2ZUS

Crystal structure of Galacto-N-biose/Lacto-N-biose I phosphorylase

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	Lacto-N-biose phosphorylase	polymer	759	85484.1	4	UniProt (Q5NU17) Pfam (PF09508) Pfam (PF17385) Pfam (PF17386) UniProt (by SIFTS) (E8MF13)	Bifidobacterium longum	Galacto-N-biose/Lacto-N-biose I phosphorylase
2	E, F (B, D)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
3	G, H, I, J (A, B, C, D)	water	water		18.0	1898	Chemie (HOH)

Sequence modifications

A, B, C, D: 1 - 751 (UniProt: Q5NU17)

PDB	External Database	Details
Leu 752	-	expression tag
Glu 753	-	expression tag
His 754	-	expression tag
His 755	-	expression tag
His 756	-	expression tag
His 757	-	expression tag
His 758	-	expression tag
His 759	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	341936.2
Non-Polymers*	Number of molecules	2
	Total formula weight	48.6
All*	Total formula weight	341984.9

*Water molecules are not included.