4ZHY

Crystal structure of a bacterial signalling complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	YfiR	polymer	190	20688.8	1	UniProt (Q9I4L4) Pfam (PF13689) In PDB	Pseudomonas aeruginosa PAO1
2	B	YfiB	polymer	168	18341.9	1	UniProt (Q9I4L6) Pfam (PF00691) In PDB	Pseudomonas aeruginosa PAO1
3	A	SULFATE ION	non-polymer		96.1	2	Chemie (SO4)
4	A, B	FORMIC ACID	non-polymer		46.0	4	Chemie (FMT)
5		water	water		18.0	160	Chemie (HOH)

Sequence modifications

A: 1 - 190 (UniProt: Q9I4L4)

PDB	External Database	Details
Ser 71	Cys 71	engineered mutation

B: 1 - 168 (UniProt: Q9I4L6)

PDB	External Database	Details
Pro 56	Glu 56	conflict
Gly 57	Phe 57	conflict
Ser 58	Gly 58	conflict

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	39030.7
Non-Polymers*	Number of molecules	6
	Total formula weight	376.2
All*	Total formula weight	39406.9

*Water molecules are not included.