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Journal of Bacteriology, January 2000, p. 241-243, Vol. 182, No. 1
0021-9193/0/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Monoubiquitination Is Sufficient To Signal Internalization of the Maltose Transporter in Saccharomyces cerevisiae

Pilar Lucero, Élida Peñalver, Laura Vela, and Rosario Lagunas*

Instituto de Investigaciones Biomédicas "Alberto Sols," Consejo Superior de Investigaciones Científicas, 28029 Madrid, Spain

Received 21 July 1999/Accepted 8 October 1999

Monoubiquitination of the 12-transmembrane segment (12-TMS) Saccharomyces cerevisiae maltose transporter promoted the maximal internalization rate of this protein. This modification is similar to that of the 7-TMS alpha -factor receptor but different from that of the 12-TMS uracil and general amino acid permeases. This result shows that binding of ubiquitin-Lys63 chains is not required for maximal internalization of all 12-TMS-containing proteins.

* Corresponding author. Mailing address: Instituto de Investigaciones Biomédicas "Alberto Sols," CSIC-UAM, Arturo Duperier 4, 28029 Madrid, Spain. Phone: 34-91-5854614. Fax: 34-91-5854587. E-mail: Rlagunas{at}iib.uam.es.

Journal of Bacteriology, January 2000, p. 241-243, Vol. 182, No. 1
0021-9193/0/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.


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