7XTJ

Crystal structure of E88A mutant of GH3 beta-xylosidase from Aspergillus niger (AnBX)

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)	Xylan 1,4-beta-xylosidase	polymer	788	85819.6	2	UniProt (A0A023J5W7) Pfam (PF00933) Pfam (PF01915) Pfam (PF14310)	Aspergillus niger
2	C, E (C, E)	alpha-D-mannopyranose-(1-2)-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		1073.0	2	In PDB GlyTouCan (G56014GC)
3	D (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	F (F)	beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		586.5	1	In PDB GlyTouCan (G15407YE)
5	G, H, I, J, L... (A, B)	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	9	Chemie (NAG)
6	K, Q (A, B)	GLYCEROL	non-polymer		92.1	2	Chemie (GOL)
7	R, S (A, B)	water	water		18.0	33	Chemie (HOH)

Sequence modifications

A, B: 1 - 777 (UniProt: A0A023J5W7)

PDB	External Database	Details
Ala -10	-	expression tag
His -9	-	expression tag
His -8	-	expression tag
His -7	-	expression tag
His -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
Ala -1	-	expression tag
Ala 0	-	expression tag
Ala 88	Glu 88	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	171639.2
Branched	Number of molecules	4
	Total formula weight	3156.9
Non-Polymers*	Number of molecules	11
	Total formula weight	2175.1
All*	Total formula weight	176971.1

*Water molecules are not included.