2I9U

Crystal Structure of Guanine Deaminase from C. acetobutylicum with bound guanine in the active site

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Cytosine/guanine deaminase related protein	polymer	439	49941.2	2	UniProt (Q97MB6) Pfam (PF01979) In PDB	Clostridium acetobutylicum
2	A, B	FE (III) ION	non-polymer		55.8	2	Chemie (FE)
3	A, B	GUANINE	non-polymer		151.1	2	Chemie (GUN)
4	A	GLYCEROL	non-polymer		92.1	1	Chemie (GOL)
5		water	water		18.0	420	Chemie (HOH)

Sequence modifications

A, B: 5 - 431 (UniProt: Q97MB6)

PDB	External Database	Details
Met 1	-	initiating methionine
Ser 2	-	cloning artifact
Leu 3	-	cloning artifact
Leu 4	-	cloning artifact
Glu 432	-	cloning artifact
Gly 433	-	cloning artifact
His 434	-	expression tag
His 435	-	expression tag
His 436	-	expression tag
His 437	-	expression tag
His 438	-	expression tag
His 439	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	99882.4
Non-Polymers*	Number of molecules	5
	Total formula weight	506.0
All*	Total formula weight	100388.5

*Water molecules are not included.