KEGG   ENZYME: 2.4.1.242
Entry
EC 2.4.1.242                Enzyme                                 
Name
NDP-glucose---starch glucosyltransferase;
granule-bound starch synthase;
starch synthase II (ambiguous);
waxy protein;
starch granule-bound nucleoside diphosphate glucose-starch glucosyltransferase;
granule-bound starch synthase I;
GBSSI;
granule-bound starch synthase II;
GBSSII;
GBSS;
NDPglucose-starch glucosyltransferase
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
Sysname
NDP-glucose:(1->4)-alpha-D-glucan 4-alpha-D-glucosyltransferase
Reaction(IUBMB)
NDP-glucose + [(1->4)-alpha-D-glucosyl]n = NDP + [(1->4)-alpha-D-glucosyl]n+1 [RN:R07261]
Reaction(KEGG)
R07261 > R00292 R02421 R06049(G) R06051(G)
Substrate
NDP-glucose [CPD:C15541];
[(1->4)-alpha-D-glucosyl]n
Product
NDP [CPD:C00454];
[(1->4)-alpha-D-glucosyl]n+1
Comment
Unlike EC 2.4.1.11, glycogen(starch) synthase and EC 2.4.1.21, starch synthase, which use UDP-glucose and ADP-glucose, respectively, this enzyme can use either UDP- or ADP-glucose. Mutants that lack the Wx (waxy) allele cannot produce this enzyme, which plays an important role in the normal synthesis of amylose. In such mutants, only amylopectin is produced in the endosperm [3] or pollen [5].
History
EC 2.4.1.242 created 2005
Pathway
ec00500  Starch and sucrose metabolism
ec01100  Metabolic pathways
ec01110  Biosynthesis of secondary metabolites
Orthology
K13679  granule-bound starch synthase
K20812  glycogen synthase
Genes
ATHAT1G32900(GBSS1)
ALY9327077
CRB17898386
CSAT104741860 104757652 104779038
EUSEUTSA_v10007089mg
BRP103874772
BNA111211457 111212542
BOE106295327
RSZ108863044
THJ104806459
CPAP110816544
CIT102577951 102625907
CICCICLE_v10019346mg CICLE_v10019349mg
PVY116108870 116108875 116111107 116117207
MINC123211943 123217011 123223183
TCC18605949
GRA105765362 105791291 105800190
GHI107890807 107911823 107929513 107930241 107947218 107948245
GAB108456715 108476229 108479236
DZI111287497 111305992 111308105
EGR104437306 104444119
GMX100037476 100170703(GBSSIa) 100787590 100817424
GSJ114369174 114390674 114401655 114418264
PVUPHAVU_001G0825000 PHAVU_010G119300g
VRA106771165 106780356
VAR108322804 108347686
VUN114167381 114192393
CCAJ109808324 109816601
APRC113851387 113873743
MTR25484575 25500617
CAM101494573 101497940 101515416
PSAT127076145 127098678
LJALj3g3v2515230.1(Lj3g3v2515230.1) Lj5g3v1262950.2(Lj5g3v1262950.2)
ADU107465914 107473063
AIP107617870 107624325
AHF112726593 112734421 112775088
LANG109331786 109335188 109338471 109355844
FVE101296800 101298961
RCN112179206 112182154
PPER18776048 18785206
PMUM103344039
PAVI110758897 110764046
PDUL117619963 117628492
MDM103437450 103439436 103454831
PXB103935950 103950708 103956358
ZJU107403798 107423777
MNT21398473
CSV101208974
CMO103482870
BHJ120092762
MCHA111026058
CMAX111469034 111491113
CMOS111435753 111459310
CPEP111783918 111795973
RCU8269527 8288864
JCU105639084 105645600
HBR110642781 110670417
MESC110609003 110627580
POP7455034 7491408
PEU105135026 105136810
PALZ118040856 118042478
JRE108992643 108993773
QSU112005619 112008531
QLO115957706 115975165
TWL119980982 120016802
VVI100243677 100264969
VRI117904518 117932107
SLY101259777(GBSS1)
SPEN107027917
SOT102577459(GBSS)
SSTN125841269
CANN107863475
NTA107759522(GBSS1) 107829009(GBSSI)
NSY104222724
NTO104114157
NAU109237066
INI109157098(waxy)
ITR116027359
SIND105164411
OEU111377230 111387558
EGT105965111
SSPL121796123 121799868
APAN127240659 127255631
HAN110937495
ECAD122590970
LSV111911063
CCAV112503778
DCR108209256
CSIN114267281 114283590 114296699 114305822 114306952
BVG104883332 104892645
SOE110796039 110796565
CQI110722789 110727853 110732328 110738898
NNU104593836(Waxy) 104604810
MING122061627 122080748
TSS122638945 122664144
PSOM113294774 113301600
OSA4340018 4343010
DOSAOs06t0133000-01(Os06g0133000) Os07t0412100-01(Os07g0412100)
OBR102717622 102719729
BDI100832486 100842237
ATS109732118 109774163
TDC119287940 119331011 119364924
TAES100037526 123053932 123189823 542837 543395 543484
TUA125524718 125539071
LPER127311452 127331600
SBI8057926 8068390
ZMA100125638 103630223 541854
SITA101761090(WAXY) 101786779
SVS117844562 117853299
PVIR120658133 120669339 120671175 120702498
PHAI112880725 112889565
PDA103695691
EGU105042450 105059288
MUS103978866(GBSSI-2) 103996709 103998560(GBSSI-4)
ZOF121971306 121972716 121976366 121982917 121987492 122035878 122037116
DCT110099111
AOF109848515
NCOL116261450 116261982
ATR18428468
SMOSELMODRAFT_149847(GBSS)
PPP112273956 112295463
CRECHLRE_17g721500v5
VCNVOLCADRAFT_72820
MNGMNEG_7624
CSLCOCSUDRAFT_54144
CVRCHLNCDRAFT_58262
OLUOSTLU_49880
OTAOT_ostta06g02940
BPGBathy05g03190
MISMICPUN_104736(GBSSI)
MPPMICPUCDRAFT_49698(GBSSI)
PFUPF2044
PFIPFC_08345
PHOPH0069(PH0069)
PABPAB2292
PYNPNA2_0609
PYAPYCH_17340
PYSPy04_0144
PYCTQ32_06655
TKOTK1768
TONTON_1798
TGATGAM_0597(glgA)
TSITSIB_1780
TBATERMP_01651
THEGQS_06195
THATAM4_616
THMCL1_0882
TLTOCC_09339
THSTES1_1656
TNUBD01_1443
TEUTEU_03535
TGYX802_07260
THVADU37_CDS19000
TCHCHITON_0170
TPEPA0127_06365
TGGA3K92_06325
TCEA3L02_08145
TBSA3L01_10095
THHCDI07_09930
TSLA3L11_03385
TTDA3L14_00965
TPRFA3L09_09035
TRLA3L10_09470
TPAFA3L08_02835
THYA3L12_02660
TCQTIRI35C_0127
THEMFPV09_07845
THEIK1720_01760
PPACPAP_04985
 » show all
Reference
1  [PMID:4824506]
  Authors
Tsai CY.
  Title
The function of the waxy locus in starch synthesis in maize endosperm.
  Journal
Biochem Genet 11:83-96 (1974)
DOI:10.1007/bf00485766
Reference
2  [PMID:9765530]
  Authors
Nakamura T, Vrinten P, Hayakawa K, Ikeda J.
  Title
Characterization of a granule-bound starch synthase isoform found in the pericarp of wheat.
  Journal
Plant Physiol 118:451-9 (1998)
DOI:10.1104/pp.118.2.451
Reference
3  [PMID:9951718]
  Authors
Fujita N, Taira T.
  Title
A 56-kDa protein is a novel granule-bound starch synthase existing in the pericarps, aleurone layers, and embryos of immature seed in diploid wheat (Triticum monococcum L.).
  Journal
Planta 207:125-32 (1998)
DOI:10.1007/s004250050464
Reference
4  [PMID:10393240]
  Authors
Murai J, Taira T, Ohta D.
  Title
Isolation and characterization of the three Waxy genes encoding the granule-bound starch synthase in hexaploid wheat.
  Journal
Gene 234:71-9 (1999)
DOI:10.1016/S0378-1119(99)00178-X
Reference
5  [PMID:17248421]
  Authors
Nelson OE.
  Title
The WAXY Locus in Maize. II. the Location of the Controlling Element Alleles.
  Journal
Genetics 60:507-524 (1968)
Other DBs
ExplorEnz - The Enzyme Database: 2.4.1.242
IUBMB Enzyme Nomenclature: 2.4.1.242
ExPASy - ENZYME nomenclature database: 2.4.1.242
BRENDA, the Enzyme Database: 2.4.1.242
CAS: 9031-53-2

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