Expression and Characterization of Chicken Muscle Ecto‐ATPase in Mammalian COS Cells
Expression and Characterization of Chicken Muscle Ecto‐ATPase in Mammalian COS Cells
复制标题
鸡肌肉外源 ATP 酶在哺乳动物 COS 细胞中的表达和表征
DOI:
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发表时间:
1999
期刊:
影响因子:
--
通讯作者:
Thomas M. Smith
中科院分区:
文献类型:
--
作者:
T. Kirley;Lamar K Gerber;Thomas M. Smith
Chicken muscle ecto‐ATPase has unusual enzyme kinetics and properties not found in many other E‐type ATPases. To determine whether the unique properties of the chicken ecto‐ATPase are inherent in the protein sequence and not mediated by some unique property of the chicken system, we have spliced together two partial cDNAs encoding the ecto‐ATPase. The enzymatic properties of the COS (green monkey kidney)cell‐expressed protein are indistinguishable from the purified chicken gizzard ecto‐ATPase, including a 2‐ to 3‐fold stimulation of membrane‐bound activity by crosslinking and lectins, properties not shared by most other E‐type ATPases. The expressed enzyme is specific for nucleotide triphosphates (ATPase:ADPase hydrolysis ratio of 26:1) and is inhibited by Cibacron Blue (IC 10 mu M). The active, expressed enzyme = 50 can be affinity‐purified with Cibacron Blue, is relatively resistant to deglycosylation, and is less stable than other E‐type ATPases. Expression in the presence of tunicamycin resulted in an inactive, unfolded enzyme.
DOI:
10.1016/s0021-9258(18)61070-1
发表时间:
1987-07
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
P. Matsudaira
通讯作者:
P. Matsudaira
影响因子:
15.9
作者:
Marcus, AJ;Broekman, MJ;Maliszewski, CR
通讯作者:
Maliszewski, CR
影响因子:
2.9
作者:
Stout,JG;Kirley,TL
通讯作者:
Kirley,TL