= Immunoglobulin light chain
{title2=$L$}
{wiki}
An <immunoglobulin light chain> accompanies an arm of the illustrated <IgG>, contributing to its <paratope>.
Its <protein domains> are $V_L,C_L$, read from the <N-terminus>; a <Fab fragment> retains both.<Immunobiology: The Immune System in Health and Disease, 5th edition by Charles A. Janeway, Jr. and others/The structure of a typical antibody molecule>[Immunobiology: The Immune System in Health and Disease, 5th edition by Charles A. Janeway, Jr. and others; §§3-2–3-3: two light-chain domains and complete light chain in Fab]{ref}
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