4TRA

RESTRAINED REFINEMENT OF TWO CRYSTALLINE FORMS OF YEAST ASPARTIC ACID AND PHENYLALANINE TRANSFER RNA CRYSTALS

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	TRNAPHE	polymer	76	24890.1	1		Saccharomyces cerevisiae (baker's yeast)
2	A	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
3		water	water		18.0	123	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	24890.1
Non-Polymers*	Number of molecules	4
	Total formula weight	97.2
All*	Total formula weight	24987.3

*Water molecules are not included.