The T cell receptor (TCR)complex contains:
A)A highly variable antigen coreceptor
B)CD28
C)Three homologous CD3 chains,each covalently linked to the TCR$\alpha$$\beta$heterodimer
D)Invariable $\alpha$$\beta$chains noncovalently linked to the TCR $\alpha$$\beta$ heterodimer
E)Ig$\beta$

Question

The T cell receptor (TCR)complex contains:
A)A highly variable antigen coreceptor
B)CD28
C)Three homologous CD3 chains,each covalently linked to the TCR$\alpha$$\beta$heterodimer
D)Invariable $\alpha$$\beta$chains noncovalently linked to the TCR  $\alpha$$\beta$ heterodimer
E)Ig$\beta$

Quizplus · Accepted Answer

The T cell receptor (TCR)complex contains a highly variable antigen receptor,usually composed of a heterodimer of$\alpha$ and $\beta$ chains,called the TCR,which is responsible for antigen recognition,as well as invariant signaling proteins,CD3$\delta$,CD3?,and CD3$\lambda$,and the $\zeta$protein.These signaling molecules are all noncovalently associated with the TCR.Coreceptors for T cells include CD4 and CD8;these are invariant proteins and are not part of the TCR complex itself.CD28 is involved in T cell costimulation,but it is not a member of the TCR complex.Ig$\beta$is a component of the B lymphocyte antigen receptor complex.

The T Cell Receptor (TCR)complex Contains: A)A Highly Variable Antigen α\alphaα

The T Cell Receptor (TCR)complex Contains:
A)A Highly Variable Antigen $\alpha$