PSMD2
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26S proteasome non-ATPase regulatory subunit 2, also as known as 26S Proteasome Regulatory Subunit Rpn1 (systematic nomenclature), is an enzyme that in humans is encoded by the PSMD2 gene.
26S proteasome non-ATPase regulatory subunit 2, also as known as 26S Proteasome Regulatory Subunit Rpn1 (systematic nomenclature), is an enzyme that in humans is encoded by the PSMD2 gene. ==Structure== === Gene expression=== The gene PSMD2 encodes a non-ATPase subunit of the 19S regulator base, which is responsible for substrate recognition and binding. The gene PSMD2 encodes one of the non-ATPase subunits of the 19S regulator lid. In addition to participation in proteasome function, this subunit may also participate in the TNF signalling pathway since it interacts with the tumor necrosis factor type 1 receptor. A pseudogene has been identified on chromosome 1. The human PSMD2 gene has 23 exons and locates at chromosome band 3q27.1. The human protein 26S proteasome non-ATPase regulatory subunit 2 is 100 kDa in size and composed of 909 amino acids. The calculated theoretical pI of this protein is 5.10. Two expression isoforms are generated by alternative splicing, in which either 1-130 or 1-163 of the amino acid sequence is missing.
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