why the trans face is called the maturing face and the cis face as forming  face ?

Dear student

Please refer the solution below for the said query

The cis face is called forming face as the proteins produced in endoplasmic reticulum fuse with this face and undergo modification, sorting, and packaging. Thus results in forming of functional proteins. 
The trans face is called maturing face as the modified proteins from cis face are released in mature form through this region. 

Hope this information clears your doubt about the topic.


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