Structure of PDB 1ez9 Chain A

Receptor sequence
>1ez9A (length=370) Species: 83333 (Escherichia coli K-12) [Search protein sequence]
KIEEGKLVIWINGDKGYNGLAEVGKKFEKDTGIKVTVEHPDKLEEKFPQV
AATGDGPDIIFWAHDRFGGYAQSGLLAEITPDKAFQDKLYPFTWDAVRYN
GKLIAYPIAVEALSLIYNKDLLPNPPKTWEEIPALDKELKAKGKSALMFN
LQEPYFTWPLIAADGGYAFKYENGKYDIKDVGVDNAGAKAGLTFLVDLIK
NKHMNADTDYSIAEAAFNKGETAMTINGPWAWSNIDTSKVNYGVTVLPTF
KGQPSKPFVGVLSAGINAASPNKELAKEFLENYLLTDEGLEAVNKDKPLG
AVALKSYEEELAKDPRIAATMENAQKGEIMPNIPQMSAFWYAVRTAVINA
ASGRQTVDEALKDAQTRITK
3D structure
PDB1ez9 Structural evidence for a dominant role of nonpolar interactions in the binding of a transport/chemosensory receptor to its highly polar ligands.
ChainA
Resolution1.9 Å
3D
structure
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Enzymatic activity
Enzyme Commision number ?
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 GLC A E111 Y155 W230 E111 Y155 W230 PDBbind-CN: -logKd/Ki=5.10,Kd=8uM
BS02 GLC A D65 E153 P154 Y155 W340 D65 E153 P154 Y155 W340 PDBbind-CN: -logKd/Ki=5.10,Kd=8uM
BS03 GLC A E153 W340 Y341 R344 E153 W340 Y341 R344 PDBbind-CN: -logKd/Ki=5.10,Kd=8uM
Gene Ontology
Molecular Function
GO:0005515 protein binding
GO:0015144 carbohydrate transmembrane transporter activity
GO:1901982 maltose binding
Biological Process
GO:0006974 DNA damage response
GO:0008643 carbohydrate transport
GO:0015768 maltose transport
GO:0034219 carbohydrate transmembrane transport
GO:0034289 detection of maltose stimulus
GO:0042956 maltodextrin transmembrane transport
GO:0055085 transmembrane transport
GO:0060326 cell chemotaxis
Cellular Component
GO:0016020 membrane
GO:0030288 outer membrane-bounded periplasmic space
GO:0042597 periplasmic space
GO:0043190 ATP-binding cassette (ABC) transporter complex
GO:0055052 ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing
GO:1990060 maltose transport complex

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1ez9, PDBe:1ez9, PDBj:1ez9
PDBsum1ez9
PubMed11790091
UniProtP0AEX9|MALE_ECOLI Maltose/maltodextrin-binding periplasmic protein (Gene Name=malE)

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