3KYI

Crystal structure of the phosphorylated P1 domain of CheA3 in complex with CheY6 from R. sphaeroides

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Putative histidine protein kinase	polymer	144	15618.4	1	UniProt (Q8KLS0) Pfam (PF01627)	Rhodobacter sphaeroides (Rhodopseudomonas sphaeroides)	cheA3
2	B (B)	CheY6 protein	polymer	145	15703.3	1	UniProt (Q8KLS1) Pfam (PF00072)	Rhodobacter sphaeroides (Rhodopseudomonas sphaeroides)

Sequence modifications

A: 2 - 135 (UniProt: Q8KLS0)

PDB	External Database	Details
Met 0	-	expression tag
Gly 1	-	expression tag
Arg 136	-	expression tag
Ser 137	-	expression tag
His 138	-	expression tag
His 139	-	expression tag
His 140	-	expression tag
His 141	-	expression tag
His 142	-	expression tag
His 143	-	expression tag

B: 2 - 134 (UniProt: Q8KLS1)

PDB	External Database	Details
Met -10	-	expression tag
Arg -9	-	expression tag
Gly -8	-	expression tag
Ser -7	-	expression tag
His -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
Gly 0	-	expression tag
Ser 1	-	expression tag
Asn 56	Asp 56	engineered mutation
Ala 83	Ser 83	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	31321.6
All*	Total formula weight	31321.6

*Water molecules are not included.