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3.2.1.50: alpha-N-acetylglucosaminidase

This is an abbreviated version!
For detailed information about alpha-N-acetylglucosaminidase, go to the full flat file.

Word Map on EC 3.2.1.50

Reaction

(GlcNAcalpha(1-4))n
+
H2O
=
(GlcNAcalpha(1-4))n-1
+
2-(acetylamino)-2-deoxy-beta-D-glucopyranose

Synonyms

2-acetamido-2-deoxy-alpha-D-glucoside acetamidodeoxyglucohydrolase, AgnB, AgnC, alpha-acetylglucosaminidase, alpha-N-acetylglucosaminidase, BMN 250, exo-glycosidase, glycosidase, heparan N-sulfatase, N-acetyl-alpha-D-glucosaminidase, N-acetyl-alpha-glucosaminidase, NAG, NAGase, NAGLU, Sanfilippo b corrective factor

ECTree

     3 Hydrolases
         3.2 Glycosylases
             3.2.1 Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
                3.2.1.50 alpha-N-acetylglucosaminidase

Engineering

Engineering on EC 3.2.1.50 - alpha-N-acetylglucosaminidase

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PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
E601A
mutation in the active site, lack of enzymatic activity
mutagenesis of Glu-483
mutation in the active site, less enzymatic activity
G304V
-
decrease in enzymatic activity
M1K
-
decrease in enzymatic activity
R234C
-
decrease in enzymatic activity
R533X
-
no enzymatic activity
R565P
-
naturally occurring mutation, five patients with the homozygous mutation in the alpha-N-acetylglucosaminidase gene from the Okinawa islands in Japan show the Sanfilippo type B syndrome, heterozygotes show no phenotype
R565W
-
decrease in enzymatic activity
R643C
-
decrease in enzymatic activity
S522P
-
decrease in enzymatic activity
W147X
-
no enzymatic activity
W168X
-
decrease in enzymatic activity
additional information