4NEJ

Small molecular fragment bound to crystal contact interface of Interleukin-2

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Interleukin-2	polymer	130	15150.6	1	UniProt (Q6QWN0) Pfam (PF00715) UniProt (by SIFTS) (P60568) In PDB	Homo sapiens (human)
2	A	5-methylfuran-2-carboxylic acid	non-polymer		126.1	2	Chemie (2K1)
3		water	water		18.0	72	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	15150.6
Non-Polymers*	Number of molecules	2
	Total formula weight	252.2
All*	Total formula weight	15402.8

*Water molecules are not included.