894 - 895
Sarah K Hammer and Jose L Avalos
doi:10.1038/nchembio.2214
A novel approach recruits the largest prokaryotic family of ligand-induced transcriptional regulators to develop a new class of biosensors in yeast based on transcriptional activation, vastly expanding the repertoire of biosensors that could function in eukaryotic hosts.

See also: Article by Skjoedt et al.

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Brief Communications

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Small-molecule WNK inhibition regulates cardiovascular and renal function   pp896 - 898
Ken Yamada, Hyi-Man Park, Dean F Rigel, Keith DiPetrillo, Erin J Whalen et al.
doi:10.1038/nchembio.2168



A selective inhibitor of the With-No-Lysine (K) (WNK) kinase family reduces blood pressure and increases electrolyte excretion in hypertensive rats.
Chemical compounds

How the glycosyltransferase OGT catalyzes amide bond cleavage   pp899 - 901
John Janetzko, Sunia A Trauger, Michael B Lazarus and Suzanne Walker
doi:10.1038/nchembio.2173



The glycosyltransferase OGT cleaves a substrate, HCF-1, via a glutamyl-sugar intermediate, defining a reaction mechanism that requires UDP-GlcNAc and involves the formation of an internal pyroglutamate that undergoes spontaneous backbone hydrolysis.

See also: News and Views by Goddard-Borger

Compounds that select against the tetracycline-resistance efflux pump   pp902 - 904
Laura K Stone, Michael Baym, Tami D Lieberman, Remy Chait, Jon Clardy et al.
doi:10.1038/nchembio.2176



A high-throughput screen against the E. coli tetracycline-resistance efflux pump TetA identifies two 'selection-inverting' compounds that swap tetracycline resistance for resistance to another antibiotic, paving the way for two-phase antibiotic treatment protocols.

See also: News and Views by Papp & Lazar

Carbon extension in peptidylnucleoside biosynthesis by radical SAM enzymes   pp905 - 907
Edward A Lilla and Kenichi Yokoyama
doi:10.1038/nchembio.2187



Nikkomycins and polyoxins are peptidylnucleosides with antifungal activity. The biosynthetic routes to these natural products share a bicyclic intermediate formed by a carbon radical-centered ring closure catalyzed by the radical SAM enzymes NikJ or PolH.
Chemical compounds

Thermal profiling reveals phenylalanine hydroxylase as an off-target of panobinostat   pp908 - 910
Isabelle Becher, Thilo Werner, Carola Doce, Esther A Zaal, Ina Togel et al.
doi:10.1038/nchembio.2185



A chemoproteomics approach utilizing the thermal shift assay and quantitative MS resulted in the identification of phenylalanine hydroxylase as an off-target of the histone deacetylase inhibitor panobinostat.
Chemical compounds

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Articles

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YidC assists the stepwise and stochastic folding of membrane proteins   pp911 - 917
Tetiana Serdiuk, Dhandayuthapani Balasubramaniam, Junichi Sugihara, Stefania A Mari, H Ronald Kaback et al.
doi:10.1038/nchembio.2169



An AFM-based single-molecule approach shows how the chaperone and insertase YidC stabilizes E. coli LacY in the unfolded state and assists LacY to insert and fold transmembrane structural segments in random order until folding of the native state is complete.

Simultaneous analysis of enzyme structure and activity by kinetic capillary electrophoresis-MS   pp918 - 922
Gleb G Mironov, Christopher M Clouthier, Abdullah Akbar, Jeffrey W Keillor and Maxim V Berezovski
doi:10.1038/nchembio.2170



Combining the kinetic separation capability of capillary electrophoresis with the structural elucidation capacity of ion-mobility mass spectrometry, a coupled CE-UV-IM-MS system demonstrates utility in examining transglutaminase conformers and their enzymatic activity.
Chemical compounds

Overcoming resistance to HER2 inhibitors through state-specific kinase binding   pp923 - 930
Chris J Novotny, Sirkku Pollari, Jin H Park, Mark A Lemmon, Weijun Shen et al.
doi:10.1038/nchembio.2171



High-throughput screening identified a small-molecule compound that targets the active conformation of HER2 and is effective against growth-factor-mediated drug resistance.
Chemical compounds

Inhibition of Mcl-1 through covalent modification of a noncatalytic lysine side chain   pp931 - 936
Gizem Akcay, Matthew A Belmonte, Brian Aquila, Claudio Chuaqui, Alexander W Hird et al.
doi:10.1038/nchembio.2174



The use of an aryl boronic acid carbonyl warhead to target a noncatalytic lysine side chain enables the development of covalent inhibitors against the anti-apoptotic protein myeloid cell leukemia 1 (Mcl-1).
Chemical compounds

Lactate metabolism is associated with mammalian mitochondria   pp937 - 943
Ying-Jr Chen, Nathaniel G Mahieu, Xiaojing Huang, Manmilan Singh, Peter A Crawford et al.
doi:10.1038/nchembio.2172



The application of high-resolution metabolomics integrated with isotope labeling revealed that lactate is imported into the mitochondria and is metabolized by mitochondrial LDH into pyruvate.

The role of protein dynamics in the evolution of new enzyme function   pp944 - 950
Eleanor Campbell, Miriam Kaltenbach, Galen J Correy, Paul D Carr, Benjamin T Porebski et al.
doi:10.1038/nchembio.2175



Analysis of the structures and dynamics of intermediates and engineered mutants from directed protein evolution experiments reveals how dynamic conformational changes are harnessed across evolutionary trajectories to generate new catalytic functions.

See also: News and Views by Ma & Nussinov

Engineering prokaryotic transcriptional activators as metabolite biosensors in yeast   pp951 - 958
Mette L Skjoedt, Tim Snoek, Kanchana R Kildegaard, Dushica Arsovska, Michael Eichenberger et al.
doi:10.1038/nchembio.2177



Transplantation of the prokaryotic LysR-type transcriptional regulator into yeast combined with in vivo screening identifies yeast mutants that produce metabolic products with bacterial small molecule inducers.

See also: News and Views by Hammer & Avalos

Ultra-deep tyrosine phosphoproteomics enabled by a phosphotyrosine superbinder   pp959 - 966
Yangyang Bian, Lei Li, Mingming Dong, Xuguang Liu, Tomonori Kaneko et al.
doi:10.1038/nchembio.2178



A SH2-domain-derived superbinder that exhibits strong affinity for phosphotyrosine (pTyr) was used in conjugation with mass spectroscopy approaches to enrich and enable identification of pTyr sites in different cancer cell lines.

Amino-group carrier-protein-mediated secondary metabolite biosynthesis in Streptomyces   pp967 - 972
Fumihito Hasebe, Kenichi Matsuda, Taro Shiraishi, Yushi Futamura, Takeshi Nakano et al.
doi:10.1038/nchembio.2181



Vzb22, an amino-group carrier protein from Streptomyces, is required for biosynthesis of the noncanonical amino acid DADH, a biosynthetic precursor of vazabitide A and related azabicyclohexane natural products.
Chemical compounds

Structural basis for precursor protein-directed ribosomal peptide macrocyclization   pp973 - 979
Kunhua Li, Heather L Condurso, Gengnan Li, Yousong Ding and Steven D Bruner
doi:10.1038/nchembio.2200



Biosynthesis of the protease inhibitor microviridin J includes peptide macrocyclization catalyzed by two enzymes of the ATP-grasp family. Structures of these macrocyclases, MdnB and MdnC, reveal how they recognize their precursor-peptide substrates.

A chemical-inducible CRISPR-Cas9 system for rapid control of genome editing   pp980 - 987
Kaiwen Ivy Liu, Muhammad Nadzim Bin Ramli, Cheok Wei Ariel Woo, Yuanming Wang, Tianyun Zhao et al.
doi:10.1038/nchembio.2179



A modified version of Cas9 with a fusion of the hormone-binding domain of the estrogen receptor allows reversible control of Cas9 activity with high efficiency at multiple loci with 4-hydroxytamoxifen treatment.

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