1KU7

Crystal Structure of Thermus aquatics RNA Polymerase SigmaA Subunit Region 4 Bound to-35 Element DNA

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (B)	5'-D(*CP*CP*TP*TP*GP*AP*CP*AP*AP*AP*G)-3'	polymer	11	3342.2	1
2	B (C)	5'-D(*CP*CP*TP*TP*TP*GP*TP*CP*AP*AP*G)-3'	polymer	11	3324.2	1
3	C, D (A, D)	sigma factor sigA	polymer	73	8737.1	2	UniProt (Q9EZJ8) Pfam (PF04545)	Thermus aquaticus
4	E, F, G, H (B, C, A, D)	water	water		18.0	67	Chemie (HOH)

Sequence modifications

A, D: 366 - 438 (UniProt: Q9EZJ8)

PDB	External Database	Details
Met 386	Leu 386	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	24140.7
All*	Total formula weight	24140.7

*Water molecules are not included.