Helices Collection (page 9)

RNA polymerase from rabies virus, molecular model. This is a single subunit from an enzyme, involved in the replication of the rabies viruss RNA after it has infected a host cell

Interleukin-6, molecular model
Interleukin-6. Molecular model of the secondary structure of the cytokine protein interleukin-6. This protein is produced in the body and has a wide variety of functions in the immune system

Phosphofructokinase bacterial enzyme
Phosphofructokinase enzyme, molecular model. This enzyme is from the spirochaete bacteria Borrelia burgdorferi, which causes Lyme disease

Diphtheria toxin structure
Diphtheria toxin, molecular model. This model shows the toxin produced by the bacterium Corynebacterium diphtheriae, the cause of diphtheria

Hepatitis C virus RNA polymerase enzyme
Hepatitis C virus enzyme, molecular model. This protein, called NS5B, forms the active site of the viruss RNA-dependent RNA polymerase enzyme

Collagen fibre, molecular model. Collagen is a long structural protein, which usually takes the form of a triple helix known as tropocollagen

Parathyroid hormone, molecular model
Parathyroid hormone. Molecular model showing the primary structure (spheres) and secondary structure (coils) of parathyroid hormone (PTH), or parathormone

Protein from measles virus
Proteins from the measles virus, molecular model. A domain of the viruss P protein (upper, blue, green and yellow) is seen here in complex with part of the N protein (lower, red)

Phenylbutazone anti-inflammatory molecule
Phenylbutazone anti-inflammatory drug. Molecular model showing the secondary structure of the non-steroidal anti-inflammatory drug (NSAID) phenylbutazone

THG anabolic steroid and receptor
THG bound to receptor. Molecular model of a molecule of the anabolic steroid drug tetrahydrogestrinone (THG, ball-and-stick primary structure) bound to a human androgen receptor (secondary structure)

HIV antibody therapy. Molecular model of the interaction of the HIV surface protein gp120 (green, lower right) as it interacts with a human white blood cell surface protein (CD4, blue)

Cholesterol enzyme affected by a drug
Cholesterol enzyme being affected by a drug. Molecular model of the shape of the human enzyme Hmg-Coa reductase interacting (complexed) with the anti-cholesterol drug Fluvastatin (not seen)

HIV enzyme being affected by a drug. Molecular model of HIVs reverse transcriptase enzyme as it interacts with a drug (not seen)

Erythropoietin molecule bound to receptors. Computer model of a molecule of erythropoietin (EPO) (orange) bound to two extracellular EPO receptors (pink and purple)

Insulin hormone, molecular model
Insulin hormone. Molecular model of the bovine form of the hormone insulin, produced by the pancreas in mammals to aid the body in metabolising sugars

Insulin molecule
Insulin. Computer artwork of a molecule of insulin. Insulin is a hormone produced by the pancreas. It consists of two peptide chains, A (centre to right) and B (left)

Thrombin protein, secondary structure
Thrombin protein, computer model. Thrombin is a protein involved in the blood coagulation (clotting) process. It converts fibrinogen (a soluble plasma glycoprotein synthesised in the liver)

GAGA transcription factor molecule. Molecular model showing the primary (rods) and secondary (helices) structure of GAGA factor (green and blue)

Cytochrome P450 protein, molecular model. This protein plays a crucial role in metabolism in animals (including humans), fungi, plants and bacteria

Heterotrimeric G protein complex molecule. Computer model showing the secondary structure of a heterotrimeric G protein complex. Alpha-helices are red and beta sheets are yellow

Streptococcal protein G molecule
Streptococcal protein G. Computer model showing the primary (ball-and-stick) and secondary (alpha- helix, blue, and beta-sheets, purple) structures of Streptococcal protein G

Integration host factor and DNA. Computer model of integration host factor (IHF, centre) bound to a molecule of DNA (deoxyribonucleic acid, semi- circle). The secondary structure of IHF is shown

Human rhinovirus capsid proteins, molecular model. These are proteins from the capsid (outer protein coat) of rhinovirus 14. Rhinoviruses are responsible for causing about 50% of common colds

Haemagglutinin from bird flu virus, molecular model. This protein, H5, is found on the surface of the bird flu virus H5N1

FK506-binding protein molecule. Computer model showing the primary (rods) and secondary (alpha- helices, blue, and beta-sheets)

Lipase molecule. Computer model showing the secondary structure of lipase. Alpha-helices are blue and beta-sheets are purple

DNA polymerase Klenow fragment
Klenow fragment of DNA polymerase I. Computer model showing the secondary (alpha-helices and beta-sheets) and primary (ball-and-stick) structures of the Klenow, or large

Protein tyrosine phosphatase molecule. Computer model of the secondary structure of an intermediate form of protein tyrosine phosphatase. Beta-sheets are purple and alpha-helices are blue

Enzyme from a sulphur-reducing bacterium. Molecular model of the enzyme aldehyde oxidoreductase from the Desulfovibrio gigas sulphur-reducing bacterium

Yeast enzyme, molecular model
Yeast enzyme. Molecular model of an enzyme from Saccharomyces cerevisiae (Bakers yeast). This enzyme is 20S proteasome. A proteasome is a complex type of proteinase (protein-digesting enzyme)

Fibroblast growth factor receptor 2 (FGFR2). Molecular models of the secondary structure (top) and the tertiary structure (bottom) of FGFR2

Single stranded DNA-binding protein (SSBP). Molecular model showing the secondary and tertiary structures of a protein that binds to the single stranded DNA (deoxyribonucleic acid)

Nitrogenase protein, molecular model
Nitrogenase protein. Molecular model of the MoFe protein, one of two proteins (MoFe and Fe) that combine to form the enzyme nitrogenase

Aerostat. Engraving in The Illustration, 1887

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"Unraveling the Mysteries of Helices: Exploring the Intricate World of Molecular Structures" DNA Transcription Unveiled: Witness the intricate dance as DNA unravels and transcribes its genetic code, paving the way for life's blueprint. A Symphony in Proteins: Secondary structures adorned with helical motifs create a mesmerizing molecular model, showcasing nature's artistic prowess. Nucleosome Molecule - Nature's Genetic Sculptor: Behold the elegant architecture of nucleosomes, where DNA elegantly wraps around histone proteins forming a helical masterpiece. The Dance of Life: An artwork depicting a vibrant DNA molecule reveals its double-helix structure, symbolizing our very essence and genetic heritage. Bacterial Ribosome - The Protein Factory: Dive into the intricacies of bacterial ribosomes as they diligently translate genetic information into functional proteins through their complex helical framework. HIV Reverse Transcription Enzyme - Decoding Viral Secrets: Explore how this remarkable enzyme utilizes helical structures to reverse-transcribe viral RNA into infectious DNA, perpetuating HIV's stealthy invasion. Hepatitis C Virus Enzyme - Unmasking an Invisible Threat: Peer inside the molecular model of this cunning enzyme that hijacks human cells by employing intricate helices to replicate itself relentlessly. Interferon Molecule - Our Body's Defender: Discover how these mighty molecules employ their unique helical shape to activate our immune system against invading pathogens and protect us from harm. Z-DNA Tetramer Molecule C015/6557 – Unlocking New Dimensions in Genetics: Delve into the fascinating world of Z-DNA tetramers as they challenge conventional double-helical structures, offering new insights into gene regulation and potential therapeutic avenues. Cholera Toxin – A Deadly Ballet on a Molecular Stage.