Structure of PDB 3t0d Chain B Binding Site BS03

Receptor Information
>3t0d Chain B (length=1015) Species: 83333 (Escherichia coli K-12) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
VVLQRRDWENPGVTQLNRLAAHPPFASWRNSEEARTDRPSQQLRSLNGEW
RFAWFPAPEAVPESWLECDLPEADTVVVPSNWQMHGYDAPIYTNVTYPIT
VNPPFVPTENPTGCYSLTFNVDESWLQEGQTRIIFDGVNSAFHLWCNGRW
VGYGQDSRLPSEFDLSAFLRAGENRLAVMVLRWSDGSYLEDQDMWRMSGI
FRDVSLLHKPTTQISDFHVATRFNDDFSRAVLEAEVQMCGELRDYLRVTV
SLWQGETQVASGTAPFGGEIIDERGGYADRVTLRLNVENPKLWSAEIPNL
YRAVVELHTADGTLIEAEACDVGFREVRIENGLLLLNGKPLLIRGVNRHE
HHPLHGQVMDEQTMVQDILLMKQNNFNAVRCSHYPNHPLWYTLCDRYGLY
VVDEANIETHGMVPMNRLTDDPRWLPAMSERVTRMVQRDRNHPSVIIWSL
GNESGHGANHDALYRWIKSVDPSRPVQYEGGGADTTATDIICPMYARVDE
DQPFPAVPKWSIKKWLSLPGETRPLILCEYAHAMGNSLGGFAKYWQAFRQ
YPRLQGGFVWDWVDQSLIKYDENGNPWSAYGGDFGDTPNDRQFCMNGLVF
ADRTPHPALTEAKHQQQFFQFRLSGQTIEVTSEYLFRHSDNELLHWMVAL
DGKPLASGEVPLDVAPQGKQLIELPELPQPESAGQLWLTVRVVQPNATAW
SEAGHISAWQQWRLAENLSVTLPAASHAIPHLTTSEMDFCIELGNKRWQF
NRQSGFLSQMWIGDKKQLLTPLRDQFTRAPLDNDIGVTEATRIDPNAWVE
RWKAAGHYQAEAALLQCTADTLADAVLITTAHAWQHQGKTLFISRKTYRI
DGSGQMAITVDVEVASDTPHPARIGLNCQLAQVAERVNWLGLGPQENYPD
RLTAACFDRWDLPLSDMYTPYVFPSENGLRCGTRELNYGPHQWRGDFQFN
ISRYSQQQLMETSHRHLLHAEEGTWLNIDGFHMGIGGDDSWSPSVSAEFQ
LSAGRYHYQLVWCQK
Ligand information
Ligand IDMG
InChIInChI=1S/Mg/q+2
InChIKeyJLVVSXFLKOJNIY-UHFFFAOYSA-N
SMILES
SoftwareSMILES
ACDLabs 10.04
OpenEye OEToolkits 1.5.0		[Mg+2]
CACTVS 3.341[Mg++]
FormulaMg
NameMAGNESIUM ION
ChEMBL
DrugBankDB01378
ZINC
PDB chain3t0d Chain B Residue 3002 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB3t0d Ser-796 of Beta-galactosidase (E. coli) plays a Key role in Maintaining an Optimum Balance between the Opened and Closed Conformations of the Catalytically Important Active Site Loop
Resolution1.93 Å
Binding residue
(original residue number in PDB)		D15 N18 V21 Q163 D193
Binding residue
(residue number reindexed from 1)		D7 N10 V13 Q155 D185
Annotation score4
Enzymatic activity
Catalytic site (original residue number in PDB) D201 H357 H391 E416 H418 E461 Y503 E537 N597 F601 N604
Catalytic site (residue number reindexed from 1) D193 H349 H383 E408 H410 E453 Y495 E529 N589 F593 N596
Enzyme Commision number 3.2.1.23: beta-galactosidase.
Gene Ontology
Molecular Function
GO:0000287 magnesium ion binding
GO:0003824 catalytic activity
GO:0004553 hydrolase activity, hydrolyzing O-glycosyl compounds
GO:0004565 beta-galactosidase activity
GO:0016798 hydrolase activity, acting on glycosyl bonds
GO:0030246 carbohydrate binding
GO:0031420 alkali metal ion binding
GO:0042802 identical protein binding
GO:0046872 metal ion binding
Biological Process
GO:0005975 carbohydrate metabolic process
GO:0005990 lactose catabolic process
GO:0009056 catabolic process
Cellular Component
GO:0009341 beta-galactosidase complex

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:3t0d, PDBe:3t0d, PDBj:3t0d
PDBsum3t0d
PubMed22155115
UniProtP00722|BGAL_ECOLI Beta-galactosidase (Gene Name=lacZ)

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