The exact 3D structure of a purified protein can be determined by __________ and ____________.
X-ray crystallography NMR spectroscopy
举一反三
- _______________ determines the exact mass of every peptide fragment in a purified protein, which then allows the protein to be identified from a database that contains a list of every protein thought to be encoded by the genome of the organism in question.
- The β-sheet conformation of a protein can be considered an example of（） A: Primary structure B: Secondary structure C: Tertiary structure D: Quaternary structure
- Protein folding has been studied in the laboratory using highly purified proteins. A protein can be unfolded, or denatured, by treatment with _______ that disrupt the noncovalent interactions holding the folded chain together.
- A part of protein sequence that can form a compact three-dimensional structure and often can be independently folded is called ______.
- β-turns in protein molecules belong to the protein's hierarchical structure? A: Primary structure B: Secondary structure C: Tertiary structure D: Side chain conformation
内容
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The protein localization is determined by its sorting signal that directs the protein to the organelle.
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Which structure is not secondary structure of the protein？（） A: α-helix B: β- fold C: β- Angle D: subunits
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When an enzyme protein is purified and assayed step by step, _____________________________________ with each step. A: oth activity and total protein generally increase B: activity increases but total protein generally decreases C: oth activity and total protein generally decrease D: activity decreases but total protein generally increases
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The primary structure of a protein is the sequence of amino acids.（）
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蛋白质的三级结构(protein tertiary structure)