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A beta strand is a single chain of amino acids with a specific conformation, while a beta sheet is formed when two or more beta strands align and hydrogen bond with each other. Beta strands are the building blocks of beta sheets, which are a common secondary structure in proteins.
Alpha helix and beta pleated sheets both are held together with H bonds between carbonyl O and amino N. Alpha helix specifies with residues bind. Beta pleated sheets can happen between any 2 residues.
Stabilized by hydrogen bonds, hydrogen bonding between amides groups
Polypeptide secondary structures.
Beta sheets consist of beta strandsconnected laterally by at least two or three backbone hydrogen bonds, forming a generally twisted, pleated sheet.
A regular element of secondary structure in proteins, in which two or more extended strands of the polypeptide chain lie side by side (running either parallel or antiparallel), held together by a regular array of hydrogen bonds between backbone NH and C=O groups, to form a ridged planar surface. The amino-acid side chains alternately face to opposite sides of the sheet.
A beta-folded sheet is a secondary structure of a protein, which is the next level of molecular organization above the primary structure. It is formed by hydrogen bonding between adjacent segments of a polypeptide chain, creating a flat and elongated sheet-like structure.
The difference between a beta plus and beta minus particle is the electrical charge. The charges are equal, but opposite. The beta minus particle is an electron with a negative charge, while the beta plus particle is an anti-electron or positron with a positive charge.
The two types of secondary protein structure are alpha helix and beta sheet. In an alpha helix, the polypeptide chain is tightly coiled in a helical shape, while in a beta sheet, the polypeptide chain is folded into a sheet-like structure with hydrogen bonds between neighboring strands.
Hemoglobin does not contain beta sheets. It is a globular protein composed of four subunits - two alpha and two beta subunits in adults (hemoglobin A). Each subunit consists of alpha-helices, not beta sheets.