1SWZ

Use of an ion-binding site to bypass the 1000-atom limit to ab initio structure determination by direct methods

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Lysozyme	polymer	164	18590.4	1	UniProt (P00720) Pfam (PF00959) In PDB	Enterobacteria phage T4	Lysis protein, Muramidase, Endolysin
2	A	PHOSPHATE ION	non-polymer		95.0	1	Chemie (PO4)
3	A	RUBIDIUM ION	non-polymer		85.5	5	Chemie (RB)
4	A	CHLORIDE ION	non-polymer		35.5	4	Chemie (CL)
5	A	BETA-MERCAPTOETHANOL	non-polymer		78.1	2	Chemie (BME)
6		water	water		18.0	297	Chemie (HOH)

Sequence modifications

A: 1 - 164 (UniProt: P00720)

PDB	External Database	Details
Ala 72	Asp 72	engineered mutation
Glu 96	Arg 96	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	18590.4
Non-Polymers*	Number of molecules	12
	Total formula weight	820.4
All*	Total formula weight	19410.8

*Water molecules are not included.