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4.3.2.2: adenylosuccinate lyase

This is an abbreviated version!
For detailed information about adenylosuccinate lyase, go to the full flat file.

Word Map on EC 4.3.2.2

Reaction

(S)-2-[5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxamido]succinate
=
fumarate
+
5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxamide

Synonyms

adenylosuccinase, adenylosuccinate lyase, ADL, ADSL, AMPS lyase, ASASE, ASL, Glutamyl-tRNA synthetase regulatory factor, lyase, adenylosuccinate, PurB, succino AMP-lyase, succino-AMP lyase

ECTree

     4 Lyases
         4.3 Carbon-nitrogen lyases
             4.3.2 Amidine-lyases
                4.3.2.2 adenylosuccinate lyase

General Stability

General Stability on EC 4.3.2.2 - adenylosuccinate lyase

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GENERAL STABILITY
ORGANISM
UNIPROT
LITERATURE
dialysis for 24 h at 5°C, activity in mutant lysates is decreased by 95% while 50-60% of the initial activity remains in the normal cell lysates
-
freezing at -80°C, followed by thawing, 20-40% loss of enzyme activity in extract
-
stable to thawing and refreezing at a protein concentration of above 2 mg/ml
-
the structure of adenylosuccinate lyase reveals that this protein contains three disulfide bonds that contribute significantly to its stability against thermal and chemical denaturation
three cycles of freezing and thawing remove nearly all enzyme activity
-
unstable to quick freezing in dry ice/acetone
-