线粒体中的阿斯巴酸/谷氨酸载体不会运输GABA
Vito Porcelli1, Serena Barile1, Loredana Capobianco2
1Department of Biosciences Biotechnologies and Environment, University of Bari "A. Moro", 70125, Bari, Italy.
亚斯巴酸/谷氨酸载体 (AGC) 不能将氨酸 (GABA) 运输到人类或果中的线粒体中. 这一发现表明,负责线粒体GABA吸收的特定载体在这些物种中仍然未被确定.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 胺黄油酸 (GABA) 是神经系统中主要的抑制性神经递质.
- GABA代谢需要将其吸收到线粒体矩阵中.
- 之前的研究表明,阿斯巴酸/谷氨酸载体 (AGC) 携带GABA进入Drosophila melanogaster的线粒体.
研究的目的:
- 研究人类和D. melanogaster的AGC蛋白在GABA运输中的作用.
- 为了确定AGC异型是否携带GABA或被GABA抑制.
主要方法:
- 研究了人类和D. melanogaster AGC异型 (Aralar1-PA,Aralar1-PE,AGC1/aralar1,AGC2/citrin) 的基质特异性和动力学.
- 利用一个成熟的实验系统进行线粒体载体运输研究.
- 进行了对GABA,谷氨酸和酸盐的同类和异质交换试验.
主要成果:
- 人类和D. melanogaster的AGC异型不携带GABA.
- GABA没有抑制AGC异型与它们的正规基质 (谷氨酸,酸盐) 的交换活性.
结论:
- 阿斯巴酸/谷氨酸载体 (AGC) 不携带GABA.
- 人类和D. melanogaster中的线粒体GABA载体的分子身份仍然未知.
更多相关视频
07:32Analyzing Mitochondrial Transport and Morphology in Human Induced Pluripotent Stem Cell-Derived Neurons in Hereditary Spastic Paraplegia
Published on: February 9, 2020
04:50Neuromodulation and Mitochondrial Transport: Live Imaging in Hippocampal Neurons over Long Durations
Published on: June 17, 2011
相关概念视频
Mitochondrial Protein Sorting
Most of these mitochondrial proteins are encoded by the nucleus and imported to the mitochondria as unfolded or loosely folded precursors. Mitochondrial precursors...
The ADP/ATP Carrier Protein
Protein Transport into the Inner Mitochondrial Membrane
Transport of mitochondrial precursors across the TIM23 channel is driven by...
Translocation of Proteins into the Mitochondria
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
ATP Synthase: Mechanism
Energy to Drive Translocation
Generally, polypeptides are unfolded by two distinct...
