4QKO

The Crystal Structure of the Pyocin S2 Nuclease Domain, Immunity Protein Complex at 1.8 Angstroms

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C, E, G (A, C, E, G)	Pyocin-S2 immunity protein	polymer	95	11127.5	4	UniProt (Q06579) Pfam (PF01320)	Pseudomonas aeruginosa
2	B, D, F, H (B, D, F, H)	Pyocin-S2	polymer	134	14517.4	4	UniProt (Q06584) Pfam (PF21431)	Pseudomonas aeruginosa	Killer protein
3	AA, BA, CA, DA, EA... (E, F, A, B, G...)	BROMIDE ION	non-polymer		79.9	35	Chemie (BR)
4	JA, O, UA, Y (F, B, H, D)	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
5	AB, BB, CB, VA, WA... (F, G, H, A, B...)	water	water		18.0	815	Chemie (HOH)

Sequence modifications

A, C, E, G: 1 - 87 (UniProt: Q06579)

PDB	External Database	Details
Leu 88	-	expression tag
Glu 89	-	expression tag
His 90	-	expression tag
His 91	-	expression tag
His 92	-	expression tag
His 93	-	expression tag
His 94	-	expression tag
His 95	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	102579.6
Non-Polymers*	Number of molecules	39
	Total formula weight	2893.9
All*	Total formula weight	105473.5

*Water molecules are not included.