2CAX

STRUCTURAL BASIS FOR COOPERATIVE BINDING OF RIBBON-HELIX-HELIX REPRESSOR OMEGA TO MUTATED DIRECT DNA HEPTAD REPEATS

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	ORF OMEGA	polymer	53	6137.2	4	UniProt (Q57468) Pfam (PF07764) In PDB	STREPTOCOCCUS PYOGENES	ORF OMEGA TRANSCRIPTIONAL REPRESSOR
2	G	5'-D(*GP*AP*AP*TP*CP*AP*CP*AP*AP*AP *TP*CP*AP*CP*AP*AP*G)-3'	polymer	17	5197.4	1
3	H	5'-D(*TP*TP*GP*TP*GP*AP*TP*TP*TP*GP *TP*GP*AP*TP*TP*CP*G)-3'	polymer	17	5254.4	1		synthetic construct
4	U	5'-D(*GP*AP*AP*TP*CP*AP*CP*AP*AP*GP *TP*CP*AP*CP*AP*AP*GP*C)-3'	polymer	18	5502.6	1
5	Y	5'-D(*CP*TP*TP*GP*TP*GP*AP*CP*TP*TP *GP*TP*GP*AP*TP*TP*CP*G)-3'	polymer	18	5528.6	1		synthetic construct
6		water	water		18.0	42	Chemie (HOH)

Sequence modifications

A, B, C, D: 20 - 71 (UniProt: Q57468)

PDB	External Database	Details
Met 19	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	46031.9
All*	Total formula weight	46031.9

*Water molecules are not included.