KEGG   ENZYME: 2.7.9.4Help
Entry
EC 2.7.9.4                  Enzyme                                 

Name
alpha-glucan, water dikinase;
starch-related R1 protein, GWD
Class
Transferases;
Transferring phosphorus-containing groups;
Phosphotransferases with paired acceptors
BRITE hierarchy
Sysname
ATP:alpha-glucan, water phosphotransferase
Reaction(IUBMB)
ATP + alpha-glucan + H2O = AMP + phospho-alpha-glucan + phosphate
Substrate
ATP [CPD:C00002];
alpha-glucan [CPD:C00912];
H2O [CPD:C00001]
Product
AMP [CPD:C00020];
phospho-alpha-glucan;
phosphate [CPD:C00009]
Comment
Requires Mg2+. ATP appears to be the only phosphate donor. No activity could be detected using GTP, UTP, phosphoenolpyruvate or diphosphate [1]. The protein phosphorylates glucans exclusively on O-6 of glucosyl residues [2]. The protein phosphorylates itself with the beta-phosphate of ATP, which is then transferred to the glucan [1].
History
EC 2.7.9.4 created 2002
Orthology
K08244  alpha-glucan, water dikinase
Genes
ATH: AT1G10760(SEX1) AT4G24450(PWD)
ALY: ARALYDRAFT_492401 ARALYDRAFT_888368
CRB: 17878027 17900870
CSAT: 104717833 104722545 104731009 104739700 104755311 104769369 104778666
EUS: EUTSA_v10006565mg EUTSA_v10024230mg
BRP: 103843262 103862103 103868074
BNA: 106362429 106396511 106414946 106415012 106420118 106441996 111208670
BOE: 106310982 106311771 106311882
THJ: 104799855 104823655
CPAP: 110813116
EGR: 104414162
VRA: 106779562
VAR: 108343823
CCAJ: 109816778
CAM: 101506240
ADU: 107481355
AIP: 107631347
LJA: Lj0g3v0159519.1(Lj0g3v0159519.1) Lj0g3v0159529.1(Lj0g3v0159529.1) Lj0g3v0189879.1(Lj0g3v0189879.1) Lj4g3v1083940.1(Lj4g3v1083940.1) Lj4g3v1083940.2(Lj4g3v1083940.2)
PXB: 103949794
ZJU: 107428564
CSV: 101218978
CMO: 103488983
MCHA: 111019772
CMAX: 111466301
CMOS: 111449288
CPEP: 111802688
VVI: 100246568
SLY: 100191125(GWD)
SPEN: 107020241
SOT: 102577510(R1)
CANN: 107847408(sex)
NSY: 104225269
NTO: 104121255
OEU: 111406876
BVG: 104908450
SOE: 110799235
NNU: 104591440(GWD) 104595539(GWD)
OSA: 4341105
DOSA: Os06t0498400-01(Os06g0498400)
OBR: 102723065
ATS: 109745072(LOC109745072) 109749339(LOC109749339)
SBI: 8085351
ZMA: 100381411(AY109804)
DCT: 110100705
CRE: CHLREDRAFT_205870(GWD1)
MIS: MICPUN_57949(GWD1) MICPUN_96442(GWD2)
SMIN: v1.2.019053.t1(symbB.v1.2.019053.t1) v1.2.019053.t2(symbB.v1.2.019053.t2)
 » show all
Taxonomy
Reference
1  [PMID:12011472]
  Authors
Ritte G, Lloyd JR, Eckermann N, Rottmann A, Kossmann J, Steup M.
  Title
The starch-related R1 protein is an alpha -glucan, water dikinase.
  Journal
Proc. Natl. Acad. Sci. U. S. A. 99 (2002) 7166-71.
  Sequence
Reference
2  [PMID:16914145]
  Authors
Ritte G, Heydenreich M, Mahlow S, Haebel S, Kotting O, Steup M.
  Title
Phosphorylation of C6- and C3-positions of glucosyl residues in starch is catalysed by distinct dikinases.
  Journal
FEBS. Lett. 580 (2006) 4872-6.
Other DBs
ExplorEnz - The Enzyme Database: 2.7.9.4
IUBMB Enzyme Nomenclature: 2.7.9.4
ExPASy - ENZYME nomenclature database: 2.7.9.4
BRENDA, the Enzyme Database: 2.7.9.4
CAS: 664327-94-0

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