Alpha helix - Wikipedia
网页An alpha helix (or α-helix) is a sequence of amino acids in a protein that are twisted into a coil (a helix). The alpha helix is the most common structural arrangement in the secondary structure of proteins.
Secondary Structure: α-Helices - Chemistry LibreTexts
网页An α-helix is a right-handed coil of amino-acid residues on a polypeptide chain, typically ranging between 4 and 40 residues. This coil is held together by hydrogen bonds between the oxygen of C=O on top coil and the hydrogen of N-H on the bottom coil.
Alpha-Helix and Beta-Sheet - Introduction, Types and Differences ...
网页Alpha-Helix and Beta-Pleated sheets are types of the secondary structure of the protein. They both are shaped by hydrogen bonding between the carbonyl O of one amino acid and the amino H of another. This section will discuss the protein, types of protein, and the primary and secondary protein structures, i.e. alpha-helix and beta-pleated sheets.
7.4: Secondary structure of proteins - Chemistry LibreTexts
网页2023年9月21日 · Define the secondary structure of proteins and understand the structural features of major secondary structures, including \(\alpha\)-helix, \(\beta\)-pleated sheet, random coil, and triple helix structures.
Secondary Structure (2˚) -- Alpha Helices - University of Vermont
网页An alpha helix is an element of secondary structure in which the amino acid chain is arranged in a spiral. The kinemage linked above shows an individual alpha helix, viewed from the N-terminal end to resemble the "helical wheel" (see figure below).
Alpha Helix - an overview | ScienceDirect Topics
网页Alpha helix is one of the most common secondary structures of peptides and proteins. It is a right handed coil or spiral conformation, where each N H group in the backbone donates a hydrogen bond to the backbone C O group of the amino acid four residues earlier.
Alpha Helix - Online Tutor, Practice Problems & Exam Prep
网页The alpha helix is a type of secondary protein structure. This is a type of secondary structure where the protein backbone takes on a coiled conformation. It has a coiled periodic spiral-like conformation like the ones that you've seen and you're already familiar with from your previous courses.
How the α-helix got its name | Nature Reviews Molecular Cell …
网页2022年1月24日 · Egli and Zhang recount what the original name was, why it was changed and what is between the alpha helix and the DNA double helix.
Stretching an Alpha Helix - MIT
网页The alpha helix is a secondary structure in proteins. This means that it results from the folding of a single amino acid chain. Hydrogen bonds form between segments of the chain, creating this folded morphology. Specifically, the amine groups in the amino acid backbone bond with a carbonyl group.
A closer look into the α-helix basin | Scientific Reports - Nature
网页2016年12月5日 · α-Helices are the most abundant structures found within proteins and play an important role in the determination of the global structure of proteins and their function.