4XQD

X-ray structure analysis of xylanase-WT at pH4.0

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Endo-1,4-beta-xylanase 2	polymer	189	20727.3	2	UniProt (P36217) Pfam (PF00457) In PDB	Hypocrea jecorina	Xylanase 2,1,4-beta-D-xylan xylanohydrolase 2
2	A, B	IODIDE ION	non-polymer		126.9	6	Chemie (IOD)
3	A	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		122.1	1	Chemie (TRS)
4		water	water		18.0	459	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	41454.7
Non-Polymers*	Number of molecules	7
	Total formula weight	883.6
All*	Total formula weight	42338.2

*Water molecules are not included.