4.6 Regulation of Gene Expression in Bacteria Part 3

Question 1

When do sRNAs typically do their job?

Answer 1

during times of cellular stress such as changing environmental conditions or low temperatures

Question 2

What is an example of an sRNA in E coli?

Answer 2

RyhB sRNA

Question 3

What does RyhB sRNA do?

Answer 3

negative regulator of genes that controls iron expression

Question 4

What does RyhB sRNA do in response to low iron levels?

Answer 4

inhibit the translation of iron utilizing, non essential genes to more critical enzymes can use the low iron supplies