Secondary Structure Collection (page 3)

Erythropoietin hormone complex C016 / 4461
Erythropoietin hormone complex. Computer model showing the secondary structure of a molecule of the human hormone Erythropoietin (EPO), complexed with an erythropoetin receptor molecule

Erythropoietin hormone complex C016 / 4458
Erythropoietin hormone complex. Computer model showing the secondary structure of a molecule of the human hormone Erythropoietin (EPO), complexed with an erythropoetin receptor molecule

Erythropoietin hormone complex C016 / 4451
Erythropoietin hormone complex. Computer model showing the secondary structure of a molecule of the human hormone Erythropoietin (EPO), complexed with an erythropoetin receptor molecule

Neuropeptide Y neurotransmitter molecule C014 / 0013
Neuropeptide Y neurotransmitter molecule. Molecular model showing the structure of the neurotransmitter neuropeptide Y (NPY)

B19 parvovirus capsid protein, molecular model. This protein forms part of the capsid (protein shell) of parvovirus B19, one of only a few parvoviruses that infect humans

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)

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)

Erythropoietin hormone complex. Computer model showing the secondary structure of a molecule of the human hormone Erythropoietin (EPO), complexed with an erythropoetin receptor molecule

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

Tumour suppressor protein molecular model C013 / 7914
Tumour suppressor protein. Molecular model of the tumour suppressor protein p53 (blue, green and orange) bound to a molecule of DNA (deoxyribonucleic acid, yellow and pink)

DNA polymerase molecule C013 / 7909
DNA polymerase. Molecular model of a molecule of DNA polymerase (blue) replicating a strand of DNA (deoxyribonucleic acid, pink and turquoise). The secondary structure of the DNA polymerase is shown

HIV antibody therapy, molecular model C013 / 7908
HIV antibody therapy. Molecular model of the interaction of the HIV surface protein gp120 (yellow, bottom right) as it interacts with a human white blood cell surface protein (CD4, green)

Glycated haemoglobin molecule C013 / 7781
Glycated haemoglobin molecule. Computer model of a glycated haemoglobin molecule. The alpha and beta subunits of the haemoglobin are blue and pink, and the iron-containing haem groups are grey

Glycated haemoglobin molecule C013 / 7779
Glycated haemoglobin molecule. Computer model showing a glucose molecule (centre) bound to a molecule of haemoglobin. The alpha and beta subunits of the haemoglobin are blue and pink

Heterotrimeric G protein complex C013 / 7186
Heterotrimeric G protein complex, molecular model showing secondary structure. Also called the large G proteins, these activate enzymes and metabolic pathways

Vitamin B12 transport protein C013 / 7184
Vitamin B12 transport protein, molecular model showing secondary structure. This receptor protein, known as BTUB, is from the Escherichia coli bacterium

FKBP52 immunoregulation enzyme C013 / 7182
FKBP52 immunoregulation enzyme, molecular model showing secondary structure. This protein, encoded by the human FKBP4 gene, is a type of enzyme called a prolyl isomerase

Escherichia coli heat-labile enterotoxin C013 / 7180
Escherichia coli heat-labile enterotoxin, molecular model showing secondary structure. This is one of several proteins produced by pathogenic E. coli bacteria in the intestines

Bacteriophage MS2 capsid protein C013 / 7181
Bacteriophage MS2 capsid protein, molecular model showing secondary structure. This protein forms part of the capsid (protein shell) of MS2

Nitrogen-fixing molybdenum iron enzyme C013 / 7176
Nitrogen-fixing molybdenum iron enzyme, molecular model showing secondary structure. This protein is a nitrogen fixation enzyme (nitrogenase)

Human prion precursor protein C013 / 7178
Human prion precursor protein, molecular model showing secondary structure. The human prion protein (hPrP) is a prion precursor

Fatty acid dehydrogenase enzyme C013 / 7175
Fatty acid dehydrogenase enzyme, molecular model showing secondary structure. This is short chain 3-hydroxyacyl CoA dehydrogenase (SCHAD)

Clostridium botulinum toxin fragment C013 / 7173
Clostridium botulinum toxin fragment, molecular model showing secondary structure. This binding domain fragment (BBHc), a hydrolase, is from botulinum neurotoxin type B

HIV-1 reverse transcriptase enzyme C013 / 7172
HIV-1 reverse transcriptase enzyme, molecular model showing secondary structure. This protein is an enzyme that mediates the copying of genetic information

DNA recombination, molecular model
DNA recombination. Molecular model of a Holliday Junction, a moving point of contact between two DNA (deoxyribonucleic acid)

DNA loop, molecular model
DNA loop. Theoretical molecular model of a loop structure for DNA in its chromatin form. DNA (deoxyribonucleic acid) is a helical molecule (here the helix itself forms a circular loop)

Mouse chromatin protein, molecular model
Mouse chromatin protein. Molecular model of the structure of chromatin proteins found in mice. This is similar, but not identical, to the same proteins found in humans

RNA polymerase II molecule
RNA polymerase II. Computer model showing the secondary structure of the enzyme RNA polymerase II. The molecule comprises 12 subunits

Protein structure, artwork
Protein structure. Computer artwork of alpha helices (coils) and beta sheets (ribbons) of the secondary structure of a protein

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

PPAR regulatory molecule. Molecular model of peroxisome proliferator-activated receptor gamma (PPARG, pink) bound to a DNA (deoxyribonucleic acid) molecule (orange and green)

Antibiotic resistance enzyme molecule
Antibiotic resistance enzyme. Molecular model of the metallo-beta-lactamase protein fold, a part of metallo-beta-lactamase enzymes, in a bacterial cell

Photosystem I, molecular model
Photosystem I. Computer model showing the molecular structure of Photosystem I. Photosystems are protein enzyme complexes involved in photosynthesis

Viral DNA polymerase in complex with DNA. Computer model showing the active site of a phi29 DNA polymerase molecule (grey ribbons) in complex with DNA (deoxyribonucleic acid, yellow)

Tubulin dimer, molecular model
Tubulin. Molecular model of a tubulin dimer. The beta-tubulin subunit (gold) is at top and the alpha-tubulin subunit (green) is at bottom

Xanthine dehydrogenase molecule. Computer model showing the molecular structure of the Xanthine dehydrogenase (XDH) enzyme

Iron-hydrogenase molecule. Computer model showing the molecular structure of an iron-hydrogenase ([FE]-hydrogenase) enzyme from the Methanocaldococcus jannaschii archaeon

Fatty acid synthase in complex with NADP+. Computer model showing the molecular structure of fatty acid synthase (FAS) complexed with nicotinamide adenine dinucleotide phosphate (NADP+)

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Secondary structure refers to the intricate folding patterns that proteins and nucleic acids adopt, playing a crucial role in their functionality. In one captivating image, an anaesthetic inhibits an ion channel (C015/6718), highlighting how secondary structure impacts cellular processes. Another snapshot showcases DNA transcription, unveiling the molecular model of this essential process. Artwork depicting the secondary structure of proteins captivates our imagination as we marvel at the intricacy and beauty within each fold. The nucleosome molecule further emphasizes this complexity, showcasing how DNA wraps around histone proteins to form a compact structure. The bacterial ribosome stands tall as a testament to secondary structures' significance in protein synthesis. Meanwhile, the HIV reverse transcription enzyme reminds us of its vital role in converting viral RNA into DNA during infection. Molecular models provide insight into hepatitis C virus enzymes and interferon molecules—both critical players in disease progression and immune response modulation. Similarly, human growth hormone molecules hold immense importance for development and metabolism regulation. Exploring coagulation factor complex molecules (C014/0139) unravels mechanisms behind blood clotting—a process dependent on precise secondary structures working together seamlessly. Ghrelin hormone molecules intrigue us with their involvement in appetite regulation and energy balance maintenance. From anaesthetics influencing ion channels to hormones orchestrating bodily functions, understanding secondary structures unlocks countless mysteries within biological systems. These captivating images remind us of the intricate dance occurring at a microscopic level—the delicate folds dictating life's grand symphony.