蛋白質(zhì)生物信息學(xué)-數(shù)據(jù)庫(kù)-預(yù)覽頁(yè)
【正文】 coordinates, crystallization conditions, 3D structure neighbors puted using various methods, derived geometric data, structure factors, 3D images, and a variety of links to other resources. Folds? Mixed AlphaBeta Barrel Mainly Alpha Orthogonal Bundle Mainly Alpha Alpha/Alpha Barrel Images taken from CATH Since the two welldefined secondary structural units of helices and sheets are abundant in proteins, families of protein structures have been classified by a system based upon the alphahelix and beta sheet and their general topological properties. Each different topology may be considered as a fold. Current thinking suggests that there are a limited number of folds found in naturally occuring proteins.: AllAlpha folds, in which the secondary structure is almost exclusively alphahelical AllBeta folds, in which the secondary structure is posed almost exclusively of betasheets Alpha/Beta folds, consisting of helices and sheets arranged in betaalphabeta units, in which the betasheet strands are parallel Alpha+Beta folds, in which the helices and sheets tend to be spatially separated in different parts of the protein。CIF39。Exact Word Matc
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