1XYA

X-RAY CRYSTALLOGRAPHIC STRUCTURES OF D-XYLOSE ISOMERASE-SUBSTRATE COMPLEXES POSITION THE SUBSTRATE AND PROVIDE EVIDENCE FOR METAL MOVEMENT DURING CATALYSIS

Replaces:  3XIA

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)	XYLOSE ISOMERASE	polymer	386	42844.8	2	UniProt (P15587) Pfam (PF01261)	Streptomyces olivochromogenes
2	C, D, F, G (A, B)	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
3	E, H (A, B)	HYDROXIDE ION	non-polymer		17.0	2	Chemie (OH)
4	I, J (A, B)	water	water		18.0	496	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	85689.7
Non-Polymers*	Number of molecules	6
	Total formula weight	131.2
All*	Total formula weight	85820.9

*Water molecules are not included.