beta sheet

(redirected from Beta sheets)
Also found in: Medical.
Related to Beta sheets: Beta strand, Alpha helices

beta sheet

n.
A secondary structure that occurs in many proteins and consists of two or more parallel adjacent polypeptide chains arranged in such a way that hydrogen bonds can form between the chains. Also called beta pleated sheet, pleated sheet.

[From beta-form, the form taken by a protein molecule after it has been stretched.]
References in periodicals archive ?
Extruding protein isolate reduced the amount of beta sheets by up to 8% and increased the number of beta turn structures.
Beta sheets consist of beta strands (also [beta]-strand) connected laterally by at least two or three backbone hydrogen bonds, forming a generally twisted, pleated sheet.
Through a process that remains mysterious, these bundles of beta sheets then turn dangerous.
Fudge compares the structure of the fibres to spider silk, which contains layers of crystalline planes called beta sheets separated by soft rubbery bits.
FAD domain consists five stranded parallel beta sheets (7-10, 31-35, 119-124, 155-158 and 322-324), three stranded antiparallel beta sheets (126-129, 134-138 and 149-152) and four alpha helices (14-26, 50-78, 92-116 and 335-349).
In a report published in the June Nature Structural & Molecular Biology, Wanker and his collaborators showed that a small molecule called (--)-epigallocatechin gallate (mercifully shortened to EGCG) can keep A-beta and alpha-synuclein from forming beta sheets.
a comovirus such as CPMV) having a beta-barrel structure at an immunogenically effective site, such as in a loop connecting beta sheets or at/near the C-terminus.
According to detailed X-ray analyses (4, 5), the 11 beta sheets that make up the barrel-shaped exterior of the GFP molecule are arranged helically around the barrel axis, with the barrel length somewhat greater than the diameter.
The mollusk proteins probably contain accordion-pleated structures known as beta sheets, but those are much more difficult to synthesize and work with, he says.
Although five amino acids seem to be enough to form beta sheets, "proteins have to do more than fold," says Baker.
Beta sheets, in contrast, are much less manageable.