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2.5.1.76: cysteate synthase

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

Reaction

O-phospho-L-serine
+
sulfite
=
L-cysteate
+
phosphate

Synonyms

MA3297

ECTree

     2 Transferases
         2.5 Transferring alkyl or aryl groups, other than methyl groups
             2.5.1 Transferring alkyl or aryl groups, other than methyl groups (only sub-subclass identified to date)
                2.5.1.76 cysteate synthase

Systematic Name

Systematic Name on EC 2.5.1.76 - cysteate synthase

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SYSTEMATIC NAME
IUBMB Comments
sulfite:O-phospho-L-serine sulfotransferase (phosphate-hydrolysing, L-cysteate-forming)
A pyridoxal-phosphate protein. It is highly specific for O-phospho-L-serine and sulfite. The reaction proceeds through a dehydroalanine (2-aminoacrylic acid) intermediate. The enzyme from Methanosarcina acetivorans is evolutionarily related to threonine synthase (EC 4.2.3.1), but the reaction is more similar to that of O-phosphoserine sulfhydrylase (EC 2.5.1.65).