4O8J

Crystal structure of RtcA, the RNA 3'-terminal phosphate cyclase from Pyrococcus horikoshii, in complex with rACAAA3'phosphate and adenine.

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)	RNA 3'-terminal phosphate cyclase	polymer	341	37221.1	2	UniProt (O59198)	Pyrococcus horikoshii	RNA cyclase, RNA-3'-phosphate cyclase
2	C, D (D, E)	RNA	polymer	6	1906.3	2
3	E, F (A, B)	ADENOSINE	non-polymer		267.2	2	Chemie (ADN)
4	G (B)	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID	non-polymer		238.3	1	Chemie (EPE)
5	H, I, J, K (A, B, D, E)	water	water		18.0	610	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	78254.7
Non-Polymers*	Number of molecules	3
	Total formula weight	772.8
All*	Total formula weight	79027.5

*Water molecules are not included.