ENZYME entry: EC 2.4.1.21

Accepted Name
Starch synthase.
Alternative Name(s)
ADP-glucose--starch glucosyltransferase.
Glycogen synthase.
Starch (bacterial glycogen) synthase.
Reaction catalysed
ADP-glucose + (1,4-alpha-D-glucosyl)(n) <=> ADP + (1,4-alpha-D-glucosyl)(n+1)
Comment(s)
  • The description (official name) various according to the source of the enzyme and the nature of its synthetic product, e.g. starch synthase, bacterial glycogen synthase.
  • A similar enzyme utilizes UDP-glucose (cf. EC 2.4.1.11).
Cross-references
BRENDA2.4.1.21
EC2PDB2.4.1.21
ExplorEnz2.4.1.21
PRIAM enzyme-specific profiles2.4.1.21
KEGG Ligand Database for Enzyme Nomenclature2.4.1.21
IUBMB Enzyme Nomenclature2.4.1.21
IntEnz2.4.1.21
MEDLINEFind literature relating to 2.4.1.21
MetaCyc2.4.1.21
UniProtKB/Swiss-Prot
P0A3F2, GLGA1_AGRT5;  Q3M9U1, GLGA1_ANAVT;  Q89RJ4, GLGA1_BRADU;  
Q39XS5, GLGA1_GEOMG;  Q74ED9, GLGA1_GEOSL;  Q608L4, GLGA1_METCA;  
Q3JEW3, GLGA1_NITOC;  Q8YVU5, GLGA1_NOSS1;  P58393, GLGA1_RHIME;  
P0A3F3, GLGA1_RHIRD;  Q2JSZ9, GLGA1_SYNJA;  Q2JNM6, GLGA1_SYNJB;  
P74521, GLGA1_SYNY3;  Q8UK38, GLGA2_AGRT5;  Q3M3R4, GLGA2_ANAVT;  
Q89G86, GLGA2_BRADU;  Q39QT6, GLGA2_GEOMG;  Q747K8, GLGA2_GEOSL;  
Q604D9, GLGA2_METCA;  Q3JD12, GLGA2_NITOC;  Q8Z0Q9, GLGA2_NOSS1;  
P58394, GLGA2_RHIME;  Q2JRJ4, GLGA2_SYNJA;  Q2JKU0, GLGA2_SYNJB;  
P72623, GLGA2_SYNY3;  A9NFK6, GLGA_ACHLI;  A1TRG5, GLGA_ACIAC;  
A5FUS8, GLGA_ACICJ;  A3MZ67, GLGA_ACTP2;  B3H0J4, GLGA_ACTP7;  
A6VP18, GLGA_ACTSZ;  A0KPQ1, GLGA_AERHH;  A4SIE1, GLGA_AERS4;  
B9JAA4, GLGA_AGRRK;  B6EQL7, GLGA_ALISL;  Q0AA27, GLGA_ALKEH;  
A6TSC8, GLGA_ALKMQ;  B8J8R4, GLGA_ANAD2;  Q2IM81, GLGA_ANADE;  
A7H6L1, GLGA_ANADF;  B4ULD8, GLGA_ANASK;  B7GK04, GLGA_ANOFW;  
O66935, GLGA_AQUAE;  Q5NXZ7, GLGA_AROAE;  Q81K85, GLGA_BACAN;  
Q72YJ6, GLGA_BACC1;  B7HBC4, GLGA_BACC4;  A7GU98, GLGA_BACCN;  
B9J2G5, GLGA_BACCQ;  Q816G8, GLGA_BACCR;  Q632H4, GLGA_BACCZ;  
Q9KDX6, GLGA_BACHD;  Q6HC18, GLGA_BACHK;  Q65FS7, GLGA_BACLD;  
P39125, GLGA_BACSU;  Q7WIJ0, GLGA_BORBR;  Q7W6L5, GLGA_BORPA;  
A9IMI9, GLGA_BORPD;  Q2T6R2, GLGA_BURTA;  B9MPC0, GLGA_CALBD;  
A4XHL5, GLGA_CALS8;  B3PGN5, GLGA_CELJU;  Q5L562, GLGA_CHLAB;  
Q3APL6, GLGA_CHLCH;  Q821W4, GLGA_CHLCV;  Q255S3, GLGA_CHLFF;  
B3EGV0, GLGA_CHLL2;  Q9PLC3, GLGA_CHLMU;  B3QR00, GLGA_CHLP8;  
A1BIY8, GLGA_CHLPD;  Q9Z6V8, GLGA_CHLPN;  B0B925, GLGA_CHLT2;  
Q3KKP3, GLGA_CHLTA;  B0BAQ4, GLGA_CHLTB;  Q8KAY6, GLGA_CHLTE;  
O84804, GLGA_CHLTR;  A8AQY0, GLGA_CITK8;  Q97GX6, GLGA_CLOAB;  
A6M334, GLGA_CLOB8;  B2V049, GLGA_CLOBA;  B2TR28, GLGA_CLOBB;  
Q18A79, GLGA_CLOD6;  B9DWP3, GLGA_CLOK1;  A5N2Z2, GLGA_CLOK5;  
A0PY73, GLGA_CLONN;  Q8XPA1, GLGA_CLOPE;  A9KMA3, GLGA_CLOPH;  
A7MGE0, GLGA_CROS8;  Q47IJ4, GLGA_DECAR;  C1CWY8, GLGA_DEIDV;  
Q1IWV2, GLGA_DEIGD;  Q9RWS1, GLGA_DEIRA;  B8FBH4, GLGA_DESAA;  
B1I4F5, GLGA_DESAP;  Q30Z13, GLGA_DESDG;  B8G1G3, GLGA_DESHD;  
A4J4I4, GLGA_DESRM;  Q729V4, GLGA_DESVH;  B8DL94, GLGA_DESVM;  
A1VC53, GLGA_DESVV;  A7ZSW2, GLGA_ECO24;  B7UKD4, GLGA_ECO27;  
B7MDR4, GLGA_ECO45;  B7L4W1, GLGA_ECO55;  P0A6V0, GLGA_ECO57;  
B5YUI5, GLGA_ECO5E;  B7NMJ4, GLGA_ECO7I;  B7N176, GLGA_ECO81;  
B7M2J2, GLGA_ECO8A;  C4ZVX9, GLGA_ECOBW;  B1X774, GLGA_ECODH;  
A8A5N9, GLGA_ECOHS;  A1AGW2, GLGA_ECOK1;  Q0TC30, GLGA_ECOL5;  
P0A6U9, GLGA_ECOL6;  B1IP35, GLGA_ECOLC;  P0A6U8, GLGA_ECOLI;  
B7NE39, GLGA_ECOLU;  B6I2Z5, GLGA_ECOSE;  B1LI90, GLGA_ECOSM;  
Q1R5J7, GLGA_ECOUT;  C5B965, GLGA_EDWI9;  B2KE25, GLGA_ELUMP;  
A4WFL2, GLGA_ENT38;  B2VJU7, GLGA_ERWT9;  B7LSE0, GLGA_ESCF3;  
C4Z0G2, GLGA_EUBE2;  B1YK70, GLGA_EXIS2;  C4L3L1, GLGA_EXISA;  
A7HJT8, GLGA_FERNB;  B0S264, GLGA_FINM2;  A5FG96, GLGA_FLAJ1;  
B0TZI2, GLGA_FRAP2;  Q14J34, GLGA_FRAT1;  A7NAI5, GLGA_FRATF;  
Q2A4U4, GLGA_FRATH;  B2SFN0, GLGA_FRATM;  A0Q596, GLGA_FRATN;  
Q0BN64, GLGA_FRATO;  Q5NHN2, GLGA_FRATT;  A4IZJ9, GLGA_FRATW;  
Q8RF65, GLGA_FUSNN;  B9M2J2, GLGA_GEODF;  O08328, GLGA_GEOSE;  
A4IS20, GLGA_GEOTN;  A5GBI7, GLGA_GEOUR;  Q7NM37, GLGA_GLOVI;  
Q0BPL3, GLGA_GRABC;  Q4QK70, GLGA_HAEI8;  A5UBW8, GLGA_HAEIE;  
A5UEJ5, GLGA_HAEIG;  P45179, GLGA_HAEIN;  B8F3S8, GLGA_HAEPS;  
A1WW18, GLGA_HALHL;  B0TD37, GLGA_HELMI;  Q0I3I0, GLGA_HISS1;  
B4U626, GLGA_HYDS0;  Q28MN0, GLGA_JANSC;  B5XTR0, GLGA_KLEP3;  
A6TF48, GLGA_KLEP7;  Q1ILA0, GLGA_KORVE;  C5CGT4, GLGA_KOSOT;  
Q5FL65, GLGA_LACAC;  Q036T0, GLGA_LACC3;  B3W9A1, GLGA_LACCB;  
Q9CHM9, GLGA_LACLA;  Q890I8, GLGA_LACPL;  Q1WSN1, GLGA_LACS1;  
B0SFJ4, GLGA_LEPBA;  B0SPF1, GLGA_LEPBP;  B1Y0P9, GLGA_LEPCP;  
Q2W5G0, GLGA_MAGSA;  Q65TI3, GLGA_MANSM;  A1U0K2, GLGA_MARAV;  
A6VUP1, GLGA_MARMS;  Q59001, GLGA_METJA;  B8EN59, GLGA_METSB;  
Q2RH55, GLGA_MOOTA;  Q6KHP2, GLGA_MYCMO;  P9WMZ0, GLGA_MYCTO;  
P9WMZ1, GLGA_MYCTU;  Q1DCS0, GLGA_MYXXD;  B2A6E4, GLGA_NATTJ;  
Q0AIE6, GLGA_NITEC;  Q82SP3, GLGA_NITEU;  Q2YB48, GLGA_NITMU;  
B2J471, GLGA_NOSP7;  Q2G7S7, GLGA_NOVAD;  Q8ET54, GLGA_OCEIH;  
B1ZUX5, GLGA_OPITP;  A1BAE6, GLGA_PARDP;  Q6MAS9, GLGA_PARUW;  
Q9CN91, GLGA_PASMU;  Q6CZK3, GLGA_PECAS;  C6DH76, GLGA_PECCP;  
Q3A0B8, GLGA_PELCD;  Q3B6C3, GLGA_PELLD;  B4SC83, GLGA_PELPB;  
A9BG68, GLGA_PETMO;  Q6LKA1, GLGA_PHOPR;  A1VL96, GLGA_POLNA;  
B4S584, GLGA_PROA2;  A3PBY3, GLGA_PROM0;  A2C167, GLGA_PROM1;  
A8G3X5, GLGA_PROM2;  A2CAW5, GLGA_PROM3;  A9BAW0, GLGA_PROM4;  
A2BVS2, GLGA_PROM5;  Q31BS5, GLGA_PROM9;  Q7VBP0, GLGA_PROMA;  
Q7V8F0, GLGA_PROMM;  Q7V275, GLGA_PROMP;  A2BQ90, GLGA_PROMS;  
Q46LU1, GLGA_PROMT;  A4SCU9, GLGA_PROVI;  Q48JG9, GLGA_PSE14;  
A6V616, GLGA_PSEA7;  Q9I1V0, GLGA_PSEAE;  Q4KCP0, GLGA_PSEF5;  
Q3KD65, GLGA_PSEPF;  Q88FN9, GLGA_PSEPK;  Q880M9, GLGA_PSESM;  
Q4ZS46, GLGA_PSEU2;  Q8XT73, GLGA_RALSO;  B3Q001, GLGA_RHIE6;  
Q2K485, GLGA_RHIEC;  Q1MBS7, GLGA_RHIL3;  Q985P2, GLGA_RHILO;  
B5ZQ47, GLGA_RHILW;  Q9EUT5, GLGA_RHITR;  Q7UPY2, GLGA_RHOBA;  
B6IUD9, GLGA_RHOCS;  Q221N9, GLGA_RHOFD;  Q2J308, GLGA_RHOP2;  
Q07TH8, GLGA_RHOP5;  Q6NCT7, GLGA_RHOPA;  Q21BQ1, GLGA_RHOPB;  
Q13EA7, GLGA_RHOPS;  B3Q9C2, GLGA_RHOPT;  Q2RS50, GLGA_RHORT;  
Q9RNH6, GLGA_RHOS4;  A4WRM2, GLGA_RHOS5;  Q165E4, GLGA_ROSDO;  
B5F8Q1, GLGA_SALA4;  A9MMA3, GLGA_SALAR;  Q57IU1, GLGA_SALCH;  
B5FKF4, GLGA_SALDC;  B5R394, GLGA_SALEP;  B4T867, GLGA_SALHS;  
B4SVN2, GLGA_SALNS;  Q5PM09, GLGA_SALPA;  A9MTV1, GLGA_SALPB;  
C0Q0K9, GLGA_SALPC;  B5BHH9, GLGA_SALPK;  B4TY86, GLGA_SALSV;  
Q8Z232, GLGA_SALTI;  P05416, GLGA_SALTY;  A8GKU7, GLGA_SERP5;  
B2U4G3, GLGA_SHIB3;  Q31VJ4, GLGA_SHIBS;  Q32AV6, GLGA_SHIDS;  
Q0SZN5, GLGA_SHIF8;  Q83PV4, GLGA_SHIFL;  Q3YW96, GLGA_SHISS;  
Q3K1K2, GLGA_STRA1;  Q8E5V5, GLGA_STRA3;  Q8E079, GLGA_STRA5;  
C0M712, GLGA_STRE4;  A8AYH0, GLGA_STRGC;  Q8CWX0, GLGA_STRMU;  
Q04KG5, GLGA_STRP2;  B5E4N6, GLGA_STRP4;  C1C7B7, GLGA_STRP7;  
B1IBR0, GLGA_STRPI;  B8ZPW5, GLGA_STRPJ;  Q97QS5, GLGA_STRPN;  
B2IPY4, GLGA_STRPS;  Q8DPS3, GLGA_STRR6;  C0MH77, GLGA_STRS7;  
A3CM04, GLGA_STRSV;  B9DRS8, GLGA_STRU0;  C1CEB0, GLGA_STRZJ;  
C1CKI7, GLGA_STRZP;  C1CRM3, GLGA_STRZT;  B2V5P9, GLGA_SULSY;  
Q935Y7, GLGA_SYNE7;  Q5N1P1, GLGA_SYNP6;  A5GKI7, GLGA_SYNPW;  
Q7U7I2, GLGA_SYNPX;  A5GT38, GLGA_SYNR3;  Q0I9Y8, GLGA_SYNS3;  
Q3AVF9, GLGA_SYNS9;  Q3AKK1, GLGA_SYNSC;  B7IFD0, GLGA_THEAB;  
P58395, GLGA_THECA;  Q8DKU2, GLGA_THEEB;  A8F720, GLGA_THELT;  
A6LJ53, GLGA_THEM4;  Q9WZZ7, GLGA_THEMA;  A5IIN8, GLGA_THEP1;  
B1LC39, GLGA_THESQ;  Q72G68, GLGA_THET2;  Q5SMC5, GLGA_THET8;  
B5YG91, GLGA_THEYD;  Q31IB5, GLGA_THICR;  Q3SH79, GLGA_THIDA;  
B8GNA4, GLGA_THISH;  Q73MC7, GLGA_TREDE;  Q113E3, GLGA_TRIEI;  
C5CJ75, GLGA_VARPS;  A5F7G0, GLGA_VIBC3;  Q9KRB6, GLGA_VIBCH;  
C3LN49, GLGA_VIBCM;  Q5DZC1, GLGA_VIBF1;  B5EUW2, GLGA_VIBFM;  
Q87QX5, GLGA_VIBPA;  B7VM42, GLGA_VIBSL;  Q8DAR0, GLGA_VIBVU;  
Q7MJ50, GLGA_VIBVY;  Q8PQA3, GLGA_XANAC;  Q3BYI1, GLGA_XANC5;  
Q4UZL8, GLGA_XANC8;  Q8PDD2, GLGA_XANCP;  Q2P9F6, GLGA_XANOM;  
B2SVT3, GLGA_XANOP;  Q5H6Q4, GLGA_XANOR;  A1JSI5, GLGA_YERE8;  
A7FNX2, GLGA_YERP3;  Q1C1E2, GLGA_YERPA;  B2K6F8, GLGA_YERPB;  
Q8ZA78, GLGA_YERPE;  A9R5M0, GLGA_YERPG;  Q1CDL6, GLGA_YERPN;  
A4TQU9, GLGA_YERPP;  Q664I5, GLGA_YERPS;  B1JHY0, GLGA_YERPY;  
O82627, SSG1_ANTMA;  Q43093, SSG2_PEA;  Q9FNF2, SSY1_ARATH;  
A2Y9M4, SSY1_ORYSI;  Q0DEC8, SSY1_ORYSJ;  P93568, SSY1_SOLTU;  
Q43654, SSY1_WHEAT;  Q7XE48, SSY21_ORYSJ;  Q6Z2T8, SSY22_ORYSJ;  
P0C586, SSY23_ORYSI;  Q0DDE3, SSY23_ORYSJ;  Q9MAC8, SSY2_ARATH;  
Q43847, SSY2_SOLTU;  F4IAG2, SSY3_ARATH;  Q43846, SSY3_SOLTU;  
Q0WVX5, SSY4_ARATH;  

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All UniProtKB/Swiss-Prot entries referenced in this entry, with possibility to download in different formats, align etc.
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.-.-.-