The SRP and the nascent polypeptide chain–ribosome complex bind to the SRP receptor in the ER membrane. This interaction is strengthened by the binding of GTP to both the SRP and its receptor.

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#Section 2: General Biology

B cell is type of lymphocyte.

B cell synthesized and maturation in bone marrow.

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#Section 2: General Biology

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#Section 2: General Biology

They are pAPCs

Have surface marker  CD19

Antibodies at surface of b cell – IgM, IgD

Cause humoral immunity or antibodies mediated immunity

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#Section 2: General Biology

Surface protein on B cell

CR2(CR21)

CD19

TAPA-1(CD81)

mIg 

Igα/ Igβ

(CD79a and CD79B)

TLR

CD40

B7(CD80/86)

ICAM-1

MHC-1 and 2 both

CD 22

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Step involve in formation of mature B-cell

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#Section 2: General Biology