4EIB

Crystal Structure of Circular Permuted CBM21 (CP90) Gives Insight into the Altered Selectivity on Carbohydrate Binding.

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)	Glucoamylase	polymer	109	12063.1	2	UniProt (B7XC04) Pfam (PF03370)	Rhizopus oryzae
2	C, D, F, R, S... (A, B)	SULFATE ION	non-polymer		96.1	6	Chemie (SO4)
3	E, HA, IA, U (A, B)	AMMONIUM ION	non-polymer		18.0	4	Chemie (NH4)
4	AA, G, H, I, J... (B, A)	SODIUM ION	non-polymer		23.0	12	Chemie (NA)
5	BA, CA, DA, EA, FA... (B, A)	CHLORIDE ION	non-polymer		35.5	10	Chemie (CL)
6	Q (A)	ACETATE ION	non-polymer		59.0	1	Chemie (ACT)
7	JA, KA (A, B)	water	water		18.0	94	Chemie (HOH)

Sequence modifications

A, B: 2 - 18 (UniProt: B7XC04)

PDB	External Database	Details
Met 1	-	expression tag

A, B: 21 - 109 (UniProt: B7XC04)

PDB	External Database	Details
His 19	-	SEE REMARK 999
Met 20	-	SEE REMARK 999

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	24126.2
Non-Polymers*	Number of molecules	33
	Total formula weight	1338.0
All*	Total formula weight	25464.2

*Water molecules are not included.