43 Works

Ecological and biogeographic processes drive the proteome evolution of snake venom

Tuany Siqueira-Silva, Luiz Lima, Jônatas Chaves-Silveira, Talita Amado, Julian Naipauer, Pablo Riul & Pablo Martinez
The emergence of venom is an evolutionary innovation that favored the diversification and survival of snakes. The composition of snake venoms is known in detail from venom gland proteomic data. However, there is still a gap of knowledge about the forces that lead to the expression of different toxins in different proportions in the venom cocktail across space and time. LOCATION World. TIME PERIOD Modern. MAJOR TAXA STUDIED Elapidae and Viperidae. We integrated proteomic data...

Area and Timing data and R script for: 3D scanning as a tool to measure growth rates of live coral microfragments used for coral reef restoration

Hanna Koch, Bailey Wallace, Allyson DeMerlis, Abigail Clark & Robert Nowicki
Rapid and widespread declines in coral health and abundance have driven increased investments in coral reef restoration interventions to jumpstart population recovery. Microfragmentation, an asexual propagation technique, is used to produce large numbers of corals for research and restoration. As part of resilience-based restoration, coral microfragments of different genotypes and species are exposed to various stressors to identify candidates for propagation. Growth rate is one of several important fitness-related traits commonly used in candidate selection,...

Interindividual plasticity in metabolic and thermal tolerance traits from populations subjected to recent anthropogenic heating

Melissa Drown, Amanda DeLiberto, Moritz Ehrlich, Douglas Crawford & Marjorie Oleksiak
To better understand temperature’s role in the interaction between local evolutionary adaptation and physiological plasticity, we investigated acclimation effects on metabolic performance and thermal tolerance among natural Fundulus heteroclitus populations from different thermal environments. F. heteroclitus populations experience large daily and seasonal temperature variations, as well as local mean temperature differences across their large geographic cline. In this study, we focus on three populations: one locally heated (32°C) by thermal effluence (TE) from the Oyster...

Comparison of adult census size and effective population size support the need for continued protection of two Solomon Island endemics

Sarah A. Cowles, Brian C. Weeks, Lindsey Perrin, Nancy Chen & J. Albert C. Uy
Because a population’s ability to respond to rapid change is dictated by standing genetic variation, we can better predict a population’s long-term viability by estimating and then comparing adult census size (N) and effective population size (Ne). However, most studies only measure N or Ne, which can be misleading. Using a combination of field and genomic sequence data, we here estimate and compare N and Ne in two range-restricted endemics of the Solomon Islands. Two...

Aboveground carbon stocks and dynamics in Andean forests

Alvaro Duque, Miguel Peña, Francisco Cuesta, Sebastián González-Caro, Peter Kennedy, Oliver Phillips, Marco Calderón, Cecilia Blundo, Julieta Carilla, Leslie Cayola, William Farfán-Ríos, Alfredo Fuentes, Ricardo Grau, Jürgen Homeier, María I. Loza-Rivera, Jonathan A. Myers, Oriana Osinaga-Acosta, Manuel Peralvo, Esteban Pinto, Sassan Saatchi, Miles Silman, J. Sebastián Tello, Andrea Terán-Valdez & Kenneth J. Feeley
This dataset (Andean_AGB.xlsx) has the data employed in the paper entitled Old-growth Andean forests as globally important carbon sinks and future carbon refuges. The data was compiled as the results of the work of several research teams spread out across the Andean region. The information available here has data about aboveground carbon stocks and dynamics and the main explanatory variables, such as climate and symbiotic root associations.

Synthesis and Binding Properties of Monohydroxycucurbit[7]uril: A Key Derivative for the Functionalization of Cucurbituril Hosts

Nan Dong, Jing He, Tao Li, Andrea Peralta, Mehdi Rashvand Avei, Mingfang Ma & Angel E. Kaifer
We present a simple, direct method to prepare monohydroxylated cucurbit[7]uril (CB7-OH) through the direct oxidation of its precursor host, cucurbit[7]uril (CB7). Although the conversion takes place in low yield (14%), the isolation of CB7-OH from the reaction mixture is straightforward, and the unreacted CB7 can be easily recovered. ITC measurements with several selected guests confirmed that CB7-OH binds all of them in aqueous solution with similar, albeit slightly lower, binding affinities than those observed with...

Complexation of Ferrocene Derivatives by the Cucurbit[7]uril Host:  A Comparative Study of the Cucurbituril and Cyclodextrin Host Families

Woo Sung Jeon, Kwangyul Moon, Sang Hyun Park, Hyungpil Chun, Young Ho Ko, Jin Yong Lee, Eun Sung Lee, S. Samal, N. Selvapalam, Mikhail V. Rekharsky, Vladimir Sindelar, David Sobransingh, Yoshihisa Inoue, Angel E. Kaifer & Kimoon Kim
The formation of inclusion complexes between cucurbit[7]uril (CB[7]) and ferrocene and its derivatives has been investigated. The X-ray crystal structure of the 1:1 inclusion complex between ferrocene and CB[7] revealed that the guest molecule resides in the host cavity with two different orientations. Inclusion of a set of five water-soluble ferrocene derivatives in CB[7] was investigated by 1H NMR spectroscopy and calorimetric and voltammetric techniques. Our data indicate that all neutral and cationic guests form...

Tight inclusion complexation of 2,7-dimethyldiazapyrenium in cucurbit[7]uril

Angel E. Kaifer, Vladimir Sindelar, Mabel A. Cejas & Fran�isco M. Raymo
The dicationic guest 2,7-dimethyldiazapyrenium is bound inside the host cucurbit[7]uril, forming a very stable inclusion complex in which the host undergoes structural distortions to accommodate the guest.

Unusual Electrochemical Properties of the Inclusion Complexes of Ferrocenium and Cobaltocenium with Cucurbit[7]uril

Angel E. Kaifer & Winston Ong
Ferrocenium and cobaltocenium form highly stable 1:1 inclusion complexes with the host cucurbit[7]uril. From electronic absorption spectroscopic data the association equilibrium constants for both complexes were found to be larger than 106 L/mol. The electrochemical reduction of either guest leads to a modest loss in binding affinity.

2019 Survey of Florida Residents to Evaluate Public Comprehension of the “Cone of Uncertainty” Graphic

Scotney Evans, Kenneth Broad, Alberto Cairo, Sharanya Majumdar, Brian McNoldy, Barbara Millet & Leigh Rauk
This data set contains results from an online survey targeting a sample of 2,847 Florida residents in 2019. Unlike previous public surveys that focused more on evacuation decisions, forecast usage, and perception of hurricane risk, our approach specifically pays attention to the details of design elements of the forecast graphics with the long-term goal of minimizing misinterpretation of future graphics. The survey comprised 55 mostly multiple-choice and True/False questions, including demographic information and a series...

First Atlantic satellite tracks of lost years green turtles support the importance of the Sargasso Sea as a sea turtle nursery

Katherine Mansfield, Jeanette Wyneken & Jiangang Luo
In-water behaviour and long-term movements of oceanic-stage juvenile sea turtles are not well described or quantified. This is due to technological or logistical limitations of tracking small, fast-growing animals across long distances and time-periods within marine habitats. Here we present the first long-term offshore tracks of oceanic green turtles (Chelonia mydas) in western North Atlantic waters. Using a tag attachment technique developed specifically for young (<1 year old) green turtles, we satellite tracked 21 oceanic-stage...

2D and 3D coral models imaged in Curaçao: George, Mullinix, et al PeerJ 2021

Emma E. George, James A. Mullinix, Fanwei Meng, Barbara A. Bailey, Clinton Edwards, Ben Felts, Andreas F. Haas, Aaron Hartmann, Benjamin Mueller, Ty F. Roach, Peter Salamon, Cynthia Silveira, Mark Vermeij, Forest Rohwer & Antoni Luque
Abstract from the article associated with the dataset: George, Mullinix, et al PeerJ 2021. Reef-building corals are ecosystem engineers that compete with other benthic or- ganisms for space and resources. Corals harvest energy through their surface by photosynthesis and heterotrophic feeding, and they divert part of this energy to defend their outer colony perimeter against competitors. Here, we hypothesized that corals with a larger space-filling surface and smaller perimeters increase energy gain while reducing the...

Dataset S1 - Noelaerhabdaceae organic carbon isotope culture data compilation

Samuel Phelps, Gwenn Hennon, Sonya Dyhrman, María Hernández-Limón, Olivia Williamson & Pratigya Polissar
The carbon isotope fractionation in algal organic matter (Ep), including the long-chain alkenones produced by the coccolithophorid family Noelaerhabdaceae, is used to reconstruct past atmospheric CO2 levels. The conventional proxy linearly relates Ep to changes in cellular carbon demand relative to diffusive CO2 supply, with larger Ep values occurring at lower carbon demand relative to supply (i.e. abundant CO2). However, the response of Gephyrocapsa oceanica, one of the dominant alkenone producers of the last few...

Water-mediated inclusion of benzoates and tosylates inside the bambusuril macrocycle

Angel E. Kaifer, Vaclav Havel, Vladimir Sindelar & Marek Necas
A supramolecular complex between benzoates and a bambusuril crystallizes out immediately after mixing in chloroform but only in the presence of residual water molecules. In this complex each of the two portals of the macrocycle is occupied by one benzoate. Carboxylate groups are connected through hydrogen bo

Detection of Isomeric Microscopic Host–Guest Complexes. A Time-Evolving Cucurbit[7]uril Complex

Angel E. Kaifer, Mohammad Hossein Tootoonchi & Song Yi
The formation of inclusion complexes between the cucurbit[7]uril host and a cationic guest containing ferrocenylmethyl and adamantyl residues connected to an ammonium nitrogen initially leads to an ∼1:1 mixture of two isomeric microscopic complexes, which evolves as a function of time toward the thermodynamically stable mixture, dominated by the adamantyl-included complex.

Anion-Free Bambus[6]uril and Its Supramolecular Properties

Angel E. Kaifer, Vladimir Sindelar, Petr Klán, Jan Svec, Wei Li, Michal Dusek, Karla Fejfarova, Peter Stacko & Edita Hudeckova
Abstract Methods for the preparation of anion-free bambus[6]uril (BU6) are presented. They are based on the oxidation of iodide anion, which is bound inside the macrocycle, utilizing dark oxidation...

Supramolecular Assembly of 2,7-Dimethyldiazapyrenium and Cucurbit[8]uril: A New Fluorescent Host for Detection of Catechol and Dopamine

Angel E. Kaifer, Vladimir Sindelar, Mabel A. Cejas, Françisco M. Raymo, Weizhong Chen & Samantha E. Parker
Abstract The formation of a highly stable inclusion complex between 2,7-dimethyldiazapyrenium (Me2DAP2+) and the cucurbit[8]uril host (CB8) was demonstrated by X-ray crystallography; MALDI-TOF mass...

Pronounced pH effects on the kinetics of cucurbit[7]uril-based pseudorotaxane formation and dissociation

Angel E. Kaifer, Wei Li, Serena Silvi & Vladimir Sindelar
Deprotonation of the two terminal COOH groups on a 4,4′-bipyridinium linear derivative leads to a pronounced slow down on the kinetics of threading and unthreading by the cucurbit[7]uril host.

Registration Year

  • 2021
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Affiliations

  • University of Miami
    43
  • Masaryk University
    8
  • Department of Physical and Technical Sciences
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  • Auburn University
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  • Yale University
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  • Northwestern University
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  • Wright-Patterson Air Force Base
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  • Consortium for Sustainable Development of the Andean Ecoregion
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