A protein of the globulin-type found in serum
or other body fluids that possesses antibody
activity. An individual Ig molecule is built up from two light
) and two heavy
) polypeptide chains linked together by disulfide bonds.
s are divided into five classes based on antigenic and structural differences in the H chains.
PAC, 1992, 64, 143
(Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992))
on page 157
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook