An endothermic reaction (AH positive, heat absorbed) results when the bonds in the products are weaker than those in the reactants

TLS Online TPP Program

#Id: 8035

#Section 2: General Biology

Negatively charged amino acids have four ionisations zones

1. 1--------pK1 – charge +1

2. pK1---------pKr charge 0

3. pKr---------pK2 charge -1

4. pK2---------14 charge -2

TLS Online TPP Program

#Id: 8524

#Section 3: Genetics, Cellular and Molecular Biology

Detyrosylation 

tyrosine can be removed by a carboxypeptidase, where it sequentially removes the C-terminal tyrosines from α-tubulin subunits. 

TLS Online TPP Program

#Id: 8188

#Section 3: Genetics, Cellular and Molecular Biology

Plasmalogens

• most abundant class of PL in myelin sheaths

• Analogous to PC

• Contain an unusual fatty alcohol that is attached through an ether linkage.

TLS Online TPP Program

#Id: 7940

#Section 3: Genetics, Cellular and Molecular Biology

Once the SRP and its receptor have targeted a ribosome synthesizing a secretory protein to the ER membrane, the ribosome and nascent polypeptide chain are rapidly transferred to the translocon.

TLS Online TPP Program

#Id: 7931

#Section 3: Genetics, Cellular and Molecular Biology

Microsomes

when cells are homogenized, the rough ER breaks up into small closed vesicles with ribosomes on the outside