CITA/NLRC5: A critical transcriptional regulator of MHC class I gene expression

Major histocompatibility complex (MHC) class I and class II molecules play essential roles in the development and activation of the human adaptive immune system. An NLR protein, CIITA (MHC class II transactivator) has been recognized as a master regulator of MHC class II gene expression, albeit know...

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Veröffentlicht in:BioFactors (Oxford) 2016-07, Vol.42 (4), p.349-357
Hauptverfasser: Downs, Isaac, Vijayan, Saptha, Sidiq, Tabasum, Kobayashi, Koichi S.
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container_issue 4
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container_title BioFactors (Oxford)
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creator Downs, Isaac
Vijayan, Saptha
Sidiq, Tabasum
Kobayashi, Koichi S.
description Major histocompatibility complex (MHC) class I and class II molecules play essential roles in the development and activation of the human adaptive immune system. An NLR protein, CIITA (MHC class II transactivator) has been recognized as a master regulator of MHC class II gene expression, albeit knowledge about the regulatory mechanism of MHC class I gene expression had been limited. Recently identified MHC class I transactivator (CITA), or NLRC5, also belongs to the NLR protein family and constitutes a critical regulator for the transcriptional activation of MHC class I genes. In addition to MHC class I genes, CITA/NLRC5 induces the expression of β2‐microglobulin, TAP1 and LMP2, essential components of the MHC class I antigen presentation pathway. Therefore, CITA/NLRC5 and CIITA are transcriptional regulators that orchestrate the concerted expression of critical components in the MHC class I and class II pathways, respectively. © 2016 BioFactors, 42(4):349–357, 2016
doi_str_mv 10.1002/biof.1285
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subjects Animals
CIITA
Gene Expression
Gene Expression Regulation
Genes, MHC Class I
Humans
Intracellular Signaling Peptides and Proteins - physiology
MHC class I
NLR proteins
NLRC5
title CITA/NLRC5: A critical transcriptional regulator of MHC class I gene expression
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