Immediately after the entire precursor, Glc3Man9(GlcNAc)2 is transferred to a nascent polypeptide, three different enzymes, called  glycosidases, remove all three glucose residues and one particular mannose residue.

TLS Online TPP Program

#Id: 8409

#Section 3: Genetics, Cellular and Molecular Biology

Troponin, a complex of three polypeptides, 

TN-T (tropomyosin-binding)

TN-I  (inhibitory)

TN-C (Ca2+-binding)

TLS Online TPP Program

#Id: 7929

#Section 3: Genetics, Cellular and Molecular Biology

The ER captures selected proteins from the cytosol as they are being synthesized. These are of two types:

Transmembrane proteins

Water-soluble proteins

TLS Online TPP Program

#Id: 8608

#Section 3: Genetics, Cellular and Molecular Biology

There are three D cyclins in mammals:

cyclins D1, D2, and D3

TLS Online TPP Program

#Id: 8150

#Section 3: Genetics, Cellular and Molecular Biology

Sar1 is the only GTPase switch protein activated at the ER membrane

TLS Online TPP Program

#Id: 10339

#Section 2: General Biology