- published: 24 Dec 2013
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An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein produced mainly by plasma cells that is used by the immune system to identify and neutralize pathogens such as bacteria and viruses. The antibody recognizes a unique molecule of the harmful agent, called an antigen, via the variable region. Each tip of the "Y" of an antibody contains a paratope (analogous to a lock) that is specific for one particular epitope (similarly analogous to a key) on an antigen, allowing these two structures to bind together with precision. Using this binding mechanism, an antibody can tag a microbe or an infected cell for attack by other parts of the immune system, or can neutralize its target directly (for example, by blocking a part of a microbe that is essential for its invasion and survival). The ability of an antibody to communicate with the other components of the immune system is mediated via its Fc region (located at the base of the "Y"), which contains a conserved glycosylation site involved in these interactions. The production of antibodies is the main function of the humoral immune system.
www.salmonellaplace.com This is a Biology tutorial explaining what Antibodies are. We cover some topics important for classes such as Biology, Biochemistry, Hitsology etc. If you have any questions, don't be shy!! We hope we are able to clarify this topic. Enjoy! Plus, don't forget to SUBSCRIBE for more! Facebook: www.facebook.com/salmonellaplace Twitter: www.twitter.com/thesalmonella Tumblr: www.salmonellaplace.tumblr.com Check out www.somersault1824.com for the best library of scientific illustrations.
◅ Donate: http://www.5minuteschool.com/donate ◅ Website: htttp://www.5minuteschool.com ◅ Twitter: http://www.twitter.com/5minuteschool ◅ Facebook: http://www.facebook.com/5minuteschool ◅ Email: contact@5minuteschool.com In this video, we explain the basics of Antibodies in less than 5 minutes. Antibodies, otherwise known as Immunoglobulins are important elements of the Immune System. We talk about Antigens, Plasma Cells and much more Please subscribe for more videos and comment if you need any help
15) The core of adaptive immunity: immunoglobulin antibodies The immune system depends on special binding molecules known as immunoglobulins, also referred to as "antibodies" or "Ig" for short. Immunoglobulins are "Y" shaped molecules that connect on one end to invading microbes (antigens) and on the other end they bind with various white cells that effectivley block and destroy the antigen. These specialized antibody molecules come in different shapes and sizes in order to provide flexibility in matching and destroying targeted antigens. Antibody molecules are found floating in the plasma as well as on the surface of specialized B-cells. Immunoglobulins are constructed from two types of amino acid chains, heavy chains and light chains. Ig molecules contain two identical strands of heav...
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This lecture explains about the antibody structure and function. It explains the role of different structures of antibody to reflect its function. Comparative study between all the common types of antibody are explained in this video such as - Antibody a, antibody g, antibody m, antibody d and antibody e. These antibodies contain a structure made up with two immunoglobulin chain. One heavy chain and one light chain. Rearrangement of gene in variable region provide the b cell many choices to make all the varieties of antibody structures. Antibody A is known as the secretary antibody while Ig G is the most predominant form. These antibodies are also known as immunoglobulin or referred as Ig in short. Watch this video lecture to understand about the structure and function of antibody or imm...
What are antibodies? Each and every day our bodies are attacked by billions of microscopic invaders. Bacteria, viruses, fungi, and even parasites are found both on and in our bodies. Even frequent bathing doesn't rid us of all of these potential disease-causing threats. To put things in perspective, the human colon contains 10 times as many bacterial cells as there are human cells in the entire human body. That's 10 trillion bacterial cells compared with 1 trillion human cells, for those who are counting. So humans are basically oversized bacteria buses. Fortunately, our skin and mucosal surfaces provide the first line of defense against these little buggers. Nonetheless, some of these little guys make it into our bloodstream each time we scrape our skin or even when we brush our teet...
In this animation, we will explain what antibodies are, how they are made and how they are most commonly used in laboratory research.
We need bodies and we need words to replace
the lines repeated, steps retraced
I'll take office if that's enough
and order my city to swallow yours up
we're antibodies living off
throw it overarm
We're not gonna forfeit the summer for sake of others