3QSV

Structural basis for DNA recognition by constitutive Smad4 MH1 dimers

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	Mothers against decapentaplegic homolog 4	polymer	132	15022.3	4	UniProt (P97471) Pfam (PF03165)	Mus musculus (mouse)	Smad4
2	E, F, G, H (E, F, G, H)	DNA (5'-D(P*TP*GP*CP*AP*GP*TP*CP*TP*AP*GP*AP*CP*TP*GP*CP*A)-3')	polymer	16	4898.2	4
3	I, J, K, L (A, B, C, D)	ZINC ION	non-polymer		65.4	4	Chemie (ZN)
4	M, N, O, P, Q (A, B, C, E, H)	water	water		18.0	9	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	79682.0
Non-Polymers*	Number of molecules	4
	Total formula weight	261.6
All*	Total formula weight	79943.6

*Water molecules are not included.