Inhibition of proteasome activity by the TED4 protein in extracellular space: a novel mechanism for protection of living cells from injury caused by dying cells.
Inhibition of proteasome activity by the TED4 protein in extracellular space: a novel mechanism for protection of living cells from injury caused by dying cells.
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细胞外空间中 TED4 蛋白对蛋白酶体活性的抑制:保护活细胞免受死亡细胞损伤的新机制。
DOI:
10.1093/pcp/pce002
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发表时间:
2001
影响因子:
4.9
通讯作者:
Hiroo Fukuda
中科院分区:
文献类型:
--
作者:
Satoshi Endo;T. Demura;Hiroo Fukuda
In maturation process of tracheary element (TE) differentiation, many hydrolases are activated to execute programmed cell death of TEs. Such hydrolases are released from maturing TEs into extracellular space. The release of hydrolases should be harmful to surrounding cells. The TED4 protein, a tentative plant non-specific lipid transfer protein that is expressed preferentially in TE-induced culture of zinnia (Zinnia elegans L.), is secreted into the apoplastic space prior to and associated with morphological changes of TEs. Our studies on the interrelationship between the TED4 protein and proteolytic activities using an in vitro TE differentiation system of zinnia revealed the following facts. (1) Active proteasome is released into medium at maturation stage of TE differentiation. (2) The TED4 protein forms a complex with proteasome in culture medium. (3) The TED4 protein inhibits proteasome activity in the medium and crude extracts of zinnia cells. (4) The depletion of the TED4 protein from culture medium results in an increase in mortality of other living cells. These results strongly suggest that the secreted TED4 protein acts as an inhibitor of proteasome to protect other cells from undesirable injury due to proteolytic activities exudated from dying TEs.
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DOI:
10.1016/s0021-9258(18)37771-8
发表时间:
1988-09
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
D. Ganoth;Esther Leshinsky;E. Eytan;A. Hershko
通讯作者:
D. Ganoth;Esther Leshinsky;E. Eytan;A. Hershko
影响因子:
7.5
作者:
HOCHSTRASSER, M
通讯作者:
HOCHSTRASSER, M
DOI:
10.1073/pnas.92.2.584
发表时间:
1995
影响因子:
11.1
作者:
Ustrell,V;Pratt,G;Rechsteiner,M
通讯作者:
Rechsteiner,M
影响因子:
3.9
作者:
Figueiredo-Pereira,ME;Chen,WE;Yuan,HM;Wilk,S
通讯作者:
Wilk,S
影响因子:
3.3
作者:
Fu,H;Doelling,JH;Arendt,CS;Hochstrasser,M;Vierstra,RD
通讯作者:
Vierstra,RD