KEGG   ENZYME: 2.7.9.5Help
Entry
EC 2.7.9.5                  Enzyme                                 

Name
phosphoglucan, water dikinase;
PWD;
OK1
Class
Transferases;
Transferring phosphorus-containing groups;
Phosphotransferases with paired acceptors
BRITE hierarchy
Sysname
ATP:phospho-alpha-glucan, water phosphotransferase
Reaction(IUBMB)
ATP + [phospho-alpha-glucan] + H2O = AMP + O-phospho-[phospho-alpha-glucan] + phosphate
Substrate
ATP [CPD:C00002];
[phospho-alpha-glucan];
H2O [CPD:C00001]
Product
AMP [CPD:C00020];
O-phospho-[phospho-alpha-glucan];
phosphate [CPD:C00009]
Comment
The enzyme phosphorylates granular starch that has previously been phosphorylated by EC 2.7.9.4, alpha-glucan, water dikinase; there is no activity with unphosphorylated glucans. It transfers the beta-phosphate of ATP to the phosphoglucan, whereas the gamma-phosphate is transferred to water [1]. In contrast to EC 2.7.9.4, which phosphorylates glucose groups in glucans on O-6, this enzyme phosphorylates glucose groups in phosphorylated starch on O-3 [2]. The protein phosphorylates itself with the beta-phosphate of ATP, which is then transferred to the glucan [1].
History
EC 2.7.9.5 created 2005
Orthology
K15535  phosphoglucan, water dikinase
Genes
ATH: AT5G26570(PWD)
ALY: ARALYDRAFT_489476
CRB: 17883411
CSAT: 104709431 104736667 104771126
EUS: EUTSA_v10003634mg
BRP: 103837124 103854710
BNA: 106365883 106382536 106382666 106440356
BOE: 106315486 106327368
THJ: 104818773 104822294
CPAP: 110821648 110821860
CIT: 102621268
TCC: 18602578
EGR: 104456329
GMX: 100783273
VRA: 106771943
CCAJ: 109791383
CAM: 101503946
LJA: Lj5g3v2302970.1(Lj5g3v2302970.1) Lj5g3v2302970.2(Lj5g3v2302970.2)
LANG: 109336116
FVE: 101296480
PPER: 18793876
PMUM: 103322572
PAVI: 110749420
MDM: 103456005
PXB: 103960380
ZJU: 107422200
CSV: 101214042
CMO: 103494556
MCHA: 111014673
RCU: 8280938
JCU: 105639087
HBR: 110639395
JRE: 108987321
VVI: 100256560
SLY: 101263849
SPEN: 107030518
SOT: 102577700(GWD3)
CANN: 107864467
NSY: 104227331
NTO: 104094888
INI: 109175192
SIND: 105159513
OEU: 111373025
HAN: 110876907
LSV: 111896945
DCR: 108199338
BVG: 104889708
SOE: 110793786
NNU: 104587978
OSA: 4352028
DOSA: Os12t0297500-01(Os12g0297500)
OBR: 102700945
BDI: 100837951
ATS: 109781965(LOC109781965)
SBI: 8080376
ZMA: 100274067(magi29945)
SITA: 101776383
MUS: 103997169
DCT: 110093579
AOF: 109823596
ATR: 18434984
CRE: CHLREDRAFT_192398(PWD1)
MNG: MNEG_0234
MIS: MICPUN_104820(PWD1) MICPUN_104865(PWD3) MICPUN_84680(PWD2)
APRO: F751_2834
SMIN: v1.2.022336.t1(symbB.v1.2.022336.t1)
 » show all
Taxonomy
Reference
1  [PMID:15618411]
  Authors
Kotting O, Pusch K, Tiessen A, Geigenberger P, Steup M, Ritte G.
  Title
Identification of a novel enzyme required for starch metabolism in Arabidopsis leaves. The phosphoglucan, water dikinase.
  Journal
Plant. Physiol. 137 (2005) 242-52.
  Sequence
[ath:AT5G26570]
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: 2.7.9.5
IUBMB Enzyme Nomenclature: 2.7.9.5
ExPASy - ENZYME nomenclature database: 2.7.9.5
BRENDA, the Enzyme Database: 2.7.9.5
CAS: 912567-76-1
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