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=[Image:Opening 1igt.png|450px|left|thumb| Intact Immunoglobulin, 1igt]]
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| Crystal Structure of the Intact Human IGG B12: A Template for a Potential HIV Vaccine, 1hzh | |||||||||
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| Ligands: | , , , , | ||||||||
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| Resources: | FirstGlance, OCA, RCSB, PDBsum | ||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||
Antibodies, also known as Immunoglobulins (Ig) are gamma globulin proteins, primarily found in the blood of vertebrates. These glycoproteins serve as a critical component of the immune system when the host fails to activate alternative compliment pathways or phagocytic cells in response to invading microorganisms or other antigens. The incredible specificity with which immunoglobulins bind to an antigen is based upon structural complementarity between the antigen and antibody and . It is this specificity that has made a critical component in laboratory and medical research.
