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Structure of heme, side view
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Molecular model of the struture of heme. Heme is a small, flat molecule with an iron ion (dark red) at its center. Rachel Kramer Green, RCSB Protein Data Bank View Media
Seeing signaling protein activation in cells 01
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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
Human opioid receptor structure superimposed on poppy
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Opioid receptors on the surfaces of brain cells are involved in pleasure, pain, addiction, depression, psychosis, and other conditions. Raymond Stevens, The Scripps Research Institute View Media
X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor 6
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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
Enzymes convert subtrates into products (with labels)
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Enzymes convert substrates into products very quickly. See image 2521 for an unlabeled version of this illustration. Crabtree + Company View Media
Life of an AIDS virus
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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
Snowflake DNA origami
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An atomic force microscopy image shows DNA folded into an intricate, computer-designed structure. The image is featured on Biomedical Beat blog post Cool Images: A Holiday-Themed Collection. Hao Yan, Arizona State University View Media
Cryo-electron microscopy revealing the "wasabi receptor"
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The TRPA1 protein is responsible for the burn you feel when you taste a bite of sushi topped with wasabi. Jean-Paul Armache, UCSF View Media
H1 histamine receptor
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The receptor is shown bound to an inverse agonist, doxepin. Raymond Stevens, The Scripps Research Institute View Media
Fruit fly spermatids
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Developing spermatids (precursors of mature sperm cells) begin as small, round cells and mature into long-tailed, tadpole-shaped ones. Lacramioara Fabian, The Hospital for Sick Children, Toronto, Canada View Media
Cysteine dioxygenase from mouse
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Model of the mammalian iron enzyme cysteine dioxygenase from a mouse. Center for Eukaryotic Structural Genomics, PSI View Media
Cas4 nuclease protein structure
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This wreath represents the molecular structure of a protein, Cas4, which is part of a system, known as CRISPR, that bacteria use to protect themselves against viral invaders. Fred Dyda, NIDDK View Media
Nucleosome
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Like a strand of white pearls, DNA wraps around an assembly of special proteins called histones (colored) to form the nucleosome, a structure responsible for regulating genes and condensing DNA strand Karolin Luger, Colorado State University View Media
A Growing Bacterial Biofilm
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A growing Vibrio cholerae (cholera) biofilm. Cholera bacteria form colonies called biofilms that enable them to resist antibiotic therapy within the body and other challenges to their growth. Jing Yan, Ph.D., and Bonnie Bassler, Ph.D., Department of Molecular Biology, Princeton University, Princeton, NJ. View Media
Zinc finger
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The structure of a gene-regulating zinc finger protein bound to DNA. Jeremy M. Berg, National Institute of General Medical Sciences View Media
Ubiquitin-fold modifier 1 from C. elegans
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Solution NMR structure of protein target WR41 (left) from C. elegans. Northeast Structural Genomics Consortium View Media
Closeup of fluorescent C. elegans showing muscle and ribosomal protein
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Closeup of C. elegans, tiny roundworms, 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
Space-filling model of a cefotaxime-CCD-1 complex
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CCD-1 is an enzyme produced by the bacterium Clostridioides difficile that helps it resist antibiotics. Keith Hodgson, Stanford University. View Media
CRISPR
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RNA incorporated into the CRISPR surveillance complex is positioned to scan across foreign DNA. Cryo-EM density from a 3Å reconstruction is shown as a yellow mesh. NRAMM National Resource for Automated Molecular Microscopy http://nramm.nysbc.org/nramm-images/ Source: Bridget Carragher View Media
Aldolase
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2.5Å resolution reconstruction of rabbit muscle aldolase collected on a FEI/Thermo Fisher Titan Krios with energy filter and image corrector. National Resource for Automated Molecular Microscopy http://nramm.nysbc.org/nramm-images/ Source: Bridget Carragher View Media
VDAC video 02
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This video shows the structure of the pore-forming protein VDAC-1 from humans. Gerhard Wagner, Harvard Medical School View Media
RNase A (1)
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A crystal of RNase A protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View Media
Heat shock protein complex from Methanococcus jannaschii
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Model based on X-ray crystallography of the structure of a small heat shock protein complex from the bacteria, Methanococcus jannaschii. Berkeley Structural Genomics Center, PSI-1 View Media
Trp_RS - tryptophanyl tRNA-synthetase family of enzymes
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This image represents the structure of TrpRS, a novel member of the tryptophanyl tRNA-synthetase family of enzymes. View Media
Bacterial ribosome assembly
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3D reconstructions of two stages in the assembly of the bacterial ribosome created from time-resolved cryo-electron microscopy images. Ribosomes translate genetic instructions into proteins. Joachim Frank, Columbia University. View Media
Insulin and protein interact in pancreatic beta cells
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A large number of proteins interact with the hormone insulin as it is produced in and secreted from the beta cells of the pancreas. William E. Balch, The Scripps Research Institute View Media
Phenylalanine tRNA molecule
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Phenylalanine tRNA showing the anticodon (yellow) and the amino acid, phenylalanine (blue and red spheres). Patrick O'Donoghue and Dieter Soll, Yale University View Media
Transient receptor potential channel TRPV5
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A 3D reconstruction of a transient receptor potential channel called TRPV5 that was created based on cryo-electron microscopy images. Vera Moiseenkova-Bell, University of Pennsylvania. View Media
Protective membrane and membrane proteins of the dengue virus visualized with cryo-EM
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Dengue virus is a mosquito-borne illness that infects millions of people in the tropics and subtropics each year. Like many viruses, dengue is enclosed by a protective membrane. Hong Zhou, UCLA View Media
Himastatin, 360-degree view
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A 360-degree view of the molecule himastatin, which was first isolated from the bacterium Streptomyces himastatinicus. Himastatin shows antibiotic activity. Mohammad Movassaghi, Massachusetts Institute of Technology. View Media
Chemokine CXCR4 receptor
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The receptor is shown bound to a small molecule peptide called CVX15. Raymond Stevens, The Scripps Research Institute View Media
Sheep hemoglobin crystal
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A crystal of sheep hemoglobin protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View Media
Network Map
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This network map shows the overlap (green) between the long QT syndrome (yellow) and epilepsy (blue) protein-interaction neighborhoods located within the human interactome. Seth Berger, Mount Sinai School of Medicine View Media
Protein map
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Network diagram showing a map of protein-protein interactions in a yeast (Saccharomyces cerevisiae) cell. This cluster includes 78 percent of the proteins in the yeast proteome. Hawoong Jeong, KAIST, Korea View Media
Cell Nucleus and Lipid Droplets
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A cell nucleus (blue) surrounded by lipid droplets (yellow). James Olzmann, University of California, Berkeley View Media
Beaded bacteriophage
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This sculpture made of purple and clear glass beads depicts bacteriophage Phi174, a virus that infects bacteria. It rests on a surface that portrays an adaptive landscape, a conceptual visualization. Holly Wichman, University of Idaho. (Surface by A. Johnston; photo by J. Palmersheim) 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
Nicotinic acid phosphoribosyltransferase
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Model of the enzyme nicotinic acid phosphoribosyltransferase. Berkeley Structural Genomics Center, PSI View Media
Himastatin and bacteria
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A model of the molecule himastatin overlaid on an image of Bacillus subtilis bacteria. Mohammad Movassaghi, Massachusetts Institute of Technology. View Media
A dynamic model of the DNA helicase protein complex
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This short video shows a model of the DNA helicase in yeast. This DNA helicase has 11 proteins that work together to unwind DNA during the process of copying it, called DNA replication. Huilin Li, Stony Brook University View Media
Plastic-eating enzymes
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PETase enzyme degrades polyester plastic (polyethylene terephthalate, or PET) into monohydroxyethyl terephthalate (MHET). Amy Wu and Christine Zardecki, RCSB Protein Data Bank. View Media
Atomic Structure of Poppy Enzyme
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The atomic structure of the morphine biosynthetic enzyme salutaridine reductase bound to the cofactor NADPH. The substrate salutaridine is shown entering the active site. Judy Coyle, Donald Danforth Plant Science Center View Media
The 26S proteasome engages with a protein substrate
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The proteasome is a critical multiprotein complex in the cell that breaks down and recycles proteins that have become damaged or are no longer needed. Andreas Martin, HHMI View Media
Nociceptin/orphanin FQ peptide opioid receptor
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The receptor is shown bound to an antagonist, compound-24 Raymond Stevens, The Scripps Research Institute View Media
HIV enzyme
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These images model the molecular structures of three enzymes with critical roles in the life cycle of the human immunodeficiency virus (HIV). Amy Wu and Christine Zardecki, RCSB Protein Data Bank. View Media
Protein from Arabidopsis thaliana
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NMR solution structure of a plant protein that may function in host defense. This protein was expressed in a convenient and efficient wheat germ cell-free system. Center for Eukaryotic Structural Genomics View Media
Structure of amyloid-forming prion protein
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This structure from an amyloid-forming prion protein shows one way beta sheets can stack. Douglas Fowler, University of Washington View Media
DNA replication origin recognition complex (ORC)
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A study published in March 2012 used cryo-electron microscopy to determine the structure of the DNA replication origin recognition complex (ORC), a semi-circular, protein complex (yellow) that recogni Huilin Li, Brookhaven National Laboratory View Media
RNA Polymerase II
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NIGMS-funded researchers led by Roger Kornberg solved the structure of RNA polymerase II. David Bushnell, Ken Westover and Roger Kornberg, Stanford University View Media
Abnormal, spiky fibroblast
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This is a fibroblast, a connective tissue cell that plays an important role in wound healing. Normal fibroblasts have smooth edges. Praveen Suraneni, Stowers Institute for Medical Research, Kansas City, Mo. View Media
