ISSN:
0021-9541
Keywords:
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
,
Medicine
Notes:
A strain of aerobic thermophilic bacteria was selected in order to purify highly stable membrane proteins and to reconstitute proteoliposomes capable of transporting nutrients from them. These proteins responsible for the transport could be divided into (1) proteins which supply energy to the transporting system, and (2) specific nutrient carriers driven by the energy. The former included a stable ATPase (TF1) and a lipoprotein (TF0) which rendered TF1 sensitive to energy transfer inhibitors. The complex of TF0 and TF1 could transport protons into reconstituted proteoliposomes upon hydrolysis of ATP. And one of the latter reported in this paper was alanine carrier protein which was driven by proton movement.TF1 was the first crystallized ATPase in biomembranes, and was reconstituted from its five different polypeptides, two of which were necessary for ATPase activity and four of which, for proton translocation. Purification of alanine carrier and reconstitution of proteoliposomes capable of alanine accumulation were also demonstrated.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jcp.1040890413
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