Inositol-hexakisphosphate kinase (, ''ATP:1D-myo-inositol-hexakisphosphate phosphotransferase'') is an
enzyme
Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products. A ...
with
systematic name A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature.
A semisystematic name or semitrivial ...
''ATP:1D-myo-inositol-hexakisphosphate 5-phosphotransferase''.
This enzyme
catalyses the following
chemical reaction
A chemical reaction is a process that leads to the IUPAC nomenclature for organic transformations, chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the pos ...
: (1) ATP + 1D-myo-inositol hexakisphosphate(Phytic acid)
ADP + 1D-myo-inositol 5-diphosphate 1,2,3,4,6-pentakisphosphate
: (2) ATP + 1D-myo-inositol 1,3,4,5,6-pentakisphosphate
ADP + 1D-myo-inositol diphosphate tetrakisphosphate (isomeric configuration unknown)
Three mammalian
isoform
A protein isoform, or "protein variant", is a member of a set of highly similar proteins that originate from a single gene or gene family and are the result of genetic differences. While many perform the same or similar biological roles, some isof ...
s are known to exist.
See also
*
IHPK1
*
IHPK2
References
External links
*
{{Portal bar, Biology, border=no
EC 2.7.4