The mRNA that codes for ________ possesses an iron response element.
A) Collagen
B) Elastin
C) Globin
D) Ferritin
E) Thiogalactoside transacetylase

Question

The mRNA that codes for ________ possesses an iron response element. 
A) Collagen
B) Elastin
C) Globin
D) Ferritin
E) Thiogalactoside transacetylase

Quizplus · Accepted Answer

Ferritin mRNA contains an iron response element (IRE) in its 5' untranslated region. The IRE is a specific nucleotide sequence that binds iron regulatory proteins (IRPs) when cellular iron levels are low, preventing the translation of ferritin mRNA. Ferritin is a protein that stores iron, so this regulation ensures that iron storage does not occur when iron is scarce, allowing more iron to be available for essential functions.

The MRNA That Codes for ________ Possesses an Iron Response