1NLA

Solution Structure of Switch Arc, a Mutant with 3(10) Helices Replacing a Wild-Type Beta-Ribbon

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)	Transcriptional repressor arc	polymer	64	7705.8	2	UniProt (P03050) Pfam (PF03869)	Enterobacteria phage P22

Sequence modifications

A, B: 1 - 53 (UniProt: P03050)

PDB	External Database	Details
Leu 11	Asn 11	engineered mutation
Asn 12	Leu 12	engineered mutation
His 54	-	expression tag
His 55	-	expression tag
His 56	-	expression tag
His 57	-	expression tag
His 58	-	expression tag
His 59	-	expression tag
Lys 60	-	expression tag
Asn 61	-	expression tag
Gln 62	-	expression tag
His 63	-	expression tag
Glu 64	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	15411.7
All*	Total formula weight	15411.7

*Water molecules are not included.