1B5X

Contribution of hydrogen bonds to the conformational stability of human lysozyme: calorimetry and x-ray analysis of six ser->ala mutants

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	PROTEIN (LYSOZYME)	polymer	130	14704.7	1	UniProt (P61626) Pfam (PF00062) In PDB	Homo sapiens (human)
2	A	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
3		water	water		18.0	239	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	14704.7
Non-Polymers*	Number of molecules	1
	Total formula weight	23.0
All*	Total formula weight	14727.7

*Water molecules are not included.