Electron affinity: The enthalpy change that results from adding an electron to a gaseous atom.

Electron affinity is becoming less negative (less exothermic) and less likely to gain an electron. 

TLS Online TPP Program

#Id: 7943

#XL - Q Biochemistry

Classes of ER membrane proteins

TLS Online TPP Program

#Id: 7942

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 7941

#XL - Q Biochemistry

The translocon was first identified through mutations in the yeast gene encoding a protein called Sec61α

TLS Online TPP Program

#Id: 7940

#XL - Q Biochemistry

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: 7939

#XL - Q Biochemistry

The GTPase cycle analogous to the GTP hydrolysis coupled to the initiation of translation on the ribosome.

TLS Online TPP Program

#Id: 7938

#XL - Q Biochemistry

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.