2XKU

Prion-like conversion during amyloid formation at atomic resolution

2XKU の概要

• エントリーDOI: 10.2210/pdb2xku/pdb
• 関連するPDBエントリー: 1A1M 1A1N 1A1O 1A6Z 1A9B 1A9E 1AGB 1AGC 1AGD 1AGE 1AGF 1AKJ 1AO7 1B0G 1B0R 1BD2 1C16 1CE6 1CG9 1DE4 1DUY 1DUZ 1E27 1E28 1EEY 1EEZ 1EFX 1EXU 1GZP 1GZQ 1HHG 1HHH 1HHI 1HHJ 1HHK 1HLA 1HSA 1HSB 1I1F 1I1Y 1I4F 1I7R 1I7T 1I7U 1IM3 1IM9 1JF1 1JGD 1JGE 1JHT 1JNJ 1K5N 1KPR 1KTL 1LDS 1LP9 1M05 1M6O 1MHE 1MI5 1OF2 1OGA 1OGT 1ONQ 1P7Q 1PY4 1Q94 1QEW 1QLF 1QQD 1QR1 1QRN 1QSE 1QSF 1QVO 1R3H 1S9W 1S9X 1S9Y 1SYS 1SYV 1TMC 1TVB 1TVH 1UQS 1UR7 1UXS 1UXW 1VGK 1W0V 1W0W 1W72 1X7Q 1XH3 1XR8 1XR9 1XZ0 1YDP 1YPZ 1ZS8 1ZSD 1ZT4 2A83 2AK4 2AV1 2AV7 2AXF 2AXG 2BCK 2BNQ 2BNR 2BSR 2BSS 2BST 2BVO 2BVP 2BVQ 2C7U 2CII 2CIK 2CLR 2D31 2ESV 2F74 2F8O 2GJ6 2H26 2HJK 2HJL 2HLA 2J8U 2JCC 2UWE 2V2W 2V2X 2VB5 2VLJ 2VLK 2VLL 2VLR 2X4N 2X4O 2X4P 2X4R 2X4S 2X4T 2X4U 2X70 2X89 2XKS 2XKT 3HLA
• NMR情報: BMRB: 17166
• 分子名称: BETA-2-MICROGLOBULIN (1 entity in total)
• 機能のキーワード: amyloidosis, immune system, ig-domain
• 由来する生物種: HOMO SAPIENS (HUMAN)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 11153.48

構造登録者

Eichner, T.,Kalverda, A.P.,Thompson, G.S.,Homans, S.W.,Radford, S.E. (登録日: 2010-07-12, 公開日: 2011-02-09, 最終更新日: 2024-10-16)

主引用文献

Eichner, T.,Kalverda, A.P.,Thompson, G.S.,Homans, S.W.,Radford, S.E.
Conformational Conversion During Amyloid Formation at Atomic Resolution.
Mol.Cell, 41:161-172, 2011

PubMed Abstract: Numerous studies of amyloid assembly have indicated that partially folded protein species are responsible for initiating aggregation. Despite their importance, the structural and dynamic features of amyloidogenic intermediates and the molecular details of how they cause aggregation remain elusive. Here, we use ΔN6, a truncation variant of the naturally amyloidogenic protein β(2)-microglobulin (β(2)m), to determine the solution structure of a nonnative amyloidogenic intermediate at high resolution. The structure of ΔN6 reveals a major repacking of the hydrophobic core to accommodate the nonnative peptidyl-prolyl trans-isomer at Pro32. These structural changes, together with a concomitant pH-dependent enhancement in backbone dynamics on a microsecond-millisecond timescale, give rise to a rare conformer with increased amyloidogenic potential. We further reveal that catalytic amounts of ΔN6 are competent to convert nonamyloidogenic human wild-type β(2)m (Hβ(2)m) into a rare amyloidogenic conformation and provide structural evidence for the mechanism by which this conformational conversion occurs.

PubMed: 21255727
DOI: 10.1016/J.MOLCEL.2010.11.028

実験手法

SOLUTION NMR