Summary Topic 6 Antibodies

Antibodies
immunoglobulin proteins
-




4
polypeptides two
long to short
(Quaternary Structure
-
-
,



S.I units
- two
heavy , two
light




mmm)
joined by disulfice
-




bridges

-


Y-shaped hinged region
,




Variable region site
binding
-



-


different sequence of amino acid

different to shape
-




specific different antigens a
complementary shape
-




form an
antigen-antibody complex

Opsonisation
binds the
-




y-shaped antibodies
antigens on the pathogen
-


coating he pathogen

↳ attachment becomes easier
he constant region
,
phagocytosis is easier


fits
↳ into a receptor
he
on
phagocyte , now
specific




Agglutination
antibodies are diamonds

y = =


↳ togeher (sticks hem together
Agglutinates
anumpathogens
immobile