random coil


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random coil

[′ran·dəm ′kȯil]
(physical chemistry)
Any of various irregularly coiled polymers that can occur in solution. Also known as cyclic coil.
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We found that the percentage of random coil structures was positively correlated with PS and digestibility, possibly because this structure is strong and flexible and has fewer hydrogen bonds that can impede enzyme access, which allows proteins to be readily degraded.
Protein secondary structures such as [alpha]-helices, [beta]-sheets, and random coils as well as [alpha]-helix-to-[beta]-sheet ratios in soybean meal and corn DDGS, and the relative quantitative amounts of [alpha]-helices and [beta]-sheets in feather meal were inconsistent with earlier findings (Yu et al.
1] (amide III, C-N stretching), attributed to predominant random coil (water-soluble) form of SF [4-6].
Structural assignment (a) Experimental 2[degrees] 3[degrees] technique structure structure SE-HPLC NA (b) Extended, nonglobular Sedimentation equilibrium ultracentrifugation NA NA CD Random coil, no helix NA Structural assignment (a) Experimental 4[degrees] Coiled-coil technique structure SE-HPLC NA NA Sedimentation equilibrium ultracentrifugation Monomer, not trimer No CD NA No (a) 2[degrees] structure refers to helix, [beta]-sheet, or random coil content; 3[degrees] structure refers to the overall three-dimensional shape of the molecule; and 4[degrees] structure refers to the putative state of association of individual molecules.
The molecule chains of random coil configuration had a stronger damping effect than that of extending orientation configu-ration.
3]g/ml, based on the unperturbed dimension of UHPE random coil in solution.
The maximum attainable draw ratio ([lambda]) is assumed to be determined by the ratio of the extended-chain length to the root mean square end-to-end distance of an unperturbed random coil [4-7].
If the random coil is greater than about twice the long period, tie molecules will be formed during crystallization.
In an extensional flow, a random coil can be deformed to a much greater extent.
22% residues belonged to random coils according to PHD and GOR4 respectively.
DNA melting is the cooperative unwinding of the double-helical structure into single-stranded random coils.
Other ophio varieties have flower stalks, but they form wild and random coils or broad sweeping curls and arches rather than tight coils.