3OEA

Crystal structure of the Q121E mutants of C.polysaccharolyticus CBM16-1 bound to cellopentaose

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	S-layer associated multidomain endoglucanase	polymer	146	16050.8	2	UniProt (Q9ZA17) Pfam (PF02018) In PDB	Caldanaerobius polysaccharolyticus
2	C, D	beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-alpha-D-glucopyranose	branched		828.7	2	In PDB GlyTouCan (G75287MT)
3	A, B	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
4		water	water		18.0	497	Chemie (HOH)

Sequence modifications

A, B: 2 - 144 (UniProt: Q9ZA17)

PDB	External Database	Details
Ser -1	-	expression tag
His 0	-	expression tag
Met 1	-	expression tag
Glu 121	Gln 733	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	32101.6
Branched	Number of molecules	2
	Total formula weight	1657.4
Non-Polymers*	Number of molecules	2
	Total formula weight	80.2
All*	Total formula weight	33839.2

*Water molecules are not included.