PEX19 binds multiple peroxisomal membrane proteins, is predominantly cytoplasmic, and is required for peroxisome membrane synthesis.
PEX19 binds multiple peroxisomal membrane proteins, is predominantly cytoplasmic, and is required for peroxisome membrane synthesis.
复制标题
DOI:
10.1083/jcb.148.5.931
复制
发表时间:
2000-03-06
期刊:
影响因子:
--
通讯作者:
Gould SJ
中科院分区:
文献类型:
--
作者:
Sacksteder KA;Jones JM;South ST;Li X;Liu Y;Gould SJ
Peroxisomes are components of virtually all eukaryotic cells. While much is known about peroxisomal matrix protein import, our understanding of how peroxisomal membrane proteins (PMPs) are targeted and inserted into the peroxisome membrane is extremely limited. Here, we show that PEX19 binds a broad spectrum of PMPs, displays saturable PMP binding, and interacts with regions of PMPs required for their targeting to peroxisomes. Furthermore, mislocalization of PEX19 to the nucleus leads to nuclear accumulation of newly synthesized PMPs. At steady state, PEX19 is bimodally distributed between the cytoplasm and peroxisome, with most of the protein in the cytoplasm. We propose that PEX19 may bind newly synthesized PMPs and facilitate their insertion into the peroxisome membrane. This hypothesis is supported by the observation that the loss of PEX19 results in degradation of PMPs and/or mislocalization of PMPs to the mitochondrion.
登录
查看更多内容
影响因子:
9.8
作者:
Chang, CC;Gould, SJ
通讯作者:
Gould, SJ
影响因子:
3.5
作者:
DEKKER, PJT;KEIL, P;MEIJER, M
通讯作者:
MEIJER, M
影响因子:
7.8
作者:
Imanaka, T;Small, G M;Lazarow, P B
通讯作者:
Lazarow, P B
DOI:
10.1083/jcb.147.4.761
发表时间:
1999-11-15
期刊:
The Journal of cell biology
影响因子:
--
作者:
Chang CC;Warren DS;Sacksteder KA;Gould SJ
通讯作者:
Gould SJ
DOI:
10.1083/jcb.133.2.269
发表时间:
1996-04
期刊:
The Journal of cell biology
影响因子:
--
作者:
Dyer JM;McNew JA;Goodman JM
通讯作者:
Goodman JM