ATP used in peptide transport

[David R. Nelson]

	My colleague U.S. Rao asked me to post this question.  Does anyone have an
estimate of the molecules of ATP hydrolyzed during transport of a peptide
across the ER membrane?  He works with the multidrug resistance transporter
which also transports peptides and he was curious about the
differences/similarities in the two systems. 

-- 
David R. Nelson
Assistant Professor
Dept. of Biochemistry
University of Tennessee, Memphis