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Structure of PDB 1e55 Chain B

Receptor sequence
>1e55B (length=490) Species: 4577 (Zea mays) [Search protein sequence]
MLSPSEIPQRDWFPSDFTFGAATSAYQIEGAWNEDGKGESNWDHFCHNHP
ERILDGSNSDIGANSYHMYKTDVRLLKEMGMDAYRFSISWPRILPKGTKE
GGINPDGIKYYRNLINLLLENGIEPYVTIFHWDVPQALEEKYGGFLDKSH
KSIVEDYTYFAKVCFDNFGDKVKNWLTFNDPQTFTSFSYGTGVFAPGRCS
PGLDCAYPTGNSLVEPYTAGHNILLAHAEAVDLYNKHYKRDDTRIGLAFD
VMGRVPYGTSFLDKQAEERSWDINLGWFLEPVVRGDYPFSMRSLARERLP
FFKDEQKEKLAGSYNMLGLNYYTSRFSKNIDISPNYSPVLNTDDAYASQE
VNGPDGKPIGPPMGNPWIYMYPEGLKDLLMIMKNKYGNPPIYITENGIGD
VDTKETPLPMEAALNDYKRLDYIQRHIATLKESIDLGSNVQGYFAWSLLD
NFEWFAGFTERYGIVYVDRNNNCTRYMKESAKWLKEFNTA
3D structure
PDB1e55 The mechanism of substrate (aglycone) specificity in beta-glucosidases is revealed by crystal structures of mutant maize beta-glucosidase-DIMBOA, -DIMBOAGlc, and -dhurrin complexes.
ChainB
Resolution2.0 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) R96 H142 D191 T194 N331 Y333 E406
Catalytic site (residue number reindexed from 1) R85 H131 D180 T183 N320 Y322 E395
Enzyme Commision number 3.2.1.182: 4-hydroxy-7-methoxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl glucoside beta-D-glucosidase.
3.2.1.21: beta-glucosidase.
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 BGC B Y333 W378 E406 W457 E464 Y473 Y322 W367 E395 W446 E453 Y462
BS02 DHR B W143 T194 F198 W378 F466 W132 T183 F187 W367 F455 MOAD: Ki=76uM
Gene Ontology
Molecular Function
GO:0004553 hydrolase activity, hydrolyzing O-glycosyl compounds
GO:0008422 beta-glucosidase activity
GO:0015923 mannosidase activity
GO:0015925 galactosidase activity
GO:0015928 fucosidase activity
GO:0016162 cellulose 1,4-beta-cellobiosidase activity
GO:0016798 hydrolase activity, acting on glycosyl bonds
GO:0097599 xylanase activity
GO:0102726 DIMBOA glucoside beta-D-glucosidase activity
Biological Process
GO:0005975 carbohydrate metabolic process
GO:0009736 cytokinin-activated signaling pathway
Cellular Component
GO:0009507 chloroplast

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Cellular Component
External links
PDB RCSB:1e55, PDBe:1e55, PDBj:1e55
PDBsum1e55
PubMed11106394
UniProtP49235|HGGL1_MAIZE 4-hydroxy-7-methoxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl glucoside beta-D-glucosidase 1, chloroplastic (Gene Name=GLU1)

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