1DW9

Structure of cyanase reveals that a novel dimeric and decameric arrangement of subunits is required for formation of the enzyme 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, C, D, E... (A, B, C, D, E...)	CYANATE LYASE	polymer	156	17255.4	10	UniProt (P00816) Pfam (PF21291) Pfam (PF02560)	ESCHERICHIA COLI	CYANATE HYDROLASE, CYANASE
2	AA, DA, GA, K, KA... (F, G, H, A, I...)	CHLORIDE ION	non-polymer		35.5	10	Chemie (CL)
3	BA, CA, EA, FA, HA... (F, G, H, A, I...)	SULFATE ION	non-polymer		96.1	23	Chemie (SO4)
4	AB, BB, CB, DB, EB... (E, F, G, H, I...)	water	water		18.0	1865	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	10
	Total formula weight	172553.8
Non-Polymers*	Number of molecules	33
	Total formula weight	2564.0
All*	Total formula weight	175117.7

*Water molecules are not included.