• 主页
  • 查找结果
  • Quantitative proteomics identifies NCOA4 as the cargo receptor mediating ferritinophagy.

Quantitative proteomics identifies NCOA4 as the cargo receptor mediating ferritinophagy.

Nature (2014-04-04)
Joseph D Mancias, Xiaoxu Wang, Steven P Gygi, J Wade Harper, Alec C Kimmelman
摘要

Autophagy, the process by which proteins and organelles are sequestered in double-membrane structures called autophagosomes and delivered to lysosomes for degradation, is critical in diseases such as cancer and neurodegeneration. Much of our understanding of this process has emerged from analysis of bulk cytoplasmic autophagy, but our understanding of how specific cargo, including organelles, proteins or intracellular pathogens, are targeted for selective autophagy is limited. Here we use quantitative proteomics to identify a cohort of novel and known autophagosome-enriched proteins in human cells, including cargo receptors. Like known cargo receptors, nuclear receptor coactivator 4 (NCOA4) was highly enriched in autophagosomes, and associated with ATG8 proteins that recruit cargo-receptor complexes into autophagosomes. Unbiased identification of NCOA4-associated proteins revealed ferritin heavy and light chains, components of an iron-filled cage structure that protects cells from reactive iron species but is degraded via autophagy to release iron through an unknown mechanism. We found that delivery of ferritin to lysosomes required NCOA4, and an inability of NCOA4-deficient cells to degrade ferritin led to decreased bioavailable intracellular iron. This work identifies NCOA4 as a selective cargo receptor for autophagic turnover of ferritin (ferritinophagy), which is critical for iron homeostasis, and provides a resource for further dissection of autophagosomal cargo-receptor connectivity.

材料
货号
品牌
产品描述

Sigma-Aldrich
铁, ≥99%, reduced, powder (fine)
Sigma-Aldrich
抗肌动蛋白抗体 兔抗, affinity isolated antibody, buffered aqueous solution
Sigma-Aldrich
铁蛋白 来源于马脾脏, Type I, saline solution
Sigma-Aldrich
铁, powder, −325 mesh, 97%
Sigma-Aldrich
羰基铁, ≥97% Fe basis
Sigma-Aldrich
铁, powder, <10 μm, ≥99.9% trace metals basis
Sigma-Aldrich
铁, puriss. p.a., carbonyl-Iron powder, low in magnesium and manganese compounds, ≥99.5% (RT)
Sigma-Aldrich
铁, flakes, ≥99.99% trace metals basis
Sigma-Aldrich
铁, nanopowder, 35-45 nm particle size, 99.5% trace metals basis
Sigma-Aldrich
铁, granular, 10-40 mesh, >99.99% trace metals basis
Sigma-Aldrich
铁, chips, 99.98% trace metals basis
Sigma-Aldrich
铁, foil, thickness 0.1 mm, ≥99.9% trace metals basis
Sigma-Aldrich
铁蛋白 来源于人类肝脏, Type IV, 10 μg/mL
Sigma-Aldrich
铁, foil, thickness 0.25 mm, ≥99.99% trace metals basis
Sigma-Aldrich
铁蛋白 来源于人类脾脏, Type V, 10 μg/mL in 0.15 M NaCl, 10 mM Tris, pH 8.0, containing 0.1% sodium azide
Sigma-Aldrich
铁, wire, diam. 1.0 mm, ≥99.9% trace metals basis
Sigma-Aldrich
铁, carbon coated magnetic, nanopowder, 25 nm avg. part. size, 99.5% trace metals basis
Sigma-Aldrich
Monoclonal Anti-NCOA4, (C-terminal) antibody produced in mouse, clone 1F11, purified immunoglobulin, buffered aqueous solution
Sigma-Aldrich
铁, wire, diam. 0.5 mm, ≥99.9% trace metals basis
Sigma-Aldrich
铁, rod, diam. 6.3 mm, 99.98% trace metals basis
铁, IRMM®, certified reference material, 0.5 mm wire
铁, foil, 300x300mm, thickness 0.1mm, hard, 99.5%
铁, foil, 0.2m coil, thickness 0.5mm, coil width 49mm, armco« soft ingot 99.8+%
铁, wire reel, 1m, diameter 0.025mm, as drawn, 99.99+%
铁, wire reel, 20m, diameter 0.125mm, hard, 99.5%
铁, foil, 10mm disks, thickness 0.01mm, 99.85%
铁, foil, 10mm disks, thickness 0.01mm, 99.99+%
铁, foil, 10mm disks, thickness 0.020mm, 99.85%
铁, foil, 10mm disks, thickness 0.025mm, as rolled, 99.99+%
铁, foil, 10mm disks, thickness 0.025mm, hard, 99.5%

社交媒体

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon

Merck

科研、开发、生产。

作为生命科学行业的全球领先供应商,我们致力于为科研、生物技术开发和生产,以及制药药物疗法开发和生产提供各类解决方案和服务。

© 2021年版权归德国达姆施塔特默克集团(Merck KGaA)及/或其附属公司所有。版权所有。

未经许可,严禁复制本网站上的任何资料。