1FZR

CRYSTAL STRUCTURE OF BACTERIOPHAGE T7 ENDONUCLEASE I

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 (A, B, C, D)	ENDONUCLEASE I	polymer	138	16069.6	4	UniProt (P00641) Pfam (PF05367)	Enterobacteria phage T7	ENDODEOXYRIBONUCLEASE I
2	E, F, G, H (A, B, C, D)	water	water		18.0	485	Chemie (HOH)

Sequence modifications

A, B, C, D: 12 - 149 (UniProt: P00641)

PDB	External Database	Details
Lys 65	Glu 65	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	64278.2
All*	Total formula weight	64278.2

*Water molecules are not included.