The CDR of a selectin protein was initially extended into the vesicle lumen as it was transported in a vesicle on its way to its final destination (option b).
The CDR domain in selectin proteins is a molecule region of this protein that adopts a particular conformation, which is extended into vesicles for final transportation during this process.
Therefore, with this data, we can see that the CDR domain in selectin proteins is a region that adopts a given tridimensional shape and is recognized to be transported by vesicles in order to reach the final localization of these proteins in the cell environment.
Complete question:
The CRD of a selectin protein was initially extending into the ____________ as it was transported in a vesicle on its way to its final destination.
extracellular space
vesicle lumen
nucleus
cytoplasm
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