3JSP

Classic Protein With a New Twist: crystal structure of a LexA repressor DNA complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	LexA repressor	polymer	202	22330.6	2	UniProt (P0A7C2) Pfam (PF01726) Pfam (PF00717) In PDB	Escherichia coli K-12
2	C, D	DNA (5'-D(*TP*AP*TP*AP*CP*TP*GP*TP*AP*TP*GP*CP*GP*CP*AP*TP*AP*CP*AP*GP*TP*A)-3')	polymer	22	6750.4	2
3		water	water		18.0	11	Chemie (HOH)

Sequence modifications

A, B: 1 - 202 (UniProt: P0A7C2)

PDB	External Database	Details
Ala 156	Lys 156	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	58162.0
All*	Total formula weight	58162.0

*Water molecules are not included.