Researchers have created a plant-based, sustainable, scalable material that could replace single-use plastics in many consumer products.
Materials Science
Jun 10, 2021
6
1690
(Phys.org)—Several fatal brain disorders, including Parkinson's disease, are connected by the misfolding of specific proteins into disordered clumps and stable, insoluble fibrils called amyloid. Amyloid fibrils are hard ...
Biochemistry
Nov 19, 2012
0
0
Clinical gene therapy may be one step closer, thanks to a new twist on an old class of molecules.
Biochemistry
Dec 15, 2011
0
0
Proteins are typically encoded by linear strands of messenger RNA (mRNA). These mRNA molecules are translated into polypeptide chains by ribosomes, with each ribosomal read-through of the mRNA generating a single, discrete ...
Biochemistry
Jul 12, 2013
0
0
How did catalytic organic polymers emerge on prebiotic Earth? Answering this essential question will unlock key understandings in the origin of life.
Biochemistry
May 11, 2023
0
1985
Living subjects are very complex systems and, at the same time, stunningly robust and accommodative. The secret of success are their proteins which build up the cells of the organisms, act as cleaners, messengers, transporter, ...
Biochemistry
Aug 14, 2012
9
1
The protein Hsp90 plays a significant role in the survival of cells that are exposed to stress. Researchers at the Technische Universitaet Muenchen (TUM) uncovered this protein's mode of operation some time ago - but now ...
Cell & Microbiology
Aug 23, 2010
0
0
Proteins have been around a lot longer than we have—as building blocks of biological evolution, our existence depends on them. And now, researchers at the Georgia Institute of Technology are applying a 20th-century theoretical ...
Evolution
Mar 7, 2023
0
70
Nanopore technology, which is used to sequence DNA, is cheap, hand-held and works in the jungle and in space. The use of this technology to identify peptides or proteins is now a step closer. University of Groningen scientists ...
Biochemistry
Oct 16, 2017
0
5
(Phys.org)—Heidelberg molecular biologists have gained new insights into the function of so-called molecular chaperones in protein synthesis. The team headed by Dr. Günter Kramer and Prof. Dr. Bernd Bukau of the DKFZ-ZMBH ...
Cell & Microbiology
Aug 25, 2012
0
0
Peptides (from the Greek πεπτός, "digested" from πέσσειν "to digest") are short polymers of amino acid monomers linked by peptide bonds. They are distinguished from proteins on the basis of size, typically containing less than 50 monomer units. The shortest peptides are dipeptides, consisting of two amino acids joined by a single peptide bond. There are also tripeptides, tetrapeptides, etc. Amino acids which have been incorporated into a peptide are termed "residues"; every peptide has a N-terminus and C-terminus residue on the ends of the peptide (except for cyclic peptides). A polypeptide is a long, continuous, and unbranched peptide. Proteins consist of one or more polypeptides arranged in a biologically functional way and are often bound to cofactors, or other proteins.
The size boundaries which distinguish peptides, polypeptides, and proteins are arbitrary. Long peptides such as amyloid beta can be considered proteins, whereas small proteins such as insulin can be considered peptides.
This text uses material from Wikipedia, licensed under CC BY-SA
