Structure of PDB 1asq Chain A

Receptor sequence
>1asqA (length=552) Species: 3665 (Cucurbita pepo var. melopepo) [Search protein sequence]
SQIRHYKWEVEYMFWAPNCNENIVMGINGQFPGPTIRANAGDSVVVELTN
KLHTEGVVIHWHGILQRGTPWADGTASISQCAINPGETFFYNFTVDNPGT
FFYHGHLGMQRSAGLYGSLIVDPPQGKKEPFHYDGEINLLLSDWWHQSIH
KQEVGLSSKPIRWIGEPQTILLNGRGQFDCSIAAKYDSNLEPCKLKGSES
CAPYIFHVSPKKTYRIRIASTTALAALNFAIGNHQLLVVEADGNYVQPFY
TSDIDIYSGESYSVLITTDQNPSENYWVSVGTRARHPNTPPGLTLLNYLP
NSVSKLPTSPPPQTPAWDDFDRSKNFTYRITAAMGSPKPPVKFNRRIFLL
NTQNVINGYVKWAINDVSLALPPTPYLGAMKYNLLHAFDQNPPPEVFPED
YDIDTPPTNEKTRIGNGVYQFKIGEVVDVILQNANMMKENLSETHPWHLH
GHDFWVLGYGDGKFSAEEESSLNLKNPPLRNTVVIFPYGWTAIRFVADNP
GVWAFHCHIEPHLHMGMGVVFAEGVEKVGRIPTKALACGGTAKSLINNPK
NP
3D structure
PDB1asq X-ray structures and mechanistic implications of three functional derivatives of ascorbate oxidase from zucchini. Reduced, peroxide and azide forms.
ChainA
Resolution2.32 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) H60 H62 H104 H106 H445 H448 H450 H506 C507 H508 I509 H512 M517
Catalytic site (residue number reindexed from 1) H60 H62 H104 H106 H445 H448 H450 H506 C507 H508 I509 H512 M517
Enzyme Commision number 1.10.3.3: L-ascorbate oxidase.
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 CU A H445 C507 H512 H445 C507 H512
BS02 CU A H106 H450 H506 H106 H450 H506
BS03 CU A H62 H104 H508 H62 H104 H508
BS04 CU A H60 H448 H60 H448
BS05 AZI A H106 H450 A504 H506 H106 H450 A504 H506
BS06 AZI A H104 H106 H506 H104 H106 H506
Gene Ontology
Molecular Function
GO:0005507 copper ion binding
GO:0008447 L-ascorbate oxidase activity
GO:0016491 oxidoreductase activity
GO:0046872 metal ion binding
Cellular Component
GO:0005576 extracellular region
GO:0009506 plasmodesma

View graph for
Molecular Function

View graph for
Cellular Component
External links
PDB RCSB:1asq, PDBe:1asq, PDBj:1asq
PDBsum1asq
PubMed8478945
UniProtP37064|ASO_CUCPM L-ascorbate oxidase

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