Fluorescence microscopy has transformed the life sciences. By attaching fluorescent dyes or proteins to cellular structures, researchers can image fine cellular morphology; track molecular localization, motion, and dynamics; and more. But fluorescence microscopy also presents significant obstacles. One of those is multiplexing.
{credit}Michael Helfenbein{/credit}
The term “genome-editing” has become synonymous with CRISPR-Cas. But there’s more than one way to edit a genome, and each has its pros and cons.
The 3D OrbiSIMS {credit}Courtesy of the National Physical Laboratory{/credit}
The current focus on single-cell biology reflects the growing awareness among life scientists that all cells are not alike.
In the genomics world, methods such as scRNA-seq and Drop-seq allow researchers to probe cellular heterogeneity at the genetic level using next-gen DNA sequencing. Mass spectrometry imaging (MSI) does likewise for protein and metabolite studies.
“How’s my paper doing?” It’s such a simple question, and in today’s hyperconnected world it’s relatively easy to work out who’s reading and talking about your scientific publications. But are there conversations you might be overlooking?
{credit}Allister Crow/Twitter{/credit}
Update (9 Dec 2017): Allister Crow has updated his instructions to produce colored AR structures; they are available here.
Scientific publications represent years of work. It’d be nice if somebody read them.
That’s the problem Allister Crow faced as his postdoctoral work was published in early November.
Crow, a structural biologist at the University of Cambridge, UK, was part of a team, led by Vassilis Koronakis, that solved the structure of a bacterial protein called MacB, a pump protein that is involved in antibiotic resistance and toxin secretion. The paper went online November 6 in the Proceedings of the National Academy of Sciences. But how to get people — and especially those outside his immediate field — to notice?
{credit}Screenshot/Jeffrey Perkel{/credit}
For decades, the research communities surrounding the major model organisms have each had an online place to call home. There’s the SGD, MGD, and RGD — the Saccharomyces, mouse, and rat genome databases, respectively; FlyBase and WormBase for Drosophila and C. elegans; and ZFIN, the Zebrafish Information Network.
{credit}Timothée Poisot{/credit}
Timothée Poisot recently travelled to London for MozFest 2017, “The world’s leading festival for the open Internet movement.” There, the quantitative and computational ecologist at the University of Montréal in Canada ran a session entitled “Scientific computing for the terabyte-less.” Here, he tells Naturejobs why life science research needn’t necessarily follow the Big Data model.
{credit}Johannes Köster/GitHub{/credit}
Bioinformatics is notoriously complicated, what with its arcane command-line interface, complex workflows, and massive datasets. For the uninitiated, simply installing the software can present a problem.
A new paper on the bioRxiv preprint archive describes one possible solution, a bioinformatics-focused package collection called Bioconda.
Juicebox.js{credit}Screenshot/Jeffrey Perkel{/credit}
Data reproducibility and transparency mean different things to different people, but one aspect involves allowing scientists to view and manipulate the data or code underlying published figures, both to double-check others’ work and to repeat those analyses using custom data. Over the past year, for instance, the open-access journal F1000Research has implemented integrations with Code Ocean and Plotly for viewing and manipulating programming code and figures, respectively. Now, a new publication showcases interactive figures for 3D genome analysis, too.
{credit}Nik Spencer/Nature{/credit}
For this week’s Technology Feature, Michael Eisenstein wrote about the technology, applications, and challenges of nanopore DNA sequencing. In brief, the technology involves threading intact pieces of DNA through a tiny aperture in a membrane or other barrier, through which a current flows. As each base passes, it disrupts that current in a characteristic way, allowing specialized software to determine the sequence.
The technology has multiple benefits: it’s relatively inexpensive and compact, and produces exceptionally long reads. But the resulting error rate is also higher than some other technologies. What that means is, informatics tools designed to handle short-read data can often stumble when confronted with nanopore sequences. But a growing collection of dedicated long-read tools is rapidly filling in the gap. I asked a few nanopore veterans to help me compile a list.