1XSD

Crystal structure of the BlaI repressor in complex with DNA

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	B	5'-D(P*TP*AP*CP*TP*AP*CP*AP*TP*AP*TP*GP*TP*AP*GP*TP*A)-3'	polymer	16	4896.2	1			mec operator DNA
2	A	penicillinase repressor	polymer	126	14988.4	1	UniProt (Q6UB84) Pfam (PF03965) UniProt (by SIFTS) (P0A042) In PDB	Staphylococcus aureus	beta-lactamase repressor
3		water	water		18.0	181	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	19884.6
All*	Total formula weight	19884.6

*Water molecules are not included.