EIF ALPHA Meaning and
Definition
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eIF alpha, also known as eukaryotic initiation factor 2-alpha, is a protein that plays a crucial role in the initiation of protein synthesis in eukaryotic cells. It is a subunit of the eIF-2 complex, which is responsible for recruiting the initiator tRNA to the 40S ribosome subunit during translation.
In protein synthesis, eIF alpha is involved in the process of translation initiation. It assists in the binding of the initiator methionine-tRNA to the small ribosomal subunit, allowing the formation of the complex that initiates the translation process. This binding occurs in a GTP-dependent manner, whereby the GTP-bound form of eIF alpha facilitates the attachment of the tRNA to the ribosome.
The regulation of eIF alpha is crucial for controlling protein synthesis in response to various cellular signals. Phosphorylation of eIF alpha at a specific serine residue is a key regulatory mechanism. Different kinases, such as the double-stranded RNA-activated protein kinase (PKR), the heme-regulated inhibitor (HRI), and the general control nonderepressible (GCN2) kinase, can phosphorylate eIF alpha, leading to the inhibition of protein synthesis under different stress conditions, such as viral infection, nutrient deprivation, or heme deficiency.
Overall, eIF alpha plays a vital role in the regulation of protein synthesis and serves as a key component in the initiation of translation in eukaryotic cells. Its phosphorylation status is tightly regulated, allowing cells to respond and adapt to various environmental and cellular signals.
Common Misspellings for EIF ALPHA
- wif alpha
- sif alpha
- dif alpha
- rif alpha
- 4if alpha
- 3if alpha
- euf alpha
- ejf alpha
- ekf alpha
- eof alpha
- e9f alpha
- e8f alpha
- eid alpha
- eic alpha
- eiv alpha
- eig alpha
- eit alpha
- eir alpha
- eif zlpha
- eif slpha
Etymology of EIF ALPHA
The term "eIF alpha" is an abbreviation used in molecular biology and stands for "eukaryotic initiation factor alpha". The etymology of the term can be broken down as follows:
1. Eukaryotic: This word comes from the combination of the Greek roots "eu" meaning "well" or "good", and "karyon" meaning "nut" or "kernel". In biology, eukaryotes refer to organisms whose cells contain a nucleus and other membrane-bound organelles.
2. Initiation: This word derives from the Latin word "initiare" meaning "begin". In the context of molecular biology, initiation refers to the start of protein synthesis or the assembly of protein chains.
3. Factor: This term comes from the Latin word "facere" meaning "to do" or "to make".
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