8CWT

Complex structure of WhiB3 and the SigmaAr4-RNAP Beta flap tip chimera in space group P43212

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C, E	Redox- and pH-responsive transcriptional regulator WhiB3	polymer	90	10268.6	3	UniProt (P9WF41) Pfam (PF02467) In PDB	Mycobacterium tuberculosis H37Rv
2	B, D, F	RNA polymerase sigma factor SigA,DNA-directed RNA polymerase subunit beta	polymer	112	12650.2	3	UniProt (P9WGI1) UniProt (P9WGY9) Pfam (PF04545) In PDB	Mycobacterium tuberculosis H37Rv	Sigma-A,RNAP subunit beta,RNA polymerase subunit beta,Transcriptase subunit beta
3	A, E, C	IRON/SULFUR CLUSTER	non-polymer		351.6	3	Chemie (SF4)
4	D, A, E, B, F...	SULFATE ION	non-polymer		96.1	25	Chemie (SO4)
5	B, F, D	NICKEL (II) ION	non-polymer		58.7	7	Chemie (NI)
6	D, F, B	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		122.1	3	Chemie (TRS)
7		water	water		18.0	522	Chemie (HOH)

Sequence modifications

B, D, F: 446 - 528 (UniProt: P9WGI1)

PDB	External Database	Details
Met 438	-	initiating methionine
Ala 439	-	expression tag
His 440	-	expression tag
His 441	-	expression tag
His 442	-	expression tag
His 443	-	expression tag
His 444	-	expression tag
His 445	-	expression tag
Gly 529	-	linker
Ser 530	-	linker
Ser 531	-	linker
Gly 532	-	linker
Ser 533	-	linker
Gly 534	-	linker

B, D, F: 535 - 549 (UniProt: P9WGY9)

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	68756.6
Non-Polymers*	Number of molecules	38
	Total formula weight	4233.8
All*	Total formula weight	72990.4

*Water molecules are not included.