59キロダルトンの免疫フィリンの結合とグルココルチコイド受容体複合体との関連
1Department of Obstetrics and Gynecology, Medical College of Ohio, Toledo 43699.
まとめ
免疫フィリン (rotamase活性を持つタンパク質) は,熱ショックタンパク質とグルココルチコイド受容体 (GR) と結合する. この発見は,タンパク質の折りたたみと免疫抑制経路を結びつけ,結合していない免疫フィリンが潜在的役割を果たしていることを示しています.
科学分野:
- 分子生物学は分子生物学である.
- 細胞生物学 細胞生物学
- 免疫学 免疫学とは
背景:
- 免疫フィリンとは,ペプチジルプロリルシストランスイソメラーゼ活性を持つタンパク質です.
- 彼らの生理学的役割は,特にFK506,ラパミシン,またはサイクロスポリンAのような薬剤に結合しない場合,ほとんど不明のままです.
- 免疫フィリンは,強力な免疫抑制薬の作用機構に関与しています.
研究 の 目的:
- 結合していない免疫フィリンの生理学的役割を調査する.
- これらの薬がない場合,特定のFK506およびラパミシン結合免疫フィリンと結合するタンパク質を特定する.
主な方法:
- 生化学的関連性研究が行われました.
- 59キロダルトンのイムノフィリンは,その結合パートナーについて調べられました.
主要な成果:
- 59キロダルトンの免疫フィリンは,熱ショックタンパク質 (hsp90およびhsp70) とグルココルチコイド受容体 (GR) と結合することが判明しました.
- これらの関連タンパク質は,グルココルチコイド受容体の非活性形態を構成する.
- これにより,免疫フィリン,熱ショックタンパク質,およびグルココルチコイド受容体間の生化学的リンクが確立されます.
結論:
- 非結合免疫フィリンは,不活性グルココルチコイド受容体複合体の一部である.
- この発見は,タンパク質の折りたたみ/組み立て装置と免疫抑制薬の標的を結びつけています.
- 免疫フィリンがグルココルチコイド受容体機能を調節する潜在的な役割を示唆しています.
関連する概念動画
Cross-reactivity
Overview
Conjugated Proteins
Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
Antigens Involved in Adaptive Immunity
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Diversity of Antigen Receptors
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...


