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abzyme 4 accessory molecules
Trypanosome
abzyme
The union of antibody and enzyme molecules to form a
hybrid catalytic molecule. Specificity for a target antigen is
provided through the antibody portion and for a catalytic
function through the enzyme portion. Thus, these molecules
have numerous potential uses. They are capable of catalyzing
various chemical reactions and show great promise as protein-clearing
antibodies, as in the dissolution of fibrin clots
from occluded coronary arteries in myocardial infarction.
acanthosis nigricans
A condition in which the afflicted subject develops insulin
receptor autoantibodies associated with insulin-resistant
diabetes mellitus, as well as thickened and pigmented skin.
+
H Antigen
β 1–3
A Antigen
β 1–3
B Antigen
β 1–3
Ablastin
β 1–4
α 1–2
β 1–4
α 1–2 α 1–3
β 1–3
α 1–2
α 1–3
Ablastin.
Trypanosome proliferation
No Trypanosome proliferation
= Erythrocyte
= Galactose (Gal)
= N-acetylglucosamine
(GlcNac)
= Fucose (Fuc)
= N-acetylgalacotsamine
(GalNAc)
Chemical structures of A, B, and H antigens of the ABO blood group system.
accessory cell
A cell such as a dendritic or Langerhans’ cell, monocyte,
or macrophage that facilitates T cell responses to protein
antigens. B cells may also act as antigen-presenting cells,
thereby serving an accessory cell function.
accessory molecules
Molecules other than the antigen receptor and major histocompatibility
complex (MHC) that participate in cognitive,
activation, and effector functions of T lymphocyte responsiveness.
Adhesion molecules facilitating the interaction
of T lymphocytes with other cells that signal transducing
molecules that participate in T cell activation or migration
are classified as accessory molecules. Other examples