Structure of PDB 3muz Chain 1

Receptor sequence
>3muz1 (length=1011) Species: 83333 (Escherichia coli K-12) [Search protein sequence]
RRDWENPGVTQLNRLAAHPPFASWRNSEEARTDRPSQQLRSLNGEWRFAW
FPAPEAVPESWLECDLPEADTVVVPSNWQMHGYDAPIYTNVTYPITVNPP
FVPTENPTGCYSLTFNVDESWLQEGQTRIIFDGVNSAFHLWCNGRWVGYG
QDSRLPSEFDLSAFLRAGENRLAVMVLRWSDGSYLEDQDMWRMSGIFRDV
SLLHKPTTQISDFHVATRFNDDFSRAVLEAEVQMCGELRDYLRVTVSLWQ
GETQVASGTAPFGGEIIDERGGYADRVTLRLNVENPKLWSAEIPNLYRAV
VELHTADGTLIEAEACDVGFREVRIENGLLLLNGKPLLIRGVNRHEHHPL
HGQVMDEQTMVQDILLMKQNNFNAVRCSHYPNHPLWYTLCDRYGLYVVDE
ANIETHGMVPMNRLTDDPRWLPAMSERVTRMVQRDRNHPSVIIWSLGNES
GHGANHDALYRWIKSVDPSRPVQYEGGGADTTATDIICPMYARVDEDQPF
PAVPKWSIKKWLSLPGETRPLILCEYAHAMGNSLGGFAKYWQAFRQYPRL
QGGFVWDWVDQSLIKYDENGNPWSAYGGDFGDTPNDAQFCMNGLVFADRT
PHPALTEAKHQQQFFQFRLSGQTIEVTSEYLFRHSDNELLHWMVALDGKP
LASGEVPLDVAPQGKQLIELPELPQPESAGQLWLTVRVVQPNATAWSEAG
HISAWQQWRLAENLSVTLPAASHAIPHLTTSEMDFCIELGNKRWQFNRQS
GFLSQMWIGDKKQLLTPLRDQFTRAPLDNDIGVSEATRIDPNAWVERWKA
AGHYQAEAALLQCTADTLADAVLITTAHAWQHQGKTLFISRKTYRIDGSG
QMAITVDVEVASDTPHPARIGLNCQLAQVAERVNWLGLGPQENYPDRLTA
ACFDRWDLPLSDMYTPYVFPSENGLRCGTRELNYGPHQWRGDFQFNISRY
SQQQLMETSHRHLLHAEEGTWLNIDGFHMGIGGDDSWSPSVSAEFQLSAG
RYHYQLVWCQK
3D structure
PDB3muz Importance of Arg-599 of b-galactosidase (Escherichia coli) as an anchor for the open conformations of Phe-601 and the active-site loop
Chain1
Resolution1.9 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) D201 E461 Y503 E537
Catalytic site (residue number reindexed from 1) D189 E449 Y491 E525
Enzyme Commision number 3.2.1.23: beta-galactosidase.
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 IPT 1 N102 D201 E461 Y503 E537 H540 N604 W999 N90 D189 E449 Y491 E525 H528 N592 W987 PDBbind-CN: -logKd/Ki=3.46,Ki=0.35mM
BindingDB: Ki=7.6e+4nM
BS02 IPT 1 E304 P306 R645 D648 Q702 W708 E292 P294 R633 D636 Q690 W696 PDBbind-CN: -logKd/Ki=3.46,Ki=0.35mM
BindingDB: Ki=7.6e+4nM
BS03 MG 1 E416 H418 E461 E404 H406 E449
BS04 MG 1 D15 N18 V21 Q163 D193 D3 N6 V9 Q151 D181
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:3muz, PDBe:3muz, PDBj:3muz
PDBsum3muz
PubMed
UniProtP00722|BGAL_ECOLI Beta-galactosidase (Gene Name=lacZ)

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