Helices Collection

DNA transcription, molecular model. Secondary structure of the enzyme RNA polymerase II synthesising a mRNA (messenger ribonucleic acid, lilac) strand from a DNA (deoxyribonucleic acid)

Secondary structure of proteins, artwork
Secondary structure of proteins, computer artwork. The secondary structure is the shape taken by the strands of proteins, which are biological polymers of amino acids

Nucleosome molecule, computer model. A nucleosome is a subunit of chromatin, the substance that forms chromosomes. It consists of a short length of DNA (deoxyribonucleic acid)

DNA molecule, artwork
DNA molecule. Computer artwork of a double stranded DNA (deoxyribonucleic acid) molecule amongst clouds of swirling gas. DNA is composed of two strands twisted into a double helix

Bacterial ribosome. Computer model showing the secondary structure of a 30S (small) ribosomal sub-unit from the bacteria Thermus thermophilus

HIV reverse transcription enzyme. Molecular models of the reverse transcriptase enzyme found in HIV (the human immunodeficiency virus)

Hepatitis C virus enzyme, molecular model
Hepatitis C virus enzyme. Molecular model of a genetic enzyme from the Hepatitis C virus. This enzyme is called HC-J4 RNA polymerase

Interferon molecule. Computer model showing the secondary structure of a molecule of interferon. Interferons are proteins produced by white blood cells as part of the immune response to invading

Z-DNA tetramer molecule C015 / 6557
Z-DNA (deoxyribonucleic acid) tetramer, molecular model. DNA is composed of two strands twisted into a double helix. This is a tetramer of the molecule, containing four strands

Cholera toxin, molecular model
Cholera toxin. Molecular model of the secondary structure of cholera enterotoxin (intestinal toxin). The molecule consists of two subunits, A (top) and B (bottom)

DNA. Deoxyribonucleic acid, model

Parathyroid hormone molecule. Computer model showing the structure of parathyroid hormone (PTH), or parathormone. Atoms are colour-coded (carbon: dark grey, hydrogen: light grey, oxygen: red)

Spirochete bacteria, TEM
Spirochete bacteria, coloured transmission electron micrograph (TEM). Spirochetes are bacteria with helically coiled cells

Aerostat. Engraving in The Illustration, 1887

WORLD WAR II (1939-1945). A squad of British aircraft model SPITFIRE flying.(October 1939)

DNA 6-way junction, artwork C014 / 2587
DNA 6-way junction. Computer artwork of a synthetic assemblage of nucleic acids which are useful in the design of nanostructures

DNA 6-way junction, artwork C014 / 2585
DNA (deoxyribonucleic acid) cube, computer artwork. The DNA cube is formed from six different DNA strands. Each side of the cube is composed of a single circular DNA strand

Nucleosome molecule F006 / 9323
Nucleosome, molecular model. A nucleosome is a subunit of chromatin, the substance that forms chromosomes. It consists of a short length of DNA (deoxyribonucleic acid)

Nucleosome molecule F006 / 9314
Nucleosome, molecular model. A nucleosome is a subunit of chromatin, the substance that forms chromosomes. It consists of a short length of DNA (deoxyribonucleic acid)

DNA Holliday junction, molecular model F006 / 9285
DNA Holliday junction. Molecular model of a Holliday junction (centre) between homologous strands of DNA (deoxyribonucleic acid)

Nucleosome molecule F006 / 9235
Nucleosome, molecular model. A nucleosome is a subunit of chromatin, the substance that forms chromosomes. It consists of a short length of DNA (deoxyribonucleic acid)

Sucrose-specific porin molecule F006 / 9218
Sucrose-specific porin, molecular model. Porins are proteins that span cell membranes and act as a channel through which specific molecules can diffuse

DNA 6-way junction, artwork C014 / 2586
DNA 6-way junction. Computer artwork of a synthetic assemblage of nucleic acids which are useful in the design of nanostructures

DNA 6-way junction, artwork C014 / 2588
DNA 6-way junction. Computer artwork of a synthetic assemblage of nucleic acids which are useful in the design of nanostructures. The background depicts a space star nebula

Leptin molecule C014 / 4907
Leptin molecule. Computer model showing the crystal structure of a molecule of the hormone leptin. Leptin is produced by adipose (fat) tissue

DNA supercoils, artwork
DNA supercoils. Computer artwork showing DNA (deoxyribonucleic acid) in three stages of supercoiling. Supercoiling is important in a number of biological processes

Enzyme catalysing DNA recombination C016 / 0725
Enzyme catalysing DNA recombination. Molecular model of the enzyme CRE (cyclization recombination) recombinase (blue and green) mediating the recombination of strands of DNA (deoxyribonucleic acid)

Enzyme catalysing DNA recombination C016 / 0724
Enzyme catalysing DNA recombination. Molecular model of the enzyme CRE (cyclization recombination) recombinase (blue and purple) mediating the recombination of strands of DNA (deoxyribonucleic acid)

Kinesin motor protein dimer C015 / 5921
Kinesin motor protein dimer, molecular model. Kinesin is a motor protein that moves along microtubule filaments in cells. It does so by forming a dimer, the heads of which walk along the microtubule

Kinesin motor protein dimer C015 / 5920
Kinesin motor protein dimer, molecular model. Kinesin is a motor protein that moves along microtubule filaments in cells. It does so by forming a dimer, the heads of which walk along the microtubule

Z-DNA tetramer molecule C015 / 6558
Z-DNA (deoxyribonucleic acid) tetramer, molecular model. DNA is composed of two strands twisted into a double helix. This is a tetramer of the molecule, containing four strands

Myoglobin molecule C015 / 5164
Myoglobin molecule. Computer model showing the structure of a myoglobin molecule. Myoglobin is a protein found in muscle tissue

Damaged DNA, conceptual artwork C013 / 9999
Damaged DNA, conceptual computer artwork

Human growth hormone molecule C013 / 9006
Human growth hormone. Molecular model of human growth hormone (hGH, yellow) bound to the extracellular domain of the human growth hormone binding protein (hGHBP)

RNA polymerase molecule C013 / 9005
RNA polymerase. Molecular model of RNA polymerase (yellow) transcribing a strand of mRNA (messenger ribonucleic acid, pink) from a DNA (deoxyribonucleic acid) template (orange and turquoise)

HIV reverse transcription enzyme C013 / 8998
HIV reverse transcription enzyme. Molecular model of the reverse transcriptase enzyme (orange and blue) found in HIV (the human immunodeficiency virus)

DNA Holliday junction complex C013 / 8888
DNA Holliday junction complex. Molecular model of the enzyme FLP recombinase in complex with a Holliday junction between homologous strands of DNA (deoxyribonucleic acid)

Erythropoietin molecule C013 / 8891
Erythropoietin molecule (EPO), molecular model. EPO is a glycoprotein that is produced by the kidneys in response to low blood oxygen levels

Birch pollen allergen molecule C013 / 8889
Birch pollen allergen molecule. Computer model showing the secondary structure of a Bet v 1L molecule. This molecule is responsible for allergic reactions to pollen from birch (Betula sp.) trees

Oxoguanine glycosylase complex C013 / 8886
Oxoguanine glycosylase complex. Computer model showing a molecule of human aG DNA repair glycosylase (right) bound to an DNA molecule (left)

Oxoguanine glycosylase complex C013 / 8884
Oxoguanine glycosylase complex. Computer model showing an 8-Oxoguanine glycosylase (OGG1) molecule (green) bound to a section of DNA (deoxyribonucleic acid, pink and blue)

TATA box-binding protein complex C013 / 8881
TATA box-binding protein complex. Molecular model showing a TATA box-binding protein (TBP) (purple) complexed with a strand of DNA (deoxyribonucleic acid, blue)

Potassium channel molecule C013 / 8878
Potassium channel molecule. Computer model showing the secondary structure of a KcsA potassium ion (K+) channel molecule from Streptomyces lividans bacteria

Bovine adrenodoxin molecules C013 / 8876
Bovine adrenodoxin molecules. Computer models showing the secondary structure of two molecules of adrenodoxin (adrenal ferredoxin) from a cow

Cytochrome b5 molecules C013 / 8874
Cytochrome b5 molecules. Computer artwork showing the secondary structure of two molecules of cytochrome B5. This protein plays a crucial role in metabolism in animals (including humans), fungi

Pit-1 transcription factor bound to DNA C013 / 8872
Pit-1 transcription factor bound to DNA. Molecular model showing pituitary-specific positive transcription factor 1 (Pit-1) (purple and yellow) bound to a strand of DNA (deoxyribonucleic acid)

Sucrose-specific porin molecule C013 / 8870
Sucrose-specific porin molecule. Moleuclar model showing the secondary and quaternary structure of a molecule of sucrose-specific porin

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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.