Structure of PDB 4w93 Chain A

Receptor sequence
>4w93A (length=496) Species: 9606 (Homo sapiens) [Search protein sequence]
PYSPNTQQGRTSIVHLFEWRWVDIALECERYLAPKGFGGVQVSPPNENVA
IYNPFRPWWERYQPVSYKLCTRSGNEDEFRNMVTRCNNVGVRIYVDAVIN
HMCGNAVSAGTSSTCGSYFNPGSRDFPAVPYSGWDFNDGKCKTGSGDIEN
YNDATQVRDCRLTGLLDLALEKDYVRSKIAEYMNHLIDIGVAGFRLDASK
HMWPGDIKAILDKLHNLNSNWFPAGSKPFIYQEVIDLGGEPIKSSDYFGN
GRVTEFKYGAKLGTVIRKWNGEKMSYLKNWGEGWGFVPSDRALVFVDNHD
NQRGHGAGGASILTFWDARLYKMAVGFMLAHPYGFTRVMSSYRWPRQFQN
GNDVNDWVGPPNNNGVIKEVTINPDTTCGNDWVCEHRWRQIRNMVIFRNV
VDGQPFTNWYDNGSNQVAFGRGNRGFIVFNNDDWSFSLTLQTGLPAGTYC
DVISGDKINGNCTGIKIYVSDDGKAHFSISNSAEDPFIAIHAESKL
3D structure
PDB4w93 The amylase inhibitor montbretin A reveals a new glycosidase inhibition motif.
ChainA
Resolution1.352 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) D197 S226 D300
Catalytic site (residue number reindexed from 1) D197 S226 D300
Enzyme Commision number 3.2.1.1: alpha-amylase.
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 CA A N100 R158 D167 H201 N100 R158 D167 H201
BS02 3L9 A W58 W59 Y62 H101 Y151 L162 T163 L165 R195 D197 K200 H201 E233 I235 E240 D300 W58 W59 Y62 H101 Y151 L162 T163 L165 R195 D197 K200 H201 E233 I235 E240 D300 MOAD: Ki=8nM
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004556 alpha-amylase activity
GO:0005509 calcium ion binding
GO:0016160 amylase activity
GO:0016798 hydrolase activity, acting on glycosyl bonds
GO:0031404 chloride ion binding
GO:0043169 cation binding
GO:0046872 metal ion binding
Biological Process
GO:0005975 carbohydrate metabolic process
GO:0016052 carbohydrate catabolic process
GO:0044245 polysaccharide digestion
Cellular Component
GO:0005576 extracellular region
GO:0005615 extracellular space
GO:0070062 extracellular exosome

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:4w93, PDBe:4w93, PDBj:4w93
PDBsum4w93
PubMed26214255
UniProtP04746|AMYP_HUMAN Pancreatic alpha-amylase (Gene Name=AMY2A)

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