Structure of PDB 3ga5 Chain A Binding Site BS02

Receptor Information

>3ga5 Chain A (length=305) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]

TRIGVTIYKYDDNFMSVVRKAIEKDGKSAPDVQLLMNDSQNDQSKQNDQI
DVLLAKGVKALAINLVDPAAAGTVIEKARGQNVPVVFFNKEPSRKALDSY
DKAYYVGTDSKESGVIQGDLIAKHWQANQGWDLNKDGKIQYVLLKGEPGH
PDAEARTTYVVKELNDKGIQTEQLALDTAMWDTAQAKDKMDAWLSGPNAN
KIEVVIANNDAMAMGAVEALKAHNKSSIPVFGVDALPEALALVKSGAMAG
TVLNDANNQAKATFDLAKNLAEGKGAADGTSWKIENKIVRVPYVGVDKDN
LSEFT

Ligand information

Ligand ID

InChI

InChI=1S/Ca/q+2

InChIKey

BHPQYMZQTOCNFJ-UHFFFAOYSA-N

SMILES

Software	SMILES
CACTVS 3.341	[Ca++]
ACDLabs 10.04 OpenEye OEToolkits 1.5.0	[Ca+2]

Formula

Name

CALCIUM ION

PDB chain

3ga5 Chain A Residue 500 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]

Receptor-Ligand Complex Structure

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Structure summary

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PDB	3ga5 X-ray structure of glucose/galactose receptor from Salmonella typhimurium in complex with the physiological ligand, (2R)-glyceryl-beta-D-galactopyranoside
Resolution	1.87 Å
Binding residue (original residue number in PDB)	D134 N136 D138 K140 Q142 E205
Binding residue (residue number reindexed from 1)	D132 N134 D136 K138 Q140 E203
Annotation score	4

Enzymatic activity

Enzyme Commision number

Gene Ontology

	Molecular Function
GO:0030246	carbohydrate binding
GO:0046872	metal ion binding

	Biological Process
GO:0006935	chemotaxis

	Cellular Component
GO:0030288	outer membrane-bounded periplasmic space
GO:0042597	periplasmic space

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Cellular Component

External links

PDB	RCSB:3ga5, PDBe:3ga5, PDBj:3ga5
PDBsum	3ga5
PubMed	19292879
UniProt	P23905\|MGLB_SALTY D-galactose/methyl-galactoside binding periplasmic protein MglB (Gene Name=mglB)

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