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Polypeptide Collection

Polypeptide: The Building Blocks of Life From DNA transcription to molecular models, polypeptides play a crucial role in various biological processes

Background imagePolypeptide Collection: DNA transcription, molecular model

DNA transcription, molecular model

Background imagePolypeptide Collection: Myoglobin molecule C015 / 5702

Myoglobin molecule C015 / 5702
Myoglobin molecule. Computer model showing the structure of a myoglobin molecule

Background imagePolypeptide Collection: Parathyroid hormone molecule

Parathyroid hormone molecule. Computer model showing the structure of parathyroid hormone (PTH), or parathormone

Background imagePolypeptide Collection: Tetraubiquitin protein molecule F006 / 9326

Tetraubiquitin protein molecule F006 / 9326
Tetraubiquitin protein, molecular model. Ubiquitin is found in all eukaryotic cells. When a protein is damaged or old it will be tagged by several ubiquitin molecules

Background imagePolypeptide Collection: Gramicidin antibiotic molecule C015 / 5072

Gramicidin antibiotic molecule C015 / 5072
Gramicidin. Molecular model of the antibiotic gramicidin D, from the bacterium Bacillus brevis. This antibiotic is effective against Gram positive and Gram negative bacteria

Background imagePolypeptide Collection: Gramicidin antibiotic molecule C015 / 5071

Gramicidin antibiotic molecule C015 / 5071
Gramicidin. Molecular model of the antibiotic gramicidin D, from the bacterium Bacillus brevis. This antibiotic is effective against Gram positive and Gram negative bacteria

Background imagePolypeptide Collection: Myoglobin protein, molecular model C016 / 6575

Myoglobin protein, molecular model C016 / 6575
Myoglobin protein. Molecular model showing the structure of the myoglobin protein

Background imagePolypeptide Collection: Vasopressin hormone crystals, LM C016 / 8551

Vasopressin hormone crystals, LM C016 / 8551
Vasopressin hormone crystals, light micrograph taken with polarised light

Background imagePolypeptide Collection: Myoglobin molecule C015 / 5701

Myoglobin molecule C015 / 5701
Myoglobin molecule. Computer model showing the structure of a myoglobin molecule

Background imagePolypeptide Collection: Myoglobin molecule C015 / 5164

Myoglobin molecule C015 / 5164
Myoglobin molecule. Computer model showing the structure of a myoglobin molecule

Background imagePolypeptide Collection: Human growth hormone molecule C013 / 9006

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)

Background imagePolypeptide Collection: Glycated haemoglobin molecule C013 / 7781

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

Background imagePolypeptide Collection: Glycated haemoglobin molecule C013 / 7779

Glycated haemoglobin molecule C013 / 7779
Glycated haemoglobin molecule. Computer model showing a glucose molecule (centre) bound to a molecule of haemoglobin

Background imagePolypeptide Collection: Glycated haemoglobin molecule C013 / 7780

Glycated haemoglobin molecule C013 / 7780
Glycated haemoglobin molecule. Computer model showing a glucose molecule (centre) bound to a molecule of haemoglobin

Background imagePolypeptide Collection: Haemoglobin molecule

Haemoglobin molecule
Computer graphic representation of the haemoglobin molecule, the oxygen-carrying substance of human blood

Background imagePolypeptide Collection: Computer graphics of haemoglobin molecule

Computer graphics of haemoglobin molecule
Computer graphic representation of part of the haemoglobin molecule, the oxygen-carrying substance of human blood, showing its four polypeptide (protein) chains

Background imagePolypeptide Collection: Haemoglobin molecule, artwork

Haemoglobin molecule, artwork
Haemoglobin molecule. Computer artwork showing the molecular structure of haemoglobin, a metalloprotein that transports oxygen around the body in red blood cells

Background imagePolypeptide Collection: Glycogen phosphorylase, molecular model

Glycogen phosphorylase, molecular model. This is an enzyme involved in breaking down glycogen, the energy storage molecule involved in animal metabolism

Background imagePolypeptide Collection: Myoglobin molecule

Myoglobin molecule. Computer model showing the structure of a Myoglobin molecule

Background imagePolypeptide Collection: Immunoglobulin pentamer, artwork

Immunoglobulin pentamer, artwork
Immunoglobulin pentamer, computer artwork. Immunoglobulin (Ig) proteins, also known as antibodies, are gamma globulin proteins that are part of the mammalian immune system

Background imagePolypeptide Collection: Hantavirus inhibitor molecule

Hantavirus inhibitor molecule. Molecular model of a pentapeptide protein that blocks the entry of hantavirus particles to human cells

Background imagePolypeptide Collection: Enkephalin crystals, light micrograph

Enkephalin crystals, light micrograph
Enkephalin crystals, polarised light micrograph. Enkephalin is an endorphin found in the human brain

Background imagePolypeptide Collection: Insulin-like growth 1 factor molecule

Insulin-like growth 1 factor molecule
Insulin-like growth factor 1 molecule. Computer model showing the structure of a molecule of the hormone insulin-like growth factor 1 (IGF-1)

Background imagePolypeptide Collection: Insulin-like growth 2 factor molecule

Insulin-like growth 2 factor molecule
Insulin-like growth factor 2 molecule. Computer model showing the structure of a molecule of the hormone insulin-like growth factor 2 (IGF-2)

Background imagePolypeptide Collection: Corticotropin-releasing factor complex

Corticotropin-releasing factor complex
Corticotropin-releasing factor (CRF) complex

Background imagePolypeptide Collection: Cytidine deaminase, molecular model

Cytidine deaminase, molecular model
Cytidine deaminase. Computer model of the enzyme, activation-induced (cytidine) deaminase (AID)

Background imagePolypeptide Collection: Encephalin peptide

Encephalin peptide
Encephalin. Computer molecular graphic of part of a molecule of encephalin, a polypeptide found in the human brain

Background imagePolypeptide Collection: Human growth hormone, molecular model

Human growth hormone, molecular model
Human growth hormone. Molecular model showing the secondary structure of human growth hormone (hGH), a hormone produced in the anterior pituitary gland in the brain

Background imagePolypeptide Collection: Somatotropin hormone

Somatotropin hormone

Background imagePolypeptide Collection: Erythropoietin hormone

Erythropoietin hormone
Erythropoietin. Computer model of a molecule of the hormone erythropoietin. This is a glycoprotein that consists of a single-chain polypeptide of 165 amino acids

Background imagePolypeptide Collection: Myoglobin protein

Myoglobin protein
Myoglobin. Computer model of the protein myoglobin that contains the iron-containing haem group (not seen)

Background imagePolypeptide Collection: RNA-editing enzyme combined with RNA

RNA-editing enzyme combined with RNA

Background imagePolypeptide Collection: Leptin molecule

Leptin molecule. Computer model of a molecule of leptin, a protein produced by white fat cells in adipose tissue

Background imagePolypeptide Collection: Collagen fibre, molecular model

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

Background imagePolypeptide Collection: Parathyroid hormone, molecular model

Parathyroid hormone, molecular model
Parathyroid hormone


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Polypeptide: The Building Blocks of Life From DNA transcription to molecular models, polypeptides play a crucial role in various biological processes. Enkephalin crystals, as seen under a light micrograph, demonstrate the intricate structure and beauty of these peptides. The human growth hormone molecule and parathyroid hormone molecule showcase the diversity of polypeptides found within our bodies. Their unique structures enable them to perform specific functions essential for growth and calcium regulation. Tetraubiquitin protein molecule F006/9326 and gramicidin antibiotic molecules C015/5072 & C015/5071 highlight the versatility of polypeptides beyond human physiology. These molecules exhibit their significance in cellular processes like protein degradation and antimicrobial defense. Myoglobin protein's molecular model (C016/6575) reveals its role in oxygen storage within muscle tissues. Its compact structure allows efficient binding and release of oxygen during physical activity. Vasopressin hormone crystals (LM C016/8551) provide insight into how they can form complex crystal structures with remarkable stability. These formations aid in hormonal signaling throughout the body. Lastly, haemoglobin molecules exemplify one of the most well-known applications of polypeptides - transporting oxygen through our bloodstream. Their repetitive subunits create an efficient carrier system that ensures vital oxygen reaches every cell in our body. From DNA transcription to crystal formation they can fundamental components shaping life at a molecular level. Understanding their diverse roles helps unravel the complexity behind biological processes while appreciating their aesthetic appeal under microscopic examination.

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