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{{enzyme
| Name = (R)-3-amino-2-methylpropionate-pyruvate transaminase
| EC_number = 2.6.1.40
| CAS_number = 37279-00-8
| IUBMB_EC_number = 2/6/1/40
| GO_code = 0047305
| image = 
| width = 
| caption = 
}}

In [[enzymology]], a '''(R)-3-amino-2-methylpropionate—pyruvate transaminase''' ({{EC number|2.6.1.40}}) is an [[enzyme]] that [[catalysis|catalyzes]] the [[chemical reaction]]

:(R)-3-amino-2-methylpropanoate + pyruvate <math>\rightleftharpoons</math> 2-methyl-3-oxopropanoate + L-alanine

Thus, the two [[substrate (biochemistry)|substrates]] of this enzyme are [[(R)-3-amino-2-methylpropanoate]] and [[pyruvate]], whereas its two [[product (chemistry)|products]] are [[2-methyl-3-oxopropanoate]] and [[L-alanine]].

This enzyme belongs to the family of [[transferase]]s, specifically the [[transaminases]], which transfer nitrogenous groups.  The systematic name of this enzyme class is '''(R)-3-amino-2-methylpropanoate:pyruvate aminotransferase'''. Other names in common use include '''D-3-aminoisobutyrate-pyruvate transaminase''', '''beta-aminoisobutyrate-pyruvate aminotransferase''', '''D-3-aminoisobutyrate-pyruvate aminotransferase''', '''D-3-aminoisobutyrate-pyruvate transaminase''', '''(R)-3-amino-2-methylpropionate transaminase''', and '''D-beta-aminoisobutyrate:pyruvate aminotransferase'''.

==References==
{{reflist|1}}
* {{cite journal | author = Kakimoto Y, Taniguchi K, Sano I | year = 1969 | title = D-beta-aminoisobutyrate:pyruvate aminotransferase in mammalian liver and excretion of beta-aminoisobutyrate by man | journal = J. Biol. Chem.  | volume = 244 | pages = 335&ndash;40  | pmid = 5773299 | issue = 2 }}
* {{cite journal | author = Tamaki N, Sakata SF, Matsuda K | year = 2000 | title = Purification, properties, and sequencing of aminoisobutyrate aminotransferases from rat liver | journal = Methods Enzymol.  | volume = 324 | pages = 376&ndash;89  | pmid = 10989446 | doi = 10.1016/S0076-6879(00)24247-X }}

{{DEFAULTSORT:(R)-3-amino-2-methylpropionate-pyruvate transaminase}}
[[Category:EC 2.6.1]]
[[Category:Enzymes of unknown structure]]


{{transferase-stub}}