Soluble ER-resident proteins contain C-terminal KDEL sorting signal that allows them to be retrieved. 

TLS Online TPP Program

#Id: 8523

#Section 3: Genetics, Cellular and Molecular Biology

TLS Online TPP Program

#Id: 7756

#Section 2: General Biology

Fluorine (the most electronegative element) is assigned a value of 4.0, and values range down to cesium and francium which are the least electronegative at 0.7

TLS Online TPP Program

#Id: 8205

#Section 3: Genetics, Cellular and Molecular Biology

Membranes of late endosomes and lysosomes contain V-class proton pumps that act in concert with Cl- channels to acidify the vesicle lumen.

TLS Online TPP Program

#Id: 7938

#Section 3: Genetics, Cellular and Molecular Biology

The SRP and the nascent polypeptide chain–ribosome complex bind to the SRP receptor in the ER membrane. This interaction is strengthened by the binding of GTP to both the SRP and its receptor.

TLS Online TPP Program

#Id: 10322

#Section 2: General Biology

Sometimes the tumor cells up-regulate the expression of anti-apoptotic proteins like BCL-2.