1EKE

CRYSTAL STRUCTURE OF CLASS II RIBONUCLEASE H (RNASE HII) WITH MES LIGAND

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)	RIBONUCLEASE HII	polymer	230	26693.6	2	UniProt (Q57599) Pfam (PF01351)	Methanocaldococcus jannaschii
2	C, D (A, B)	2-(N-MORPHOLINO)-ETHANESULFONIC ACID	non-polymer		195.2	2	Chemie (MES)
3	E, F (A, B)	water	water		18.0	313	Chemie (HOH)

Sequence modifications

A, B: 1 - 230 (UniProt: Q57599)

PDB	External Database	Details
Mse 1	Met 1	modified residue
Mse 18	Met 18	modified residue
Mse 76	Met 76	modified residue

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	53387.2
Non-Polymers*	Number of molecules	2
	Total formula weight	390.5
All*	Total formula weight	53777.7

*Water molecules are not included.