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Protein structure

About: Protein structure is a research topic. Over the lifetime, 42332 publications have been published within this topic receiving 3043498 citations. The topic is also known as: protein conformation.


Papers
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Journal ArticleDOI
TL;DR: A computer program that progressively evaluates the hydrophilicity and hydrophobicity of a protein along its amino acid sequence has been devised and its simplicity and its graphic nature make it a very useful tool for the evaluation of protein structures.

21,921 citations

Book
01 Jan 1986
TL;DR: The NMR Assignment Problem in Biopolymers, two-Dimensional NMR With Proteins and Nucleic Acids, and Sequence-Specific Resonance Assignments.
Abstract: Introduction and Survey. THE FOUNDATIONS: STRUCTURE AND NMR OF BIOPOLYMERS. NMR of Amino Acid Residues and Mononucleotides. NMR Spectra of Proteins and Nucleic Acids in Solution. The NMR Assignment Problem in Biopolymers. Two-Dimensional NMR With Proteins and Nucleic Acids. Nuclear Overhauser Enhancement (NOE) in Biopolymers. RESONANCE ASSIGNMENTS AND STRUCTURE DETERMINATION IN PROTEINS. NOE-Observable 1H-1H Distances in Proteins. Sequence-Specific Resonance Assignments in Proteins. Polypeptide Secondary Structures in Proteins by NMR. Three-Dimensional Protein Structures by NMR. RESONANCE ASSIGNMENTS AND STRUCTURE DETERMINATION IN NUCLEIC ACIDS. NOE-Observable 1H-1H Distances in Nucleic Acids. Resonance Assignments in Nucleic Acids Using Scalar Couplings. Nucleic Acid Conformation, 1H-1H Overhauser Effects, and Sequence-Specific Resonance Assignments. WITH NMR TO BIOPOLYMER CONFORMATION AND BEYOND. Conformation of Noncrystalline Proteins and Nucleic Acids. NMR Studies of Intermolecular Interactions with Biopolymers. References. Index.

6,190 citations

Journal ArticleDOI
TL;DR: The accessibility of atoms in the twenty common amino acids in model tripeptides of the type Ala-X-Ala are given for defined conformation and the larger non-polar amino acids tend to be more “buried” in the native form of all three proteins.

5,697 citations

Journal ArticleDOI
10 Feb 2000-Nature
TL;DR: Examination of large-scale yeast two-hybrid screens reveals interactions that place functionally unclassified proteins in a biological context, interactions between proteins involved in the same biological function, and interactions that link biological functions together into larger cellular processes.
Abstract: Two large-scale yeast two-hybrid screens were undertaken to identify protein-protein interactions between full-length open reading frames predicted from the Saccharomyces cerevisiae genome sequence. In one approach, we constructed a protein array of about 6,000 yeast transformants, with each transformant expressing one of the open reading frames as a fusion to an activation domain. This array was screened by a simple and automated procedure for 192 yeast proteins, with positive responses identified by their positions in the array. In a second approach, we pooled cells expressing one of about 6,000 activation domain fusions to generate a library. We used a high-throughput screening procedure to screen nearly all of the 6,000 predicted yeast proteins, expressed as Gal4 DNA-binding domain fusion proteins, against the library, and characterized positives by sequence analysis. These approaches resulted in the detection of 957 putative interactions involving 1,004 S. cerevisiae proteins. These data reveal interactions that place functionally unclassified proteins in a biological context, interactions between proteins involved in the same biological function, and interactions that link biological functions together into larger cellular processes. The results of these screens are shown here.

4,877 citations

Book ChapterDOI
TL;DR: The chapter reviews that the denaturation is a process in which the spatial arrangement of the polypeptide chains within the molecule is changed from that typical of the native protein to a more disordered arrangement.
Abstract: Publisher Summary This chapter explores that the changes that take place in the protein molecules during denaturation constitute one of the most interesting and complex classes of reactions that can be found either in nature or in the laboratory These reactions are important because of the information they can provide about the more intimate details of protein structure and function They are also significant because they challenge the chemist with a difficult area for the application of chemical principles The chapter reviews that the denaturation is a process in which the spatial arrangement of the polypeptide chains within the molecule is changed from that typical of the native protein to a more disordered arrangement The chapter also discusses the classification of protein structures: primary, secondary, and tertiary structures The primary structure is that expressed by the structural chemical formula and depends entirely on the chemical valence bonds that the classical organic chemist would write down for the protein molecule The secondary structure is the configuration of the polypeptide chain that results from the satisfaction of the hydrogen bonding potential between the peptide N-H and C=O groups The tertiary structure is the pattern according to which the secondary structures are packed together within the native protein molecule The term “denaturation” as used in this chapter is indented to include changes in both the secondary and tertiary structures

4,528 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202382
2022191
2021581
2020741
2019834
2018906