1F0V

Crystal structure of an Rnase A dimer displaying a new type of 3D domain swapping

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	M, N, O, P	5'-D(*CP*G)-3'	polymer	2	573.4	4
2	A, B, C, D	RIBONUCLEASE A	polymer	124	13708.3	4	UniProt (P61823) Pfam (PF00074) In PDB	Bos taurus (cattle)	RNASE 1, RNASE A
3	C, P, A, B	PHOSPHATE ION	non-polymer		95.0	4	Chemie (PO4)
4	C, D, A, B	GLYCEROL	non-polymer		92.1	24	Chemie (GOL)
5		water	water		18.0	554	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	57127.0
Non-Polymers*	Number of molecules	28
	Total formula weight	2590.1
All*	Total formula weight	59717.2

*Water molecules are not included.