2N3U

Solution structure of the Rpn1 T1 site engaging two monoubiquitin molecules

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	26S proteasome regulatory subunit RPN1	polymer	131	13636.6	1	UniProt (P38764) Pfam (PF01851) In PDB	Saccharomyces cerevisiae (Baker's yeast)	HMG-CoA reductase degradation protein 2, Proteasome non-ATPase subunit 1
2	B, C	Ubiquitin-60S ribosomal protein L40	polymer	76	8576.8	2	UniProt (P62987) Pfam (PF00240) In PDB	Homo sapiens (human)	CEP52, Ubiquitin A-52 residue ribosomal protein fusion product 1, Ubiquitin, 60S ribosomal protein L40

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	30790.3
All*	Total formula weight	30790.3

*Water molecules are not included.