3WH9

The ligand-free structure of ManBK from Aspergillus niger BK01

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-beta-1,4-mannanase	polymer	345	37687.0	2	UniProt (B6V876) Pfam (PF00150) UniProt (by SIFTS) (A2QKT4) In PDB	Aspergillus niger	ManBK
2	C, D	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		424.4	2	In PDB GlyTouCan (G42666HT)
3	A, B	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	2	Chemie (NAG)
4	A, B	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		122.1	2	Chemie (TRS)
5	A	CHLORIDE ION	non-polymer		35.5	1	Chemie (CL)
6		water	water		18.0	996	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	75374.1
Branched	Number of molecules	2
	Total formula weight	848.8
Non-Polymers*	Number of molecules	5
	Total formula weight	722.2
All*	Total formula weight	76945.1

*Water molecules are not included.