Structure of PDB 4dux Chain B Binding Site BS01

Receptor Information
>4dux 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
GSESGHGANHDALYRWIKSVDPSRPVQYEGGGADTTATDIICPMYARVDE
DQPFPAVPKWSIKKWLSLPGETRPLILCEYAHAMGNSLGGFAKYWQAFRQ
YPRLQGGFVWDWVDQSLIKYDENGNPWSAYGGDFGDTPNDRQFCMNGLVF
ADRTPHPALTEAKHQQQFFQFRLSGQTIEVTSEYLFRHSDNELLHWMVAL
DGKPLASGEVPLDVAPQGKQLIELPELPQPESAGQLWLTVRVVQPNATAW
SEAGHISAWQQWRLAENLSVTLPAASHAIPHLTTSEMDFCIELGNKRWQF
NRQSGFLSQMWIGDKKQLLTPLRDQFTRAPLDNDIGVSEATRIDPNAWVE
RWKAAGHYQAEAALLQCTADTLADAVLITTAHAWQHQGKTLFISRKTYRI
DGSGQMAITVDVEVASDTPHPARIGLNCQLAQVAERVNWLGLGPQENYPD
RLTAACFDRWDLPLSDMYTPYVFPSENGLRCGTRELNYGPHQWRGDFQFN
ISRYSQQQLMETSHRHLLHAEEGTWLNIDGFHMGIGGDDSWSPSVSAEFQ
LSAGRYHYQLVWCQK
Ligand information
Ligand ID0MK
InChIInChI=1S/C5H10O5/c6-2-1-10-5(9)4(8)3(2)7/h2-9H,1H2/t2-,3-,4-,5-/m0/s1
InChIKeySRBFZHDQGSBBOR-FCAWWPLPSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.7.6C1C(C(C(C(O1)O)O)O)O
OpenEye OEToolkits 1.7.6C1[C@@H]([C@@H]([C@@H]([C@H](O1)O)O)O)O
CACTVS 3.385O[CH]1CO[CH](O)[CH](O)[CH]1O
ACDLabs 12.01C1(O)C(O)C(O)C(CO1)O
CACTVS 3.385O[C@H]1CO[C@H](O)[C@@H](O)[C@H]1O
FormulaC5 H10 O5
Namebeta-L-ribopyranose;
beta-L-ribose;
L-ribose;
ribose;
L-ribopyranose
ChEMBL
DrugBank
ZINCZINC000004521829
PDB chain4dux Chain B Residue 2001 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB4dux Structural explanation for allolactose (lac operon inducer) synthesis by lacZ beta-galactosidase and the evolutionary relationship between allolactose synthesis and the lac repressor.
Resolution2.3 Å
Binding residue
(original residue number in PDB)		D201 H391 E461 M502 Y503 E537 H540 W568 F601
Binding residue
(residue number reindexed from 1)		D193 H383 E453 M494 Y495 E529 H532 W560 F593
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:4dux, PDBe:4dux, PDBj:4dux
PDBsum4dux
PubMed23486479
UniProtP00722|BGAL_ECOLI Beta-galactosidase (Gene Name=lacZ)

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