1SQN

Progesterone Receptor Ligand Binding Domain with bound Norethindrone

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	progesterone receptor	polymer	261	30134.3	2	UniProt (P06401) Pfam (PF00104) In PDB	Homo sapiens (human)	PR
2	A, B	(14beta,17alpha)-17-ethynyl-17-hydroxyestr-4-en-3-one	non-polymer		298.4	2	Chemie (NDR)
3		water	water		18.0	276	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	60268.6
Non-Polymers*	Number of molecules	2
	Total formula weight	596.8
All*	Total formula weight	60865.4

*Water molecules are not included.