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Chapter 4: Q16. (page 95)

Some hormone-signaling pathways result in the phosphorylation of tyrosine resides in proteins. Draw the structure of a phosphotyrosine side chain.

Short Answer

Expert verified

The Chemical structure of the phosphotyrosine is as follows:

Step by step solution

01

Hormone-signaling pathways

The signaling pathways which are induced by the hormones to regulate the cell function are hormone-signaling pathways.

02

Phosphorylation

Phosphorylation is the chemical addition of the phosphate groups to organic molecules.Phosphorylation is the mechanism which regulates the process of cell signaling mechanism. It plays a critical role in the regulation of various cell cycle processes like cell cycle, cellular growth, apoptosis etc.

03

Importance of tyrosine phorphorylation

Tyrosine phosphorylation is required for posttranslational modification. It initiates a series of signaling pathways that regulate proliferation, adhesion and migration of cells.

04

Chemical structure of the Phosphotyrosine side chain:

Hence, the mechanism of phosphorylation and the chemical structure of the Phosphotyrosine was understood.

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Most popular questions from this chapter

Lanthionine is a nonstandard amino acid consisting of two alanine residues linked via their β carbon atoms by a thioether (—S—) linkage. Draw the structure of lanthionine.

A sample of the amino acid tyrosine is barely soluble in water. Would a polypeptide containing only Tyr residues, poly(Tyr), be more or less soluble, assuming the total number of Tyr groups remains constant?

(a) What is the net charge at neutral pH of a tripeptide containing only alanine? (b) How does the total number of negative and positive charges change following hydrolysis of the tripeptide?

Explain how the Fischer convention describes the absolute configuration of a chiral molecule.

Draw the four stereoisomers of threonine as Fischer projections.
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