4N9I

Crystal Structure of Transcription regulation protein CRP complexed with cGMP

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	Catabolite gene activator	polymer	210	23672.4	4	UniProt (C3SQJ7) Pfam (PF00027) Pfam (PF13545) In PDB	Escherichia coli	Cyclic AMP receptor protein
2	A, B, C, D	CYCLIC GUANOSINE MONOPHOSPHATE	non-polymer		345.2	4	Chemie (PCG)
3		water	water		18.0	268	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	94689.8
Non-Polymers*	Number of molecules	4
	Total formula weight	1380.8
All*	Total formula weight	96070.6

*Water molecules are not included.