4R62

Structure of Rad6~Ub

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Ubiquitin-conjugating enzyme E2 2	polymer	172	19751.7	1	UniProt (P06104) Pfam (PF00179) In PDB	Saccharomyces cerevisiae (Baker's yeast)	Radiation sensitivity protein 6, Ubiquitin carrier protein UBC2, Ubiquitin-protein ligase UBC2
2	B	Ubiquitin-40S ribosomal protein S27a	polymer	78	8818.1	1	UniProt (P62979) Pfam (PF00240) In PDB	Homo sapiens (human)	Ubiquitin carboxyl extension protein 80, Ubiquitin, 40S ribosomal protein S27a
3	A	ACETATE ION	non-polymer		59.0	1	Chemie (ACT)
4		water	water		18.0	12	Chemie (HOH)

Sequence modifications

A: 1 - 172 (UniProt: P06104)

PDB	External Database	Details
Lys 88	Cys 88	engineered mutation

B: 1 - 76 (UniProt: P62979)

PDB	External Database	Details
Ile -1	-	expression tag
Gln 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	28569.8
Non-Polymers*	Number of molecules	1
	Total formula weight	59.0
All*	Total formula weight	28628.9

*Water molecules are not included.