Structure of PDB 3ffx Chain A

Receptor sequence

>3ffxA (length=128) Species: 83333 (Escherichia coli K-12)

ADKELKFLVVDDESTMRRIVRNLLKELGFNNVEEAEDGVDALNKLQAGGY
GFVISDWRMPNMDGLELLKTIRADGAMSALPVLMVTAHAKKENIIAAAQA
GASGYVVKPFTAATLEEKLNKIFEKLGM

3D structure

• PDB: 3ffx Matching Biochemical Reaction Kinetics to the Timescales of Life: Structural Determinants That Influence the Autodephosphorylation Rate of Response Regulator Proteins.
• Chain: A
• Resolution: 2.01 Å

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	MN	A	D13 D57 R59	D12 D56 R58
BS02	BEF	A	D57 W58 R59 T87 A88 K109	D56 W57 R58 T86 A87 K108

Gene Ontology

Molecular Function

• GO:0000156 phosphorelay response regulator activity
• GO:0000287 magnesium ion binding
• GO:0005515 protein binding
• GO:0016407 acetyltransferase activity
• GO:0046872 metal ion binding

Biological Process

• GO:0000160 phosphorelay signal transduction system
• GO:0006935 chemotaxis
• GO:0007165 signal transduction
• GO:0009454 aerotaxis
• GO:0018393 internal peptidyl-lysine acetylation
• GO:0043052 thermotaxis
• GO:0050920 regulation of chemotaxis
• GO:0071977 bacterial-type flagellum-dependent swimming motility
• GO:0097588 archaeal or bacterial-type flagellum-dependent cell motility
• GO:1902021 regulation of bacterial-type flagellum-dependent cell motility

Cellular Component

• GO:0005737 cytoplasm
• GO:0005829 cytosol
• GO:0009288 bacterial-type flagellum
• GO:0009433 bacterial-type flagellum basal body, C ring
• GO:0120107 bacterial-type flagellum rotor complex

External links

• PDB: RCSB:3ffx, PDBe:3ffx, PDBj:3ffx
• PDBsum: 3ffx
• PubMed: 19646451
• UniProt: P0AE67|CHEY_ECOLI Chemotaxis protein CheY (Gene Name=cheY)