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Ajibola I Abioye, Sangshin Park, Kelsey Ripp, Emily A McDonald, Jonathan D Kurtis, Hannah Wu, Sunthorn Pond-Tor, Surendra Sharma, Jan Ernerudh, Palmera Baltazar, Luz P Acosta, Remigio M Olveda, Veronica Tallo, Jennifer F Friedman
Background: To our knowledge, no studies have addressed whether maternal anemia of inflammation (AI) affects newborn iron status, and few have addressed risk factors for specific etiologies of maternal anemia. Objectives: The study aims were to evaluate 1) the contribution of AI and iron deficiency anemia (IDA) to newborn iron endowment, 2) hepcidin as a biomarker to distinguish AI from IDA among pregnant women, and 3) risk factors for specific etiologies of maternal anemia...
March 1, 2018: Journal of Nutrition
Graham A Hudson, Douglas A Mitchell
The threat of antibiotic resistant bacterial infections continues to underscore the need for new treatment options. Historically, small molecule metabolites from microbes have provided a rich source of antibiotic compounds, and as a result, significant effort has been invested in engineering the responsible biosynthetic pathways to generate novel analogs with attractive pharmacological properties. Unfortunately, biosynthetic stringency has limited the capacity of non-ribosomal peptide synthetases and polyketide synthases from producing substantially different analogs in large numbers...
March 10, 2018: Current Opinion in Microbiology
T Missau, A B Venturini, Gkr Pereira, C Prochnow, L F Valandro, M P Rippe
The aim of this study was to evaluate the effect of etching, with different hydrofluoric acid concentrations at the intaglio surface of feldspathic ceramic inlays, on the fatigue failure load of restored premolars. A total of 60 upper premolars were embedded in plastic cylinders with acrylic resin (up to 3 mm below the cement-enamel junction) and prepared using a device specially designed for that purpose. Teeth were randomly assigned to three groups (n=20): HF1, HF5, and HF10 (etching with hydrofluoric acid for 60 seconds at concentrations of 1%, 5%, and 10%, respectively)...
March 2018: Operative Dentistry
Jonathan Ripp, Hasan Bazari, Colin P West
No abstract text is available yet for this article.
March 2018: Academic Medicine: Journal of the Association of American Medical Colleges
Julia Dolinina, Anna Rippe, Peter Bentzer, Carl M Öberg
It is well known that proteinuria following urinary tract obstruction is mainly of a tubular nature. Whether there are also changes in glomerular permeability is however unknown. In this study we compared glomerular sieving coefficients (θ) of polydisperse fluorescein isothiocyanate (FITC)-Ficoll 70/400 following 120 or 180 min unilateral ureteral obstruction (UUO) in anesthetized Sprague-Dawley rats. Samples were collected from the obstructed kidney at 5, 15 and 30 minutes post-release and analyzed by means of high pressure size-exclusion chromatography (HP-SEC)...
February 21, 2018: American Journal of Physiology. Renal Physiology
T Aaltonen, V M Abazov, B Abbott, B S Acharya, M Adams, T Adams, J P Agnew, G D Alexeev, G Alkhazov, A Alton, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, J A Appel, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, A Askew, S Atkins, B Auerbach, K Augsten, A Aurisano, V Aushev, Y Aushev, C Avila, F Azfar, F Badaud, W Badgett, T Bae, L Bagby, B Baldin, D V Bandurin, S Banerjee, A Barbaro-Galtieri, E Barberis, P Baringer, V E Barnes, B A Barnett, P Barria, J F Bartlett, P Bartos, U Bassler, M Bauce, V Bazterra, A Bean, F Bedeschi, M Begalli, S Behari, L Bellantoni, G Bellettini, J Bellinger, D Benjamin, A Beretvas, S B Beri, G Bernardi, R Bernhard, I Bertram, M Besançon, R Beuselinck, P C Bhat, S Bhatia, V Bhatnagar, A Bhatti, K R Bland, G Blazey, S Blessing, K Bloom, B Blumenfeld, A Bocci, A Bodek, A Boehnlein, D Boline, E E Boos, G Borissov, D Bortoletto, M Borysova, J Boudreau, A Boveia, A Brandt, O Brandt, L Brigliadori, M Brochmann, R Brock, C Bromberg, A Bross, D Brown, E Brucken, X B Bu, J Budagov, H S Budd, M Buehler, V Buescher, V Bunichev, S Burdin, K Burkett, G Busetto, P Bussey, C P Buszello, P Butti, A Buzatu, A Calamba, E Camacho-Pérez, S Camarda, M Campanelli, F Canelli, B Carls, D Carlsmith, R Carosi, S Carrillo, B Casal, M Casarsa, B C K Casey, H Castilla-Valdez, A Castro, P Catastini, S Caughron, D Cauz, V Cavaliere, A Cerri, L Cerrito, S Chakrabarti, K M Chan, A Chandra, A Chapelain, E Chapon, G Chen, Y C Chen, M Chertok, G Chiarelli, G Chlachidze, K Cho, S W Cho, S Choi, D Chokheli, B Choudhary, S Cihangir, D Claes, A Clark, C Clarke, J Clutter, M E Convery, J Conway, M Cooke, W E Cooper, M Corbo, M Corcoran, M Cordelli, F Couderc, M-C Cousinou, C A Cox, D J Cox, M Cremonesi, D Cruz, J Cuevas, R Culbertson, J Cuth, D Cutts, A Das, N d'Ascenzo, M Datta, G Davies, P de Barbaro, S J de Jong, E De La Cruz-Burelo, F Déliot, R Demina, L Demortier, M Deninno, D Denisov, S P Denisov, M D'Errico, S Desai, C Deterre, K DeVaughan, F Devoto, A Di Canto, B Di Ruzza, H T Diehl, M Diesburg, P F Ding, J R Dittmann, A Dominguez, S Donati, M D'Onofrio, M Dorigo, A Driutti, A Drutskoy, A Dubey, L V Dudko, A Duperrin, S Dutt, M Eads, K Ebina, R Edgar, D Edmunds, A Elagin, J Ellison, V D Elvira, Y Enari, R Erbacher, S Errede, B Esham, H Evans, A Evdokimov, V N Evdokimov, S Farrington, A Fauré, L Feng, T Ferbel, J P Fernández Ramos, F Fiedler, R Field, F Filthaut, W Fisher, H E Fisk, G Flanagan, R Forrest, M Fortner, H Fox, J Franc, M Franklin, J C Freeman, H Frisch, S Fuess, Y Funakoshi, C Galloni, P H Garbincius, A Garcia-Bellido, J A García-González, A F Garfinkel, P Garosi, V Gavrilov, W Geng, C E Gerber, H Gerberich, E Gerchtein, Y Gershtein, S Giagu, V Giakoumopoulou, K Gibson, C M Ginsburg, G Ginther, N Giokaris, P Giromini, V Glagolev, D Glenzinski, O Gogota, M Gold, D Goldin, A Golossanov, G Golovanov, G Gomez, G Gomez-Ceballos, M Goncharov, O González López, I Gorelov, A T Goshaw, K Goulianos, E Gramellini, P D Grannis, S Greder, H Greenlee, G Grenier, Ph Gris, J-F Grivaz, A Grohsjean, C Grosso-Pilcher, S Grünendahl, M W Grünewald, T Guillemin, J Guimaraes da Costa, G Gutierrez, P Gutierrez, S R Hahn, J Haley, J Y Han, L Han, F Happacher, K Hara, K Harder, M Hare, A Harel, R F Harr, T Harrington-Taber, K Hatakeyama, J M Hauptman, C Hays, J Hays, T Head, T Hebbeker, D Hedin, H Hegab, J Heinrich, A P Heinson, U Heintz, C Hensel, I Heredia-De La Cruz, M Herndon, K Herner, G Hesketh, M D Hildreth, R Hirosky, T Hoang, J D Hobbs, A Hocker, B Hoeneisen, J Hogan, M Hohlfeld, J L Holzbauer, Z Hong, W Hopkins, S Hou, I Howley, Z Hubacek, R E Hughes, U Husemann, M Hussein, J Huston, V Hynek, I Iashvili, Y Ilchenko, R Illingworth, G Introzzi, M Iori, A S Ito, A Ivanov, S Jabeen, M Jaffré, E James, D Jang, A Jayasinghe, B Jayatilaka, E J Jeon, M S Jeong, R Jesik, P Jiang, S Jindariani, K Johns, E Johnson, M Johnson, A Jonckheere, M Jones, P Jonsson, K K Joo, J Joshi, S Y Jun, A W Jung, T R Junk, A Juste, E Kajfasz, M Kambeitz, T Kamon, P E Karchin, D Karmanov, A Kasmi, Y Kato, I Katsanos, M Kaur, R Kehoe, S Kermiche, W Ketchum, J Keung, N Khalatyan, A Khanov, A Kharchilava, Y N Kharzheev, B Kilminster, D H Kim, H S Kim, J E Kim, M J Kim, S H Kim, S B Kim, Y J Kim, Y K Kim, N Kimura, M Kirby, I Kiselevich, J M Kohli, K Kondo, D J Kong, J Konigsberg, A V Kotwal, A V Kozelov, J Kraus, M Kreps, J Kroll, M Kruse, T Kuhr, A Kumar, A Kupco, M Kurata, T Kurča, V A Kuzmin, A T Laasanen, S Lammel, S Lammers, M Lancaster, K Lannon, G Latino, P Lebrun, H S Lee, H S Lee, J S Lee, S W Lee, W M Lee, X Lei, J Lellouch, S Leo, S Leone, J D Lewis, D Li, H Li, L Li, Q Z Li, J K Lim, A Limosani, D Lincoln, J Linnemann, V V Lipaev, E Lipeles, R Lipton, A Lister, H Liu, Q Liu, T Liu, Y Liu, A Lobodenko, S Lockwitz, A Loginov, M Lokajicek, R Lopes de Sa, D Lucchesi, A Lucà, J Lueck, P Lujan, P Lukens, R Luna-Garcia, G Lungu, A L Lyon, J Lys, R Lysak, A K A Maciel, R Madar, R Madrak, P Maestro, R Magaña-Villalba, S Malik, S Malik, V L Malyshev, G Manca, A Manousakis-Katsikakis, J Mansour, L Marchese, F Margaroli, P Marino, J Martínez-Ortega, K Matera, M E Mattson, A Mazzacane, P Mazzanti, R McCarthy, C L McGivern, R McNulty, A Mehta, P Mehtala, M M Meijer, A Melnitchouk, D Menezes, P G Mercadante, M Merkin, C Mesropian, A Meyer, J Meyer, T Miao, F Miconi, D Mietlicki, A Mitra, H Miyake, S Moed, N Moggi, N K Mondal, C S Moon, R Moore, M J Morello, A Mukherjee, M Mulhearn, Th Muller, P Murat, M Mussini, J Nachtman, Y Nagai, J Naganoma, E Nagy, I Nakano, A Napier, M Narain, R Nayyar, H A Neal, J P Negret, J Nett, P Neustroev, H T Nguyen, T Nigmanov, L Nodulman, S Y Noh, O Norniella, T Nunnemann, L Oakes, S H Oh, Y D Oh, T Okusawa, R Orava, J Orduna, L Ortolan, N Osman, C Pagliarone, A Pal, E Palencia, P Palni, V Papadimitriou, N Parashar, V Parihar, S K Park, W Parker, R Partridge, N Parua, A Patwa, G Pauletta, M Paulini, C Paus, B Penning, M Perfilov, Y Peters, K Petridis, G Petrillo, P Pétroff, T J Phillips, G Piacentino, E Pianori, J Pilot, K Pitts, C Plager, M-A Pleier, V M Podstavkov, L Pondrom, A V Popov, S Poprocki, K Potamianos, A Pranko, M Prewitt, D Price, N Prokopenko, F Prokoshin, F Ptohos, G Punzi, J Qian, A Quadt, B Quinn, P N Ratoff, I Razumov, I Redondo Fernández, P Renton, M Rescigno, F Rimondi, I Ripp-Baudot, L Ristori, F Rizatdinova, A Robson, T Rodriguez, S Rolli, M Rominsky, M Ronzani, R Roser, J L Rosner, A Ross, C Royon, P Rubinov, R Ruchti, F Ruffini, A Ruiz, J Russ, V Rusu, G Sajot, W K Sakumoto, Y Sakurai, A Sánchez-Hernández, M P Sanders, L Santi, A S Santos, K Sato, G Savage, V Saveliev, M Savitskyi, A Savoy-Navarro, L Sawyer, T Scanlon, R D Schamberger, Y Scheglov, H Schellman, P Schlabach, E E Schmidt, M Schott, C Schwanenberger, T Schwarz, R Schwienhorst, L Scodellaro, F Scuri, S Seidel, Y Seiya, J Sekaric, A Semenov, H Severini, F Sforza, E Shabalina, S Z Shalhout, V Shary, S Shaw, A A Shchukin, T Shears, P F Shepard, M Shimojima, O Shkola, M Shochet, I Shreyber-Tecker, V Simak, A Simonenko, P Skubic, P Slattery, K Sliwa, J R Smith, F D Snider, G R Snow, J Snow, S Snyder, S Söldner-Rembold, H Song, L Sonnenschein, V Sorin, K Soustruznik, R St Denis, M Stancari, J Stark, N Stefaniuk, D Stentz, D A Stoyanova, M Strauss, J Strologas, Y Sudo, A Sukhanov, I Suslov, L Suter, P Svoisky, K Takemasa, Y Takeuchi, J Tang, M Tecchio, P K Teng, J Thom, E Thomson, V Thukral, M Titov, D Toback, S Tokar, V V Tokmenin, K Tollefson, T Tomura, D Tonelli, S Torre, D Torretta, P Totaro, M Trovato, Y-T Tsai, D Tsybychev, B Tuchming, C Tully, F Ukegawa, S Uozumi, L Uvarov, S Uvarov, S Uzunyan, R Van Kooten, W M van Leeuwen, N Varelas, E W Varnes, I A Vasilyev, F Vázquez, G Velev, C Vellidis, A Y Verkheev, C Vernieri, L S Vertogradov, M Verzocchi, M Vesterinen, M Vidal, D Vilanova, R Vilar, J Vizán, M Vogel, P Vokac, G Volpi, P Wagner, H D Wahl, R Wallny, M H L S Wang, S M Wang, J Warchol, D Waters, G Watts, M Wayne, J Weichert, L Welty-Rieger, W C Wester, D Whiteson, A B Wicklund, S Wilbur, H H Williams, M R J Williams, G W Wilson, J S Wilson, P Wilson, B L Winer, P Wittich, M Wobisch, S Wolbers, H Wolfmeister, D R Wood, T Wright, X Wu, Z Wu, T R Wyatt, Y Xie, R Yamada, K Yamamoto, D Yamato, S Yang, T Yang, U K Yang, Y C Yang, W-M Yao, T Yasuda, Y A Yatsunenko, W Ye, Z Ye, G P Yeh, K Yi, H Yin, K Yip, J Yoh, K Yorita, T Yoshida, S W Youn, G B Yu, I Yu, J M Yu, A M Zanetti, Y Zeng, J Zennamo, T G Zhao, B Zhou, C Zhou, J Zhu, M Zielinski, D Zieminska, L Zivkovic, S Zucchelli
The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiproton collisions at a center-of-mass energy of sqrt[s]=1.96  TeV. We report the results of combinations of the inclusive asymmetries and their differential dependencies on relevant kinematic quantities. The combined inclusive asymmetry is A_{FB}^{tt[over ¯]}=0...
January 26, 2018: Physical Review Letters
K Jeanne Dit Fouque, H Lavanant, S Zirah, J D Hegemann, C D Fage, M A Marahiel, S Rebuffat, C Afonso
Lasso peptides constitute a structurally unique class of ribosomally synthesized and post-translationally modified peptides (RiPPs) characterized by a mechanically interlocked structure in which the C-terminal tail of the peptide is threaded and trapped within an N-terminal macrolactam ring. Tandem mass spectrometry using collision induced dissociation (CID) and electron capture dissociation (ECD) have shown previously different fragmentation patterns for capistruin, microcin J25 and their corresponding branched-cyclic forms in which the C-terminal tail is unthreaded...
February 6, 2018: Analyst
Teppei Kawahara, Miho Izumikawa, Ikuko Kozone, Junko Hashimoto, Noritaka Kagaya, Hanae Koiwai, Mamoru Komatsu, Manabu Fujie, Noriyuki Sato, Haruo Ikeda, Kazuo Shin-Ya
During genome mining for thioviridamide-like biosynthetic gene clusters that could produce polythioamide RiPP (ribosomally synthesized and post-translationally modified peptides), we discovered a novel cryptic biosynthetic gene cluster. During efforts to express this biosynthetic gene using heterologous expression of this biosynthetic gene cluster, a novel compound designated as neothioviridamide was produced. We report herein the cloning and heterologous expression of the neothioviridamide biosynthetic gene cluster and the isolation, structure determination, and cytotoxic activity of neothioviridamide...
January 30, 2018: Journal of Natural Products
Priya Chudasama, Sadaf S Mughal, Mathijs A Sanders, Daniel Hübschmann, Inn Chung, Katharina I Deeg, Siao-Han Wong, Sophie Rabe, Mario Hlevnjak, Marc Zapatka, Aurélie Ernst, Kortine Kleinheinz, Matthias Schlesner, Lina Sieverling, Barbara Klink, Evelin Schröck, Remco M Hoogenboezem, Bernd Kasper, Christoph E Heilig, Gerlinde Egerer, Stephan Wolf, Christof von Kalle, Roland Eils, Albrecht Stenzinger, Wilko Weichert, Hanno Glimm, Stefan Gröschel, Hans-Georg Kopp, Georg Omlor, Burkhard Lehner, Sebastian Bauer, Simon Schimmack, Alexis Ulrich, Gunhild Mechtersheimer, Karsten Rippe, Benedikt Brors, Barbara Hutter, Marcus Renner, Peter Hohenberger, Claudia Scholl, Stefan Fröhling
Leiomyosarcoma (LMS) is an aggressive mesenchymal malignancy with few therapeutic options. The mechanisms underlying LMS development, including clinically actionable genetic vulnerabilities, are largely unknown. Here we show, using whole-exome and transcriptome sequencing, that LMS tumors are characterized by substantial mutational heterogeneity, near-universal inactivation of TP53 and RB1, widespread DNA copy number alterations including chromothripsis, and frequent whole-genome duplication. Furthermore, we detect alternative telomere lengthening in 78% of cases and identify recurrent alterations in telomere maintenance genes such as ATRX, RBL2, and SP100, providing insight into the genetic basis of this mechanism...
January 10, 2018: Nature Communications
Julianne Mendi Muthinja, Johanna Ripp, Timothy Krüger, Andrea Imle, Tamás Haraszti, Oliver T Fackler, Joachim P Spatz, Markus Engstler, Friedrich Frischknecht
Motile cells and pathogens migrate in complex environments and yet are mostly studied on simple 2D substrates. In order to mimic the diverse environments of motile cells, a set of assays including substrates of defined elasticity, microfluidics, micropatterns, organotypic cultures, and 3D gels have been developed. We briefly introduce these and then focus on the use of micropatterned pillar arrays, which help to bridge the gap between 2D and 3D. These structures are made from polydimethylsiloxane, a moldable plastic, and their use has revealed new insights into mechanoperception in Caenorhabditis elegans, gliding motility of Plasmodium, swimming of trypanosomes, and nuclear stability in cancer cells...
March 2018: Cellular Microbiology
(no author information available yet)
First Person is a series of interviews with the first authors of a selection of papers published in Journal of Cell Science, helping early-career researchers promote themselves alongside their papers. Anne Rademacher is the first author on 'Real-time observation of light-controlled transcription in living cells', published in Journal of Cell Science. Anne is a PhD student in the laboratory of Karsten Rippe at the German Cancer Research Center and the Bioquant institute, Heidelberg, Germany, investigating the transcriptional silencing and activation of heterochromatin by using optogenetic tools and other microscopy methods...
December 15, 2017: Journal of Cell Science
Mariah A Quinn, Hasan Bazari, Jonathan Ripp, Lauren Block, Katherine C Chretien, Ethan D Fried, Richard E Leiter, Amber T Pincavage, Brielle Spataro, Mickey Trockel, Colin P West
No abstract text is available yet for this article.
December 12, 2017: American Journal of Medicine
Luís Felipe Guilardi, Gabriel Kalil Rocha Pereira, Vinícius Felipe Wandscher, Marília Pivetta Rippe, Luiz Felipe Valandro
This study aimed to characterize and compare the effect of different aging regimens on surface characteristic (topography and roughness), structural stability (phase transformation) and mechanical performance (Weibull analysis) of a Y-TZP ceramic. Discs (15 × 1.2 mm; VITA In-Ceram YZ) were prepared according to ISO 6872-2015 for biaxial flexural strength testing and randomly assigned into five groups (n = 30): as-sintered, no aging treatment (CTRL); 20 h in autoclave at 134°C, 2 bar pressure (AUT); intermittent mechanical loading at 20 Hz/106 load pulses (MechLoad); AUT followed by MechLoad (AUT+MechLoad); and storage in distilled water at 37°C, for 1 year (STO)...
December 7, 2017: Brazilian Oral Research
Johan Holmberg, Anirban Bhattachariya, Azra Alajbegovic, Catarina Rippe, Mari Ekman, Diana Dahan, Tran Thi Hien, Thomas Boettger, Thomas Braun, Karl Swärd, Per Hellstrand, Sebastian Albinsson
OBJECTIVE: Pressure-induced myogenic tone is involved in autoregulation of local blood flow and confers protection against excessive pressure levels in small arteries and capillaries. Myogenic tone is dependent on smooth muscle microRNAs (miRNAs), but the identity of these miRNAs is unclear. Furthermore, the consequences of altered myogenic tone for hypertension-induced damage to small arteries are not well understood. APPROACH AND RESULTS: The importance of smooth muscle-enriched microRNAs, miR-143/145, for myogenic tone was evaluated in miR-143/145 knockout mice...
February 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
Tingting Xu, Anna Young, Enolia Marr, Gary Sayler, Steven Ripp, Dan Close
An autonomously bioluminescent Saccharomyces cerevisiae BLYAhS bioreporter was developed in this study for the simple and rapid detection of dioxin-like compounds (DLCs) and aryl hydrocarbon receptor (AhR) agonists. This recombinant yeast reporter was based on a synthetic bacterial luciferase reporter gene cassette (lux) that can produce the luciferase as well as the enzymes capable of self-synthesizing the requisite substrates for bioluminescent production from endogenous cellular metabolites. As a result, bioluminescent signal production is generated continuously and autonomously without cell lysis or exogenous reagent addition...
February 2018: Analytical and Bioanalytical Chemistry
Tingting Xu, Michael Conway, Ashley Frank, Steven Ripp, Gary Sayler, Dan Close
Modern drug discovery workflows require assay systems capable of replicating the complex interactions of multiple tissue types, but that can still function under high throughput conditions. In this work, we evaluate the use of substrate-free autobioluminescence in human cell lines to support the performance of these assays with reduced economical and logistical restrictions relative to substrate-requiring bioluminescent reporter systems. The use of autobioluminescence was found to support assay functionality similar to existing luciferase reporter targets...
December 6, 2017: Sensors
Christian J Michel, Viviane Nguefack Ngoune, Olivier Poch, Raymond Ripp, Julie D Thompson
A set X of 20 trinucleotides has been found to have the highest average occurrence in the reading frame, compared to the two shifted frames, of genes of bacteria, archaea, eukaryotes, plasmids and viruses. This set X has an interesting mathematical property, since X is a maximal C3 self-complementary trinucleotide circular code. Furthermore, any motif obtained from this circular code X has the capacity to retrieve, maintain and synchronize the original (reading) frame. Since 1996, the theory of circular codes in genes has mainly been developed by analysing the properties of the 20 trinucleotides of X, using combinatorics and statistical approaches...
December 3, 2017: Life
Laura Franz, Sebastian Adam, Javier Santos-Aberturas, Andrew W Truman, Jesko Koehnke
The YcaO superfamily of proteins catalyzes the phosphorylation of peptide backbone amide bonds, which leads to the formation of azolines and azoles in ribosomally synthesized and post-translationally modified peptides (RiPPs). Bottromycins are RiPPs with potent antimicrobial activity, and their biosynthetic pathway contains two divergent, stand-alone YcaO enzymes, IpoC and PurCD. From an untargeted metabolomics approach, it had been suggested that PurCD acts with a partner protein to form the 12-membered macroamidine unique to bottromycins...
December 20, 2017: Journal of the American Chemical Society
Christopher J Schwalen, Graham A Hudson, Simone Kosol, Nilkamal Mahanta, Gregory L Challis, Douglas A Mitchell
The bottromycins belong to the ribosomally synthesized and posttranslationally modified peptide (RiPP) family of natural products. Bottromycins exhibit unique structural features, including a hallmark macrolactamidine ring and thiazole heterocycle for which divergent members of the YcaO superfamily have been biosynthetically implicated. Here we report the in vitro reconstitution of two YcaO proteins, BmbD and BmbE, responsible for the ATP-dependent cyclodehydration reactions that yield thiazoline- and macrolactamidine-functionalized products, respectively...
December 20, 2017: Journal of the American Chemical Society
John P Rippe, Mikhail V Matz, Elizabeth A Green, Mónica Medina, Nida Z Khawaja, Thanapat Pongwarin, Jorge H Pinzón C, Karl D Castillo, Sarah W Davies
As coral reefs continue to decline worldwide, it becomes ever more necessary to understand the connectivity between coral populations to develop efficient management strategies facilitating survival and adaptation of coral reefs in the future. Orbicella faveolata is one of the most important reef-building corals in the Caribbean and has recently experienced severe population reductions. Here, we utilize a panel of nine microsatellite loci to evaluate the genetic structure of O. faveolata and to infer connectivity across ten sites spanning the wider Caribbean region...
November 2017: Ecology and Evolution
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