Question

True or False? Lck phosphorylated tyrosine residues within the cytoplasmic tail of the t cell receptor...

True or False?

Lck phosphorylated tyrosine residues within the cytoplasmic tail of the t cell receptor to activate naive T cells.

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Lck phosphorylated tyrosine residues within the cytoplasmic tail of the t cell receptor to activate native T cells.

Answer: True
Explanation:
Lck belongs to Src family of protein tyrosine kinases (PTKs). T cells originate in the bone marrow and its maturation takes place in
thymus where it differentiated to form memory T cells. Lck in T cells serves as a signalling
molecule by phosphorylating the tyrosine residue of T cell receptor in activation of T cells.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The phosphorylated tyrosine residues on activated receptor tyrosine kinases (RTKs) act as scaffolding sites to bring...
The phosphorylated tyrosine residues on activated receptor tyrosine kinases (RTKs) act as scaffolding sites to bring together downstream signaling proteins. What do you think would be the advantage(s) of bringing proteins of the same signaling pathway in close physical proximity to each other?
1- Nonreceptor tyrosine kinases are: Select one: a. Transmembrane receptors b. Membrane proteins with no enzymatic...
1- Nonreceptor tyrosine kinases are: Select one: a. Transmembrane receptors b. Membrane proteins with no enzymatic activity c. Enzymes that phosphorylate serine and threonine residues d. Peripheral membrane enzymes that associate with receptors e. Inhibitors of transmembrane receptors 2- Which of the following statements about MAP kinase pathways is FALSE? Select one: a. MAP kinases phosphorylate serine and threonine residues b. MAP kinases can be activated by tyrosine kinases c. MAP kinases are present in all eukaryotic cells d. MAP...
LDL cholesterol is taken into the cell by receptor-mediated endocytosis. True or false
LDL cholesterol is taken into the cell by receptor-mediated endocytosis. True or false
Which of the following does NOT occur when a receptor tyrosine kinase binds its ligand? a....
Which of the following does NOT occur when a receptor tyrosine kinase binds its ligand? a. Activation of Ras. b. Dimerization of the receptor. c. Cross-phosphorylation of the receptor subunits. d. Activation of heterotrimeric G proteins. Which of the following is FALSE? a. Cells use constitutive secretion to deliver new membrane with its integral membrane proteins to the surface of the cell (plasma membrane). b. Archaeal DNA is located in the nucleus. c. Serine-Threonine kinases phosphorylate (add a phosphate to)...
Which of the following statements about induction or maintenance of T cell tolerance is NOT true?...
Which of the following statements about induction or maintenance of T cell tolerance is NOT true? a. Peripheral T cell tolerance to an antigen may be induced by persistent and repeated stimulation of lymphocytes by that antigen in tissues. b. Peripheral T cell tolerance results when T cells recognize antigen in the setting of an innate immune response to the antigen. c. Peripheral T cell tolerance to some antigens is induced when mature T cells recognize antigen and bind B7-1...
1. On which cell type is the T-cell receptor located? Macrophage Cytotoxic T-cell Antigen presenting cell...
1. On which cell type is the T-cell receptor located? Macrophage Cytotoxic T-cell Antigen presenting cell T-cell 2. What activates a Helper T-cell? Recognition of the peptide antigen that is being presented Viruses Recognition of the peptide antibody that is being presented Cytotoxic T cells
1) Superantigens cross link T cells with APC in a polyclonal, non specific fashion. a. True...
1) Superantigens cross link T cells with APC in a polyclonal, non specific fashion. a. True b. False 2) cross presentation of antigens in a special circumstance only allowed in cells that become licensed to activate Tc cells. a. True b. False 3) central tolerance refers to T cells that become anergic in centrally located tissues. a. True b. False 4) activated Th cells express the cytokine IL-2 and the high affinity receptor for IL-2.  a. True b. False
What happens to a naive T-cell when it encounters a cell that: (1) expresses an antigen...
What happens to a naive T-cell when it encounters a cell that: (1) expresses an antigen for which the T-cell receptor (TCR) has high affinity and to which the TCR strongly binds, (2) does not express MHC molecules? A. It differentiates into a cytotoxic T-cell and produces toxic molecules that kill the encountered cell. B. It is negatively selected and induced to undergo apoptosis or to become inactivated. C. It differentiates into one of the several subtypes of T-helper cells...
All questions needed. No explanation needed, just true or false. Will give humbe up for correct...
All questions needed. No explanation needed, just true or false. Will give humbe up for correct answers. a. When traction is less than contraction, the cell is spreading. True or false b. Cells that spread on three dimensional substrates maintain differentiated function better than two dimensional substrates. True or false c. Cell spreading area is proportional to cell proliferation. True ir false d. Proliferative activity of cells can be mudulated by receptor/ligand interactions. True or false e. Cells will not...
true  false   A high concentration of a hormone in the blood triggers signal amplification in all body cells....
true  false   A high concentration of a hormone in the blood triggers signal amplification in all body cells. true  false   A hormone must bind to a receptor to cause a response in a target cell. true  false   Hormones can produce the same response in different target cells.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT