Immunology

Study identifies viral peptides critical to natural HIV control

Investigators at the Ragon Institute of MGH, MIT and Harvard have used a novel approach to identify specific amino acids in the protein structure of HIV that appear critical to the ability of the virus to function and replicate. ...

Cancer

Major step towards individual cancer immunotherapy

Medicine has great hopes for personalised cancer immunotherapy. The idea is to have a vaccine prompt the immune system to fight a tumour. Scientists at ETH Zurich have developed a method that allows them to determine which ...

Cancer

Glowing tumors show scientists where cancer drugs are working

Experimenting with mice, Johns Hopkins researchers report they have successfully used positron emission tomography (PET) scans to calculate in real time how much of an immunotherapy drug reaches a tumor and what parts of ...

Diseases, Conditions, Syndromes

Peptide shows promise for protecting kidneys from nephritis

A synthetic peptide appears to directly disrupt the destructive inflammation that occurs in nephritis, enabling the kidneys to better recover and maintain their important functions, investigators report.

Medical research

Dental enamel can't regenerate, right? Think again

Dental enamel is tricky stuff. Even though it's the body's hardest material, if it wears away from cavities, acidic food or drinks or overbrushing, it doesn't regenerate.

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Peptide

Peptides (from the Greek πεπτίδια, "small digestibles") are short polymers formed from the linking, in a defined order, of α-amino acids. The link between one amino acid residue and the next is known as an amide bond or a peptide bond.

Proteins are polypeptide molecules (or consist of multiple polypeptide subunits). The distinction is that peptides are short and polypeptides/proteins are long. There are several different conventions to determine these, all of which have caveats and nuances.

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