3H7S

Crystal structures of K63-linked di- and tri-ubiquitin reveal a highly extended chain architecture

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Ubiquitin	polymer	76	8576.8	2	UniProt (P62988) Pfam (PF00240) UniProt (by SIFTS) (P0CG48)	Homo sapiens (Human)
2	C, D, E, F, G... (A, B)	ZINC ION	non-polymer		65.4	10	Chemie (ZN)
3	M, N (A, B)	water	water		18.0	47	Chemie (HOH)

Sequence modifications

A, B: 1 - 76 (UniProt: P62988)

PDB	External Database	Details
Arg 63	Lys 63	microheterogeneity

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	17153.7
Non-Polymers*	Number of molecules	10
	Total formula weight	654.1
All*	Total formula weight	17807.8

*Water molecules are not included.