Adenylylsulfate—ammonia adenylyltransferase explained

adenylylsulfate-ammonia adenylyltransferase
Ec Number:	2.7.7.51
Cas Number:	79121-94-1
Go Code:	0047352

In enzymology, an adenylylsulfate-ammonia adenylyltransferase is an enzyme that catalyzes the chemical reaction adenylyl sulfate + NH₃

\rightleftharpoons adenosine 5'-phosphoramidate + sulfate.

Thus, the two substrates of this enzyme are adenylyl sulfate and NH₃, whereas its two products are adenosine 5'-phosphoramidate and sulfate.

This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing nucleotide groups (nucleotidyltransferases). The systematic name of this enzyme class is adenylyl-sulfate:ammonia adenylyltransferase. Other names in common use include APSAT, and adenylylsulfate:ammonia adenylyltransferase.

References

• Fankhauser H, Garber L, Schiff JA . 1979 . Adenylyl sulfate (APS):ammonia adenylyl transferase (APSAT) forming adenosine 5' phosphoramidate (APA) from APS and ammonia . Plant Physiol. . 63S . 162 .
• Fankhauser H, Schiff JA . 1980 . Further purification and properties of adenylyl sulfate (APS): ammonia adenylyl transferase (APSAT) from Chlorella . Plant Physiol. . 65S . 17 .