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Chromium X-ray source
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In the determination of protein structures by X-ray crystallography, this unique soft (l = 2.29Å) X-ray source is used to collect anomalous scattering data from protein crystals containing light atoms The Southeast Collaboratory for Structural Genomics View Media
Hungry, hungry macrophages
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Macrophages (green) are the professional eaters of our immune system. Meghan Morrissey, University of California, Santa Barbara. View Media
Fruit fly embryo
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Cells in an early-stage fruit fly embryo, showing the DIAP1 protein (pink), an inhibitor of apoptosis. Hermann Steller, Rockefeller University View Media
Dying melanoma cells
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Melanoma (skin cancer) cells undergoing programmed cell death, also called apoptosis. This process was triggered by raising the pH of the medium that the cells were growing in. Dylan T. Burnette, Vanderbilt University School of Medicine. View Media
Axolotls showing nervous system components
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Axolotls—a type of salamander—that have been genetically modified so that various parts of their nervous systems glow purple and green. Prayag Murawala, MDI Biological Laboratory and Hannover Medical School. View Media
The eye uses many layers of nerve cells to convert light into sight
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This image captures the many layers of nerve cells in the retina. The top layer (green) is made up of cells called photoreceptors that convert light into electrical signals to relay to the brain. Wei Li, National Eye Institute, National Institutes of Health View Media
Small blood vessels in a mouse retina
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Blood vessels at the back of the eye (retina) are used to diagnose glaucoma and diabetic eye disease. They also display characteristic changes in people with high blood pressure. National Center for Microscopy and Imaging Research View Media
Epithelial cell migration
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High-resolution time lapse of epithelial (skin) cell migration and wound healing. It shows an image taken every 13 seconds over the course of almost 14 minutes. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media
Bence Jones protein MLE
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A crystal of Bence Jones protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View Media
Fluorescent C. elegans showing muscle and ribosomal protein
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C. elegans, a tiny roundworm, with a ribosomal protein glowing red and muscle fibers glowing green. Researchers used these worms to study a molecular pathway that affects aging. Jarod Rollins, Mount Desert Island Biological Laboratory. View Media
Biofilm blocking fluid flow
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This time-lapse movie shows that bacterial communities called biofilms can create blockages that prevent fluid flow in devices such as stents and catheters over a period of about 56 hours. Bonnie Bassler, Princeton University View Media
Structure of Glutamate Dehydrogenase
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Some children are born with a mutation in a regulatory site on this enzyme that causes them to over-secrete insulin when they consume protein. Judy Coyle, Donald Danforth Plant Science Center View Media
HeLa cells
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Multiphoton fluorescence image of cultured HeLa cells with a fluorescent protein targeted to the Golgi apparatus (orange), microtubules (green) and counterstained for DNA (cyan). National Center for Microscopy and Imaging Research (NCMIR) View Media
X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor 2
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X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor. Markus A. Seeliger, Stony Brook University Medical School and David R. Liu, Harvard University View Media
Brain showing hallmarks of Alzheimer's disease
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Along with blood vessels (red) and nerve cells (green), this mouse brain shows abnormal protein clumps known as plaques (blue). Alvin Gogineni, Genentech View Media
Glow-in-the-dark salamanders
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These six-month-old axolotls, a kind of salamander, glow green and blue under ultraviolet light. That's because they were genetically modified to make harmless green fluorescent protein, or GFP. View Media
Snowflake yeast 2
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Multicellular yeast called snowflake yeast that researchers created through many generations of directed evolution from unicellular yeast. William Ratcliff, Georgia Institute of Technology. View Media
CCP enzyme
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The enzyme CCP is found in the mitochondria of baker’s yeast. Scientists study the chemical reactions that CCP triggers, which involve a water molecule, iron, and oxygen. Protein Data Bank. View Media
Transmission electron microscopy of coronary artery wall with elastin-rich ECM pseudocolored in light brown
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Elastin is a fibrous protein in the extracellular matrix (ECM). It is abundant in artery walls like the one shown here. As its name indicates, elastin confers elasticity. Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View Media
Ion channel
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A special "messy" region of a potassium ion channel is important in its function. Yu Zhoi, Christopher Lingle Laboratory, Washington University School of Medicine in St. Louis View Media
Enzymes convert subtrates into products
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Enzymes convert substrates into products very quickly. See image 2522 for a labeled version of this illustration. Featured in The Chemistry of Health. Crabtree + Company View Media
Beta-galactosidase montage showing cryo-EM improvement--gradient background
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Composite image of beta-galactosidase showing how cryo-EM’s resolution has improved dramatically in recent years. Older images to the left, more recent to the right. Veronica Falconieri, Sriram Subramaniam Lab, National Cancer Institute View Media
Mouse sperm sections
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This transmission electron micrograph shows sections of mouse sperm tails, or flagella. Tina Weatherby Carvalho, University of Hawaii at Manoa View Media
Clathrin-mediated endocytosis
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Endocytosis is the process by which cells are able to take up membrane and extracellular materials through the formation of a small intracellular bubble, called a vesicle. Janet Iwasa, University of Utah View Media
Pathways: The Fascinating Cells of Research Organisms
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Learn how research organisms, such as fruit flies and mice, can help us understand and treat human diseases. National Institute of General Medical Sciences View Media
Molecules blocking Huntington's protein production
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The molecules that glow blue in these cultured cells prevent the expression of the mutant proteins that cause Huntington's disease. Jiaxin Hu, David W. Dodd and Robert H. E. Hudson, UT Southwestern Medical Center View Media
Shiga toxin
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E. coli bacteria normally live harmlessly in our intestines, but some cause disease by making toxins. Amy Wu and Christine Zardecki, RCSB Protein Data Bank. View Media
Nucleolus subcompartments spontaneously self-assemble 3
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What looks a little like distant planets with some mysterious surface features are actually assemblies of proteins normally found in the cell's nucleolus, a small but very important protein complex lo Nilesh Vaidya, Princeton University View Media
Cascade reaction promoted by water
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This illustration of an epoxide-opening cascade promoted by water emulates the proposed biosynthesis of some of the Red Tide toxins. Tim Jamison, Massachusetts Institute of Technology View Media
Blinking bacteria
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Like a pulsing blue shower, E. coli cells flash in synchrony. Genes inserted into each cell turn a fluorescent protein on and off at regular intervals. Jeff Hasty, University of California, San Diego View Media
High-throughput protein structure determination pipeline
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This slide shows the technologies that the Joint Center for Structural Genomics developed for going from gene to structure and how the technologies have been integrated into a high-throughput pipeline Joint Center for Structural Genomics View Media
Pig alpha amylase
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Crystals of porcine alpha amylase protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View Media
Seeing signaling protein activation in cells 04
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Cdc42, a member of the Rho family of small guanosine triphosphatase (GTPase) proteins, regulates multiple cell functions, including motility, proliferation, apoptosis, and cell morphology. Klaus Hahn, University of North Carolina, Chapel Hill Medical School View Media
RNA folding in action
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An RNA molecule dynamically refolds itself as it is being synthesized. When the RNA is short, it ties itself into a “knot” (dark purple). Julius Lucks, Northwestern University View Media
Neurons from human ES cells 02
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These neurons were derived from human embryonic stem cells. The neural cell bodies with axonal projections are visible in red, and the nuclei in blue. Xianmin Zeng lab, Buck Institute for Age Research, via CIRM View Media
Cell-like compartments emerging from scrambled frog eggs
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Cell-like compartments spontaneously emerge from scrambled frog eggs, with nuclei (blue) from frog sperm. Endoplasmic reticulum (red) and microtubules (green) are also visible. Xianrui Cheng, Stanford University School of Medicine. View Media
Polarized cells- 02
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Cells move forward with lamellipodia and filopodia supported by networks and bundles of actin filaments. Proper, controlled cell movement is a complex process. Rong Li and Praveen Suraneni, Stowers Institute for Medical Research View Media
Enzyme transition states
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The molecule on the left is an electrostatic potential map of the van der Waals surface of the transition state for human purine nucleoside phosphorylase. Vern Schramm, Albert Einstein College of Medicine of Yeshiva University View Media
Body toxins
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Body organs such as the liver and kidneys process chemicals and toxins. These "target" organs are susceptible to damage caused by these substances. Crabtree + Company View Media
Telomerase illustration
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Reactivating telomerase in our cells does not appear to be a good way to extend the human lifespan. Cancer cells reactivate telomerase. Judith Stoffer View Media
Automated Worm Sorter - 4
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Georgia Tech associate professor Hang Lu holds a microfluidic chip that is part of a system that uses artificial intelligence and cutting-edge image processing to automatically examine large number of Georgia Tech/Gary Meek View Media
X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor 1
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X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor. Markus A. Seeliger, Stony Brook University Medical School and David R. Liu, Harvard University View Media
Single-cell “radios” video
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Individual cells are color-coded based on their identity and signaling activity using a protein circuit technology developed by the Coyle Lab. Scott Coyle, University of Wisconsin-Madison. View Media
Biofilm formed by a pathogen
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A biofilm is a highly organized community of microorganisms that develops naturally on certain surfaces. Scott Chimileski, Ph.D., and Roberto Kolter, Ph.D., Harvard Medical School. View Media
Sponge
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Many of today's medicines come from products found in nature, such as this sponge found off the coast of Palau in the Pacific Ocean. Phil Baran, Scripps Research Institute View Media
Mitochondria and endoplasmic reticulum
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A computer model shows how the endoplasmic reticulum is close to and almost wraps around mitochondria in the cell. The endoplasmic reticulum is lime green and the mitochondria are yellow. Bridget Wilson, University of New Mexico View Media
Electrostatic map of the adeno-associated virus
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The new highly efficient parallelized DelPhi software was used to calculate the potential map distribution of an entire virus, the adeno-associated virus, which is made up of more than 484,000 atoms. Emil Alexov, Clemson University View Media
Cryo-ET cross-section of the Golgi apparatus
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On the left, a cross-section slice of a rat pancreas cell captured using cryo-electron tomography (cryo-ET). On the right, a 3D, color-coded version of the image highlighting cell structures. Xianjun Zhang, University of Southern California. View Media
Life of an AIDS virus (with labels and stages)
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HIV is a retrovirus, a type of virus that carries its genetic material not as DNA but as RNA. Crabtree + Company View Media
