1LB2

Structure of the E. coli alpha C-terminal domain of RNA polymerase in complex with CAP and DNA

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (K)	5'-D(*CP*TP*TP*TP*TP*TP*TP*CP*CP*TP*AP*AP*AP*AP*TP*GP*TP*GP*AP*T)-3'	polymer	20	6089.0	1
2	B (J)	5'-D(*CP*TP*AP*GP*AP*TP*CP*AP*CP*AP*TP*TP*TP*TP*AP*GP*GP*AP*AP*AP*AP*AP*AP*G)-3'	polymer	24	7409.8	1
3	C (A)	CATABOLITE GENE ACTIVATOR PROTEIN	polymer	209	23541.2	1	UniProt (P0ACJ8) Pfam (PF00027) Pfam (PF13545)	Escherichia coli	CAP, cAMP receptor protein, cAMP-regulatory protein
4	D, E (B, E)	DNA-directed RNA polymerase alpha chain	polymer	84	9364.8	2	UniProt (P0A7Z4) Pfam (PF03118)	Escherichia coli	Transcriptase alpha chain, RNA polymerase alpha subunit
5	F (A)	ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE	non-polymer		329.2	1	Chemie (CMP)
6	G, H, I, J, K (K, J, A, B, E)	water	water		18.0	32	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	5
	Total formula weight	55769.6
Non-Polymers*	Number of molecules	1
	Total formula weight	329.2
All*	Total formula weight	56098.8

*Water molecules are not included.