Researchers find new signaling systems in human cells

One-third of all approved drugs target the same family of receptors: the G-protein-coupled receptors (GPCRs). Now, researchers from the University of Copenhagen, along with two American labs, have expanded the known network ...

Were hot, humid summers the key to life's origins?

Uncovering how the first biological molecules (like proteins and DNA) arose is a major goal for researchers attempting to solve the origin of life. Today, chemists at Saint Louis University, in collaboration with scientists ...

Peptide hydrogels could help heal traumatic brain injuries

Traumatic brain injury (TBI)—defined as a bump, blow or jolt to the head that disrupts normal brain function—sent 2.5 million people in the U.S. to the emergency room in 2014, according to statistics from the U.S. Centers ...

A novel cellular process to engulf nano-sized materials

Nanometers are one billionth of a meter, a metric typically used to measure molecules and scientific building blocks not visible to the human eye. Materials of tens and/or several hundred nanometers in diameter have unique ...

'Catcher of the rye' method detects rye gluten proteins in foods

Gluten-free diets have been trendy for several years now, with adherents claiming that avoiding grains that contain the substance helps with weight loss or improves general health. However, for people with celiac disease, ...

A novel peptide to rapidly kill multidrug-resistant bacteria

Researchers at the Indian Institute of Science (IISc) have designed an antimicrobial peptide (AMP) that can effectively and quickly kill a notorious multidrug-resistant bacterium called Acinetobacter baumannii.

Researchers tune nanowire properties with peptide 'decorations'

In the latest paper from the Geobacter Lab led by microbiologist Derek Lovley at the University of Massachusetts Amherst, he and colleagues report "a major advance" in the quest to develop electrically conductive protein ...

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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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