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The HLA class I gene family is composed of a group of genes whose products encode cell surface glycoproteins of MW 40-45 kDa, associated non-covalently with the beta-2-microglobulin light chain. They include the three polymorphic molecules HLA-A, -B, and -C, which are ubiquitously expressed and which are able to present intracellular peptides to cytotoxic T cells. Three additional class I genes are known, commonly referred to as non-classical or class Ib genes, all highly homologous to the other class I genes and all of which associate with beta-2-microglobulin light chain. In humans, each of the class Ib genes appears to exhibit a distinct pattern of expression in developing and adult tissues. HLA-E transcripts are distributed widely in adult tissues and have also been found in the placenta and fetal liver. In the adult, the presence of HLA-F has been shown in skin, resting T cells, and B cells, whereas its expression during development has been reported in fetal liver and at low levels in placenta and extra-placental tissues. HLA-G was originally thought to be expressed only in certain populations of placental trophoblasts, but low levels have also been found in a variety of human tissues. Recently it was shown that HLA class I expression in breast cancer cells can have a predictive value for chemotherapy response. HLA and MHC antibodies play a significant role in Immunopeptidomics, facilitating the identification and characterization of neoantigens through high-performance liquid chromatography coupled to tandem Mass Spectrometry.
A29 protein; antigen presenting molecule; Aw-33; Aw-74; HLA A; HLA class I antigen; HLA class I histocompatibility antigen, A alpha chain; HLA class I histocompatibility antigen, A-1 alpha chain; HLA class I histocompatibility antigen, A-30 alpha chain; HLA class I histocompatibility antigen, A-33 alpha chain; HLA class I histocompatibility antigen, A-74 alpha chain; HLA locus; HLAA; HLA-A; HLA-A locus alpha 2 domain; HLA-A null; HLA-A11; HLA-A33; HLA-Aw33.1; HLA-DQB1; HLA-DRB1; Human leukocyte antigen A; leukocyte antigen class I-A; major histocompatibility complex, class I, A; MCH class I antigen; MHC class 1 antigen; MHC class I anti; MHC Class I antigen; MHC class I antigen A*30; MHC class I antigen A*33; MHC class I antigen A*74; MHC class I antigen heavy chain; MHC class I antigen HLA-A heavy chain; MHC class I antigen HLA-A33; MHC class I antigen null protein; MHC class I antigene; MHC class II antigen; MHC classI antigen; truncated MHC class I antigen
100 µg
100 µg
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