| 词汇 | polypeptide |
| 释义 | polypeptide noun[ C ] chemistry specializeduk /ˌpɒl.iˈpep.taɪd/ us /ˌpɑː.liˈpep.taɪd/ one of a group of polymers made from a chain of amino acids多肽 Chemistry: types of chemical acid salt aerogel albumin alkali metal alkaline alkaloid antioxidant carbohydrate homologous series inorganic isopropanol ketone lectin melamine monosaccharide mothball propellant saline soluble sulphide Examples of polypeptidepolypeptide The presence of the cofactor is sometimes essential for the polypeptide to fold. Thus, a polypeptide folding in this encapsulated environment simply has no other species with which to form a multimolecular aggregate. Reactions are, therefore, non-adiabatic and the essential electronic interaction between redox cofactors must be mediated by the polypeptide matrix. These possibilities are not mutually exclusive, of course, and both could be operative for any given substrate polypeptide. The diverse mechanisms by which cosolvents affect polypeptide conformation are beginning to be understood. Prospects for resolving the conformations and fate of polypeptide in the chaperonin reaction 251 11. Biological polymers such as a polypeptide chain are heteropolymers where each segment is different. The large oligosaccharide is transferred en bloc to the nascent polypeptide chain, which is transported across or inserted into the rough endoplasmic reticulum membrane. This is associated with the release of polypeptide from the apical binding surface into the cavity and the commencement of folding. In a cross-b motif, the hydrogen bonding capacity of the polypeptide backbone can be fully utilized. This reinforces the concept that the immune system of each host recognizes different polypeptide bands. The force field is then refined for a given polypeptide structure in order to match the calculated frequencies with the experiment. The wide association of the cross- structure seems to indicate that this molecular structure is a stable and accessible conformation for many polypeptide chains. Renaturation of polypeptide chains to the original or near-original shape may only be possible by such treatments as heating. It appears, at least in the case of spinach ferredoxin, that cluster insertion is a prerequisite for the polypeptide to fold properly. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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