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The Cubic Lipid Phase and BacteriorhodopsinThe cubic lipid phase (CLP, aka LCP) is a novel type of membrane protein crystallization. It is composed of a bicontinuous surface (bilayer lipids, typically monoolein), of an average surface curvature of zero (minimal surface), that creates two mutually exclusive solvent compartments. A detergent-solubilized protein such as bacteriorhodopsin (BR, shown in magenta surrounding by 'green' detergent) is exposed to the CLP environment and integrates itself into the bilayer, most likely due to an energetic gain between membrane protein and lipid, versus membrane protein and detergent. The CLP-incorporated protein is believed to act as a reservoir for growing crystals. |
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The Structure of CollagenA collagenous fiber is a bundle of many macrofibrils. Each macrofibrilis in turn a bundle of numerous microfibrils. The microfibril is composed of many tropocollagen helices. Each of these assembled from three polypeptide chains twisted together.
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Viagra - Sildenafil citrateViagra, an oral therapy for erectile dysfunction, is the citrate salt of sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). This image conveys the simple nature of such a powerful drug tha |
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Synaptic Junction - Release of Acetylcholine to across the JunctionAn image of the synaptic junction, the place where a nerve impulse passes from on neuron to the next. In this example, the neuromuscular junction the motor neuron synapses with the targeted muscle cell. The action potential (electrical impulse) moves along the motor neuron carries the depolarization wave to the terminal buttons of the presynaptic neuron. Once at this terminal, depolarization at the junction causes the release of acetylcholine (in red) at the presynaptic vesicle.
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Blood CirculationShown is a still image from an animation of blood flow in blood vessel of a normal and healthy individual. |
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The DNA within. the Visible ChromosomeAn idealized representation of a chromosome with an overexagerated molecule of DNA (double-helix) shown inside.
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Fibrous MusclesA proof of concept illustration of muscles to illustrate displacement mapping methods for modeling of anatomy. |
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High Resolution Electron DensityVisualization of the electron density of a protein molecule. The "chicken-wire" cage represents a minimal surface that is contoured at a desired "sigma" level. |
Autoantigenic epitopes of Molecule XThis is a view of an autoantigen (self-antigen), specifically a protein autoantigen that mediates disease in patients having mutations in the gene that produces this molecule. A the protein level, the mutations give rise to conformation changes in the protein that reveal an otherwise cryptic epitope to antibody binding. |
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GoodpastureGoodpasture's Syndrome is a form of rapidly progressive glomerulonephritis (inflammation of the kidney glomeruli) involving progressive decrease in kidney function, accompanied by a cough with bloody sputum.
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Antibodies Measured UpAntibodies are typically represented by a "Y"-shaped diagram. The two arms of the Y represent the epitope-binding regions. Antibodies are also generally believed to be 'small'. Shown here is an isosurface contour plot of an antibody (crystal structure, at the top) and a ~180 KDa collagen NC1 hexamer (bottom). |
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Serotonin ReceptorSerotonin (5-hydroxytryptamine, 5-HT) is unique among the monoamines in that its effects are felt by as many as 13 distinct heptahelical, G-protein-coupled receptors (GPCRs) and one ligand-gated ion channel (or more). These receptors are divided into seven distinct classes (5-HT(1) to 5-HT(7)) largely on the basis of their structural and operational characteristics.
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Serotonin Transporter (5-HT)Findings suggest that the serotonin transporter (5-HT) might be linked to both neuroticism and sexual behaviour as well as to obsessive-compulsive disorder (OCD). Here is represented a conceptualized structure of the molecule based on scientific findings. A transporter protein found in the plasma membrane of serotonergic neurons is responsible for re-uptake of the transmitter. The serotonin transporter is a carrier of serotonin molecules across the biological membrane. Transporters undergo conformational changes and move one or more molecules per "cycle", unlike channels that stay open or closed, thus allowing floods of molecules to move across bilayers membranes. The serotonin transporter (SERT) resembles other biogenic amine transporters (i.e. norepinephrine and dopamine transporters). The protein?s structure is composed of twelve transmembrane (TM) helices with an extracellular loop between TM helices 3 and 4. Both polypeptide termini are located within the cytoplasm and six putative phosphorylation sites (potential targets for protein kinase A and protein kinase C) exist in the same compartment. The areas important for selective serotonin (5-HT) affinity are localized within helices 1 through 3 and helices 8 through 12. A binding site for 5-HT is believed to also be the target of selective inhibitors. |
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The NC1 Hexamer - Advanced Shading in Molecular IlA proof-of-concept study of advanced shading methods for molecular illustration. In this example, we have used the Type IV collagen NC1 trimer (obtained from the hexamer crystal structure) as our protein to illustrate. The shading of the CPK representation is soft with area shadows that accent the grooves and ridges on the protein surface. |
Barbarians at the GateA digital painting of the cloacked nature of viruses.Looking for more virus images and illustrations? Click here for more pictures of virii. |
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The Cubic Lipid Phase (aka. Lipid cubic phase, LThe cubic lipid phase is, of many things, a means to crystallize membrane proteins.
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The Bacteriorhodopsin D85S MutantCover of the X issue of the Journal of Molecular Biology. The D85S mutant is unique in that its point mutation resulting in the loss of the Schiff Base counterion allows it to pump anions in a direction opposite of proton flow in native BR. |
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Viral Assault of the CellA simplified view of viral invasion of a host cell. The viruses (shown in red) bind to the host cell (blue) via receptor binding (cellular protrusions). Once bound, the virus is internalized and its nucleic acid is realized to initiate its reproductive cycle.Looking for more virus images and illustrations? Click here for more pictures of virii. |
DecipherThe human genome is known, comprised of billions of DNA "units", the nucleotides of our blueprint. Illustration represents the underlying properties of this unique information molecule. |
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MechanoviralWithin the theme of nanotechnology, this piece represents the "industrialization" of viruses. While being more artistically liberated than other technically accurate works within the Symmation gallery, this piece conveys what does not exist. Science fiction of sorts....Looking for more virus images and illustrations? Click here for more pictures of virii. |
SARS Avian Influenza Virus - First Pictures!New Symmation SERIES: Avian Influenza/Flu
Influenza viruses that infect birds are called ? avian influenza viruses.? Only influenza A viruses infect birds. All known subtypes of influenza A virus can infect birds. However, there are substantial genetic differences between the subtypes that typically infect both people and birds. Within subtypes of avian influenza viruses there also are different strains (described in ?Strains?).Looking for more virus images and illustrations? Click here for more pictures of virii. |
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C-Reactive Protein's role in heart disease - Molecular graphics, illustration, picture stockResearchers have recently reported that a protein produced by the body during inflammation is a bigger cause of heart disease than cholesterol.
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Pancreas-Derived Multipotent ProgenitorPancreas-Derived Multipotent Progenitor (PMP) colonies produce cell types of pancreatic and neural lineage. PMP colonies proliferate from single pancreatic precursors and not by cell aggregation. This illustration was produced for the Beta Cell Biology Consortium to illustrate a synopsis article on PMP's. |
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Type IV Collagen DisassemblyIn the (345)2 Type IV collagen NC1 hexamer, dissociation can occur via two pathways. Either monomers or dimers are formed, the latter requiring cross-protomer covalent bonds.
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Emerging Foes - virus vs. ManMarbug, ebola, avian, influenza - these are just some of the viruses that threaten Man.Looking for more virus images and illustrations? Click here for more pictures of virii. |
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Molecular Animation of Phosphodiesterase type 5 (PDE5) Binding / Docking to ViagraThe phosphodiesterase type 5 inhibitor, Viagra TM (Sildenafil), is shown to bind to phosphodiesterase type 5 (PDE5).
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Molecular Animation of DNA - Information by AtomsMolecular animation of the information molecule - deoxyribonucleic acid, or DNA for short. The two strands of DNA are shown slowly rotating within solution, and ions are shown floating by.
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SARS Coronavirus Virion (CoV) - A Halo of SpikesThe coronavirus family is named after the corona, or halo, effect that is seen surrounding the virus when viewed by electron microscopy. The capsid protein of the virus is the spike, or S, glycoprotein. This protein interacts with the host receptor in order to bind to the cells and then fuse with the host cell membrane.Looking for more virus images and illustrations? Click here for more pictures of virii. |
Avian Flu Virus - SARS Cellular Infection - Picture, Image, IllustrationThe coronavirus family is named after the corona, or halo, effect that is seen surrounding the virus when viewed by electron microscopy. The capsid protein of the virus is the spike, or S, glycoprotein. This protein interacts with the host receptor in order to bind to the cells and then fuse with the host cell membrane.Looking for more virus images and illustrations? Click here for more pictures of virii. |
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The Development of the BlastocystA rendition of the development of an embryo from a one-cell (with somatic division occuring) to a early and late blastocyst. It is during this stage of development that the germ layers are produced. Furthermore, in the early blastocyst (blastomere) stage, embryonic stem cells are harvested from the inner cell mass (now shown).
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Adenovirus Binding to Cell Surface - Viral InfectionThe adenovirus is shown as its icosahedral morphology. The first event in the infection process is binding to the surface of the host cell. Shown on the host cell are channels and receptors. |
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Tuberculosis (TB for Tubercle Bacillus)Tuberculosis (abbreviated as TB for Tubercle Bacillus) is a common and deadly infectious disease caused by the mycobacterium Mycobacterium tuberculosis or Mycobacterium bovis, which most commonly affects the lungs (pulmonary TB) but can also affect the central nervous system, lymphatic system, circulatory system, genitourinary system, bones, joints, and even the skin. Shown here is a visual look at a TB culture. The media visually emulates a scanning electron micrograph with false color added. |
Hepatitis C Virus Image - The CDC Raises Awareness to Baby BoomersThe hepatitis-C virus is illustrated here, with its single-stranded RNA genome (helix: red for 5' and 3' NTR, white for structural proteins and red for non-structural proteins) protected by a protein-based and icosahedral capsid (blue), which in turn is wrapped within a lipid bilayer envelope (green) that contains key proteins E1 (yellow) and E2 (orange). The Hepatitis C virus E1 and E2 envelope proteins are the major players in all events required for virus entry into target cell. The CDC now recommends one-time test for hepatitis C for all baby boomers to check for infection. Hepatitis C is an infectious disease affecting primarily the liver, caused by the hepatitis C virus (HCV). The infection is often asymptomatic, but chronic infection can lead to scarring of the liver and ultimately to cirrhosis, which is generally apparent after many years. In some cases, those with cirrhosis will go on to develop liver failure, liver cancer or life-threatening esophageal and gastric varices. |
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Virion - Capsid StructureA view of an idealized virus particle, adopting icosahedral geometry. The protruding appendages illustrate the virus envelope proteins that bind to host cell receptors.Looking for more virus images and illustrations? Click here for more pictures of virii. |
Molecular Planetary GearPlanetary gears convert shaft power from one angular frequency to another. This model of a nano-motor was derived from K. Eric Drexler book, Nanosystems: Molecular Machinery, Manufacturing, and Computation.
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DNA Cleavage by Restriction Enzyme EcoRVThe restriction enzyme EcoR V is shown (colored in green and blue for each monomer in the homodimer). The DNA is colored in standard CPK colors and is shown as bound to the enzyme prior to cleavage. An animation of this process is currently in production, taking into account experimental evidence of the mechanism involved with this blunt-end |
The Mitochondrion - The Cellular Power PlantMitochondria are the providers of energy for cellular processes. These are membrane-bound organelles and, like the nucleus, have a double membrane. TUnlike the smooth outer membrane, the inner membrane is highly convoluted, forming folds called cristae. The cristae greatly increase the inner membrane surface area allowing for additonal energy production.
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Crystallographic Merohedral TwinningMerohedral twinning is a special case of crystallographic twinning where the lattices of twin (different) domains (in a single crystal) overlap in three dimensions. An effect is superimposable lattices when the rotational symmetry of the lattice exceeds the rotational symmetry of the space group.
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Fluid Mosaic Model of the Membrane BilayerA simplified view of the Fluid Mosaic Model of the lipid bilayer only is shown. The lipid tails (e.g. acyl, phytanyl, etc...) are the thin/long protrusions from the headgroup (the large spheroid moiety). |
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Venn Diagram of the 20 Natural Amino AcidsIn order to better understand the physico-chemical properties of amino acids, a Venn diagram clearly illustrates their common properties.
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Gravitational Waves in the Spacetime ContinuumNo, this is not Star Trek! This is really a theory on which active work is being pursued by astrophysicists. The existence of curved spacetime opens up the possibility that ripples (or gravitational waves) can exist in the spacetime continuum. Methods of detecting these could be from the observation of colliding black holes, supernova explosions and the black hole at the core of our Galaxy.
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Cellular Urban Life - Made to be BusyExtracellular environment can be considered as urban because of the density that cells pack against one another. Physiological as well as molecular requirements necessitate such a lifestyle.
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Viagra and Phosphodiesterase 5 ComplexHuman phosphodiesterase 5 (PDE5) is the protein that viagra binds to and inhits. Viagra has no direct relaxant effect that leads to penile erection but it enhances the effect of nitric oxide (NO) by inhibiting PDE5. PDE5 is responsible for the degradation of cyclic GMP (cGMP) in the penile corpus cavernosum. When sexual stimulus leads to an increase in cGMP levels, smooth muscles relax allowing for blood to flow into the penis. This piece illustrates the enzyme, PDE5, in a novel box-type ribbon diagram, with a smooth gradient over the length of the protein polypeptide chain. Viagra itself is shown as space-filling cartoon-type spheres. |
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Intracellular DensityThis illustration is an abstract representation of the intracellular milieu. The cytoplasm is a densely packed volume where organelles and molecules interact in highly complex pathways. Imagine the New York City New Year's celebration in Times Square with all those people. Now image expanding those people in the vertical. Imagine being to walk through such a 3D environment? Probably not, but cells are even more dense and molecules, organelles, and such are involved in a myriad of reactions... |
Cover Image - Current Opinions in Structural BiologyOne of our cover images, from our archives. The image was created for the journal Current Opinions in Structural Biology and displays the protein bacteriorhodopsin floating above a purple membrane sheet. |
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Exploring Gene Expression in the Mouse with MicroarraysAn illustrative look into the the use of microarray technology to better understand gene expression, or protein expression, in model organisms such as the mouse (Mus musculus).
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