Modifications to the C-terminus of Arf1 alter cell functions and protein interactions.
Modifications to the C-terminus of Arf1 alter cell functions and protein interactions.
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DOI:
10.1111/j.1600-0854.2010.01054.x
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发表时间:
2010-06
期刊:
影响因子:
--
通讯作者:
Kahn RA
中科院分区:
文献类型:
--
作者:
Jian X;Cavenagh M;Gruschus JM;Randazzo PA;Kahn RA
Arf family proteins are ≈21 kDa GTP-binding proteins that are critical regulators of membrane traffic and the actin cytoskeleton. Studies examining the complex signaling pathways underlying Arf action have relied on recombinant proteins comprised of Arf fused to epitope tags or proteins such as glutathione-S-transferase or green fluorescent protein for both cell-based mammalian cell studies and bacterially expressed recombinant proteins for biochemical assay. However, the effects of such protein fusions on the biochemical properties relevant to the cellular function have been only incompletely studied at best. Here, we have characterized the effect of C-terminal tagging of Arf1 on (i) function in S. cerevisiae, (ii) in vitro nucleotide exchange, and (iii) interaction with guanine nucleotide exchange factors and GTPase-activating proteins. We found that the tagged Arfs were substantially impaired or altered in each assay, compared to the wild type protein, and these changes are certain to alter actions in cells. We discuss the results related to the interpretation of experiments using these reagents and we propose that authors and editors consistently adopt a few simple rules for describing and discussing results obtained with Arf family members that can be readily applied to other proteins.
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DOI:
10.1083/jcb.200806041
发表时间:
2008-09-22
期刊:
The Journal of cell biology
影响因子:
--
作者:
Kahn RA;Bruford E;Inoue H;Logsdon JM Jr;Nie Z;Premont RT;Randazzo PA;Satake M;Theibert AB;Zapp ML;Cassel D
通讯作者:
Cassel D
影响因子:
6.8
作者:
Bickford, LC;Mossessova, E;Goldberg, J
通讯作者:
Goldberg, J
影响因子:
4.8
作者:
Cavenagh, MM;Whitney, JA;Kahn, RA
通讯作者:
Kahn, RA
DOI:
10.1016/j.str.2008.10.020
发表时间:
2009-01-14
期刊:
Structure (London, England : 1993)
影响因子:
--
作者:
Liu Y;Kahn RA;Prestegard JH
通讯作者:
Prestegard JH
影响因子:
64.8
作者:
AMOR, JC;HARRISON, DH;RINGE, D
通讯作者:
RINGE, D