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| Description: a) Molecules of sickle-cell Hb tend to aggregate, forming long fibers. b) An electron micrograph of one sickle-cell fiber. c) A computer-graphic depiction of one fiber. A schematic model of fiber formation. DeoxyHb S molecules lock together to form a two-stranded cluster because Val 6 in the b chain of one Hb molecule fits into a pocket in an adjacent molecule. Interaction of these two-stranded structures with one another produces the multistrand fibers shown in (a) and (b). Picture Stats: Views: 248 Filesize: 92.11kB Height: 450 Width: 588 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=34135 |