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#1229 IPR019538 protein binding involved in protein folding?
IPR019538
I'm not sure about this. It seems to be a chaperone involved in "assembly" rather than folding?
Perhaps the description should be changedto reflect this (it doesn't appear to be a regulatory subunit as far as I can see, as it isn't part of the final complex?)
Yes, the 'protein binding involved in protein folding' is quite missleading, I have removed it and added the term for process 'proteasome assembly'. The name '26S Proteasome Non-ATPase Regulatory Subunit' is the one chosen by Uniprot, it is also called '26S Proteasome Subunit S5B'. It might have some indirect regulatory role in higher eukaryotes through TNF-a (PMID:22921402, Role of S5b/PSMD5 in Proteasome Inhibition Caused by TNF-a/NFkB in Higher Eukaryotes)