3IXO

Crystal Structure of uncomplexed HIV_1 Protease Subtype A

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	HIV-1 protease	polymer	99	10769.7	2	UniProt (Q9WEZ1) Pfam (PF00077) UniProt (by SIFTS) (P04588)	Human immunodeficiency virus 1
2	C, D (A, B)	water	water		18.0	107	Chemie (HOH)

Sequence modifications

A, B: 1 - 99 (UniProt: Q9WEZ1)

PDB	External Database	Details
Glu 35	Asp 35	variant
Ser 81	Pro 81	variant

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	21539.5
All*	Total formula weight	21539.5

*Water molecules are not included.