| 词汇 | subunit |
| 释义 | subunit noun[ C ] uk /ˈsʌbˌjuː.nɪt/ us /ˈsʌbˌjuː.nɪt/ a part of a molecule, especially a molecule of protein分子的一部分;（尤指）蛋白分子的一部分 Physics: atoms, molecules & sub-atomic particles acceptor alpha particle anti-radical antilepton antimatter antineutrino beta decay beta particle hadron Higgs boson interatomic interelectronic interionic molecularly monatomic multi-molecular multiparticle muon positron relative atomic mass subunit | American Dictionarysubunit noun[ C ] us/ˈsʌbˌju·nət/ biology a part of a molecule, esp. a molecule of protein (= chemical in all living cells) Examples of subunitsubunit The large subunits are chloroplast encoded and are arranged as 4 dimers. Remodeling of alpha-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid receptor subunit composition in hippocampal neurons after global ischemia. A subunit vaccine consists of a part of the virus, typically a protein capable of generating a protective immune response in immunised persons. The other subunit combinations would also be sensitive to zinc, but to a lesser extent. The site of biological activity can be confined within each subunit, or it can be located at the interface between subunits. The nucleotide state of the catalytic centers together with the position of the subunit determines the conformation of the associated subunit. Assembly of the inhibitory glycine receptor: identification of amino acid sequence motifs governing subunit stoichiometry. All the axial structures are helical assemblies of subunit proteins and are therefore likely to have a central channel. When all subunits are activated, the channel is open. In this contribution, the possibility of observing these loops, as well as other possible subunits, in crystallized proteins will be investigated. Occasional immunolabeling was also found associated with heterochromatin, suggesting that some of the subunits may be localized to nuclear regions of less active chromatin. Despite their functional similarities, these two receptor subtypes can be distinguished pharmacologically and are assembled from different protein subunits. In neutron scattering the distances between pairs of deuterated subunits in large complexes can be determined in this way. The only essential feature is that there are two discrete relative dispositions of the subunits. However, since most channels are tetrameric and the voltage sensor in each subunit must activate, more than one transition is normally needed to describe activation. 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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