why do carbohydrates face away from the cytosol in internal membranes?

Question

shrutipande9 · Answer

Carbohydrates attached to lipids or proteins in membrane face the ecm side because generally it acts as a signaling receptor or epitope of the cell.

anonymous · Answer

@shrutipande9 yes i know it faces the extracellular fluid outside the cell, but isn't it inside on internal organelles of the cell?

shrutipande9 · Answer

I m not vry sure...as in I dnt hv an eg where glycoprotein is part of organelle membrane.  But if it occurs(ideally it should occur) then u know that proteins need 2 b transported in the organelle. For this glycoprotein acts as a signal...where to exactly transport.  This is my guess...

shrutipande9 · Answer

The sugars of glycoproteins are exclusively found on the extracellular side of the membrane or topological equivalent

shrutipande9 · Answer

http://www.d.umn.edu/~sdowning/Membranes/lecturenotes.html check this site...hope it helps