2JBA

PhoB response regulator receiver domain constitutively-active double mutant D53A and Y102C.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	PHOSPHATE REGULON TRANSCRIPTIONAL REGULATORY PROTEIN PHOB	polymer	127	14439.7	1	UniProt (P0AFJ5) Pfam (PF00072) In PDB	ESCHERICHIA COLI	PHOB RESPONSE REGULATOR D53A-Y102C
2	B	PHOSPHATE REGULON TRANSCRIPTIONAL REGULATORY PROTEIN PHOB	polymer	127	14411.7	1	UniProt (P0AFJ5) Pfam (PF00072) In PDB	ESCHERICHIA COLI	PHOB RESPONSE REGULATOR D53A-Y102C
3	A, B	SODIUM ION	non-polymer		23.0	2	Chemie (NA)
4	A	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		122.1	1	Chemie (TRS)
5		water	water		18.0	303	Chemie (HOH)

Sequence modifications

A: 1 - 127 (UniProt: P0AFJ5)

PDB	External Database	Details
Ala 53	Asp 53	engineered mutation
Arg 69	Lys 69	conflict
Cys 102	Tyr 102	engineered mutation

B: 1 - 127 (UniProt: P0AFJ5)

PDB	External Database	Details
Ala 53	Asp 53	engineered mutation
Cys 102	Tyr 102	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	28851.4
Non-Polymers*	Number of molecules	3
	Total formula weight	168.1
All*	Total formula weight	29019.6

*Water molecules are not included.