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单词 keratin
释义
keratin
noun[CorU]
biologyspecialized
uk
/ˈker.ə.tɪn/us
/ˈker.ə.tɪn/
astrongnaturalprotein, which is themainsubstancethatformshair,nails,hooves,horns,feathers, etc.:
Rhinohornis made of keratin, the samematerialashairandfingernails.
We havestudiedthecomposition,shape, andbehaviouroffeatherkeratins.
More examples
  • Without biotin, alsoknownasvitaminB7 orvitaminH, thebodycannot metabolize keratin to makenails.
  • Keratin makes thenailsstrong, butexternaltraumaor anunderlyinghealthconditioncancausethinlayersof thenailtopeelaway.
  • Mohairfibre, likewool, iscomposedchieflyof theproteinsubstancekeratin.
  • Scientists havedocumentedpopulationcollapsesamong thesefrogsdueto afunguswhichinfectskeratin, a hardproteinthatformstheouterlayeroffrogs'skin.
  • Differenttypesoffilamentsarecomposedby avarietyofproteins,includingkeratins.
SMART Vocabulary: related words and phrases
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  • vestibule
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(Definition ofkeratinfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)
keratin
noun[U]
biologyspecialized
uk
/ˈker.ə.tɪn/us
/ˈker.ə.tɪn/
astrongnaturalprotein, themainsubstancethatformshair,nails,hoofs,horns,feathers, etc.
角蛋白（一种坚韧、无色的天然蛋白质，是发、甲、蹄、角、羽毛等的主要组成物）

Examplesofkeratin

keratin
These data indicate that thesekeratinintermediate filament may have a ' hollow ' core.
From theCambridge English Corpus
It remains to be seen whether this observation is a general one for all intermediate filaments or whether it relates specifically to the trichocyte keratins.
From theCambridge English Corpus
Conservation of the structure ofkeratinintermediate filaments : molecular mechanism by which different keratin molecules integrate into preexisting keratin intermediate filaments during differentiation.
From theCambridge English Corpus
The cellular and molecular biology of keratins: beginning a new era.
From theCambridge English Corpus
The protein contained a glycinerich region with similarity to host keratins and collagen.
From theCambridge English Corpus
However, in the 1970s two other sequences, both from sheep wool keratins were characterized.
From theCambridge English Corpus
So far no discussion has been made of the trichocyte keratins.
From theCambridge English Corpus
Similarly, in keratinocytes,keratinmolecules containing one particular chain pair will ultimately be replaced by molecules comprising a different chain pair as differentiation proceeds.
From theCambridge English Corpus
The most common were actinrelated andkeratin-associated proteins.
From theCambridge English Corpus
Plakins serve two roles: they anchor thekeratinintermediate filaments to the nuclear and plasma membranes, and they connect intermediate filaments, microtubules and microfilaments together.
From theCambridge English Corpus
Repeating patterns of amino acid residues in the sequences of some high-sulphur proteins fromkeratin.
From theCambridge English Corpus
Diversity of intermediate filament structure : evidence that the alignment of coiled-coil molecules in vimentin is different from that inkeratinintermediate filaments.
From theCambridge English Corpus
These may not be inhibited by heavy metals, but are unable to initiate a proper cyst without the presence of the 'keratin-like ' granules.
From theCambridge English Corpus
A thick layer ofkeratindevelops, to which the patient is usually oblivious, and autolysis takes place underneath.
From theCambridge English Corpus
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.
#https://dictionary.cambridge.org//dictionary/english/keratin##
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更新时间：2024/12/28 1:31:43