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Gene Review

Psmb8  -  proteasome (prosome, macropain) subunit,...

Mus musculus

Synonyms: Lmp-7, Lmp7, Low molecular mass protein 7, Macropain subunit C13, Mc13, ...
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High impact information on Psmb8

  • The Lmp-2 and Lmp-7 gene products are two subunits of the large cytosolic proteasome complex possibly involved in generation of endogenous peptides [1].
  • Time-course analysis of IFN-gamma-regulated mRNA expression of the two intra-MHC-encoded subunits of the proteasome (low-molecular-mass polypeptide [Lmp]-2 and Lmp-7) revealed a correlation between their induction and the inhibitory effects of IFN-gamma on glucose-stimulated insulin production [2].
  • Genetic polymorphism of the mouse major histocompatibility complex-associated proteasome subunit Lmp7 [3].
  • Thus, the Tap-1 3' end gene region and the Lmp-7 initial translation codon are separated by an 1182 nucleotide region which contains a TATA-box, a cAMP regulatory element, two SP1 sites, and two G-C-rich regions [4].
  • Here we report the genomic organization of the mouse Lmp-7 gene and the tissue distribution of its messenger RNA [4].

Anatomical context of Psmb8

  • Lmp-7 messenger RNA is expressed in spleen, thymus, lung, liver, heart, and, at a very low level, in kidney but not in brain and testis [4].
  • The MAb, Mc13, as well as the previously reported MAb McR2, both against the 70,000 dalton component, did not significantly stain either normal or cancerous breast tissue in histological sections but did bind significantly to cultured breast epithelial cells and to the milk fat globule membrane [5].


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