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PDBsum entry 3k5t

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protein ligands metals links
Oxidoreductase PDB id
3k5t

 

 

 

 

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Contents
Protein chain
712 a.a. *
Ligands
NAG-NAG ×2
GOL
NAG
Metals
_CU
_CA ×2
Waters ×299
* Residue conservation analysis
PDB id:
3k5t
Name: Oxidoreductase
Title: Crystal structure of human diamine oxidase in space group c2221
Structure: Diamine oxidase. Chain: a. Synonym: amiloride-sensitive amine oxidase [copper-containing], dao, amiloride-binding protein, abp, histaminase, kidney amine oxidase, kao. Engineered: yes. Mutation: yes
Source: Homo sapiens. Human. Organism_taxid: 9606. Gene: abp1, aoc1, dao1. Expressed in: drosophila melanogaster. Expression_system_taxid: 7227. Expression_system_cell_line: drosophila schneider 2 (s2)
Resolution:
2.11Å     R-factor:   0.239     R-free:   0.290
Authors: A.P.Mcgrath,J.M.Guss
Key ref: A.P.McGrath et al. (2010). A new crystal form of human diamine oxidase. Acta Crystallogr Sect F Struct Biol Cryst Commun, 66, 137-142. PubMed id: 20124708
Date:
08-Oct-09     Release date:   09-Feb-10    
PROCHECK
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 Headers
 References

Protein chain
Pfam   ArchSchema ?
P19801  (AOC1_HUMAN) -  Amiloride-sensitive amine oxidase [copper-containing] from Homo sapiens
Seq:
Struc:
 
Seq:
Struc:
751 a.a.
712 a.a.*
Key:    PfamA domain  Secondary structure  CATH domain
* PDB and UniProt seqs differ at 3 residue positions (black crosses)

 Enzyme reactions 
   Enzyme class: E.C.1.4.3.22  - diamine oxidase.
[IntEnz]   [ExPASy]   [KEGG]   [BRENDA]
      Reaction: histamine + O2 + H2O = imidazole-4-acetaldehyde + H2O2 + NH4+
histamine
+ O2
+ H2O
= imidazole-4-acetaldehyde
+
H2O2
Bound ligand (Het Group name = NAG)
matches with 46.67% similarity
+ NH4(+)
Molecule diagrams generated from .mol files obtained from the KEGG ftp site

 

 
    reference    
 
 
Acta Crystallogr Sect F Struct Biol Cryst Commun 66:137-142 (2010)
PubMed id: 20124708  
 
 
A new crystal form of human diamine oxidase.
A.P.McGrath, K.M.Hilmer, C.A.Collyer, D.M.Dooley, J.M.Guss.
 
  ABSTRACT  
 
Copper amine oxidases (CAOs) are ubiquitous in nature and catalyse the oxidative deamination of primary amines to the corresponding aldehydes. Humans have three viable CAO genes (AOC1-3). AOC1 encodes human diamine oxidase (hDAO), which is the frontline enzyme for histamine metabolism. hDAO is unique among CAOs in that it has a distinct substrate preference for diamines. The structure of hDAO in space group P2(1)2(1)2(1) with two molecules in the asymmetric unit has recently been reported. Here, the structure of hDAO refined to 2.1 A resolution in space group C222(1) with one molecule in the asymmetric unit is reported.
 

 

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