6PYD

Structure of 3E9 antibody Fab bound to marinobufagenin

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C (H, A)	3E9 anti-marinobufagenin antibody Fab heavy chain, recloned with human IgG4 C region	polymer	222	24185.9	2		Mus musculus (mouse)
2	B, D (L, B)	3E9 antibody Fab light chain	polymer	219	24077.9	2		Mus musculus (mouse)
3	E, F (H, B)	(3beta,5beta,14alpha,15beta)-3,5-dihydroxy-14,15-epoxybufa-20,22-dienolide	non-polymer		400.5	2	Chemie (P4S)
4	G, H, I, J (H, L, A, B)	water	water		18.0	445	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	96527.6
Non-Polymers*	Number of molecules	2
	Total formula weight	801.0
All*	Total formula weight	97328.6

*Water molecules are not included.