8VLM

Crystal structure of the yeast cytosine deaminase (yCD) E64V-M100W heterodimer

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Cytosine deaminase	polymer	180	19868.7	2	UniProt (Q12178) In PDB	Saccharomyces cerevisiae (brewer's yeast)	yCD,Cytosine aminohydrolase,Fluorocytosine resistance protein 1
2	B, D	Cytosine deaminase	polymer	178	19756.4	2	UniProt (Q12178) In PDB	Saccharomyces cerevisiae (brewer's yeast)	yCD,Cytosine aminohydrolase,Fluorocytosine resistance protein 1
3	A, B, C, D	ZINC ION	non-polymer		65.4	4	Chemie (ZN)
4	B, C, D	1,2-ETHANEDIOL	non-polymer		62.1	4	Chemie (EDO)
5		water	water		18.0	30	Chemie (HOH)

Sequence modifications

A, C: 1 - 158 (UniProt: Q12178)

PDB	External Database	Details
Met -21	-	initiating methionine
Gly -20	-	expression tag
Ser -19	-	expression tag
Ala -18	-	expression tag
Trp -17	-	expression tag
Ser -16	-	expression tag
His -15	-	expression tag
Pro -14	-	expression tag
Gln -13	-	expression tag
Phe -12	-	expression tag
Glu -11	-	expression tag
Lys -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
Leu -6	-	expression tag
Val -5	-	expression tag
Pro -4	-	expression tag
Arg -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag
Val 64	Glu 64	engineered mutation

B, D: 1 - 158 (UniProt: Q12178)

PDB	External Database	Details
Met -19	-	initiating methionine
Gly -18	-	expression tag
Ser -17	-	expression tag
Ser -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
Leu -6	-	expression tag
Val -5	-	expression tag
Pro -4	-	expression tag
Arg -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag
Trp 100	Met 100	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	79250.1
Non-Polymers*	Number of molecules	8
	Total formula weight	509.9
All*	Total formula weight	79760.0

*Water molecules are not included.