5IFP

STRUCTURE OF BETA-GALACTOSIDASE FROM ASPERGILLUS NIGER

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	beta-galactosidase A	polymer	1013	110628.8	1	UniProt (A2QAN3) Pfam (PF01301) Pfam (PF10435) Pfam (PF13363) Pfam (PF13364) In PDB	Aspergillus niger CBS 513.88	Lactase A
2	B, C	alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		1397.2	2	In PDB GlyTouCan (G83582BK)
3	D	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		424.4	1	In PDB GlyTouCan (G42666HT)
4	E	alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		1073.0	1	In PDB GlyTouCan (G01760ZU)
5	A	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	6	Chemie (NAG)
6	A	SULFATE ION	non-polymer		96.1	2	Chemie (SO4)
7	A	CHLORIDE ION	non-polymer		35.5	1	Chemie (CL)
8	A	2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		209.2	1	Chemie (BTB)
9	A	GLYCEROL	non-polymer		92.1	5	Chemie (GOL)
10		water	water		18.0	1011	Chemie (HOH)

Sequence modifications

A: 1 - 1007 (UniProt: A2QAN3)

PDB	External Database	Details
His 1008	-	expression tag
His 1009	-	expression tag
His 1010	-	expression tag
His 1011	-	expression tag
His 1012	-	expression tag
His 1013	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	110628.8
Branched	Number of molecules	4
	Total formula weight	4291.9
Non-Polymers*	Number of molecules	15
	Total formula weight	2224.5
All*	Total formula weight	117145.2

*Water molecules are not included.