1RSM

THE 2-ANGSTROMS RESOLUTION STRUCTURE OF A THERMOSTABLE RIBONUCLEASE A CHEMICALLY CROSS-LINKED BETWEEN LYSINE RESIDUES 7 AND 41

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	RIBONUCLEASE A	polymer	124	13708.3	1	UniProt (P61823) Pfam (PF00074) In PDB	Bos taurus (cattle)
2	A	DINITROPHENYLENE	non-polymer		168.1	1	Chemie (NIN)
3		water	water		18.0	75	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	13708.3
Non-Polymers*	Number of molecules	1
	Total formula weight	168.1
All*	Total formula weight	13876.4

*Water molecules are not included.