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ENZYME entry: EC 2.4.1.18

Accepted Name
1,4-alpha-glucan branching enzyme
Alternative Name(s)
amylo-(1,4->1,6)-transglycosylase
amylo-(1,4 to 1,6)transglucosidase
branching enzyme
glycogen branching enzyme
Reaction catalysed
Transfers a segment of a (1->4)-alpha-D-glucan chain to a primary hydroxy group in a similar glucan chain
Comment(s)
  • Converts amylose into amylopectin.
  • The description (official name) requires a qualification depending on the product, glycogen or amylopectin, e.g. glycogen branching enzyme, amylopectin branching enzyme.
  • The latter has frequently been termed Q-enzyme.
Cross-references
BRENDA2.4.1.18
EC2PDB2.4.1.18
ExplorEnz2.4.1.18
PRIAM enzyme-specific profiles2.4.1.18
KEGG Ligand Database for Enzyme Nomenclature2.4.1.18
IUBMB Enzyme Nomenclature2.4.1.18
IntEnz2.4.1.18
MEDLINEFind literature relating to 2.4.1.18
MetaCyc2.4.1.18
Rhea expert-curated reactions2.4.1.18
UniProtKB/Swiss-Prot
P9WQ26, BE_MYCTOP9WQ27, BE_MYCTUQ5JDJ7, BE_THEKO
Q5SH28, BE_THET8O23647, GLGB1_ARATHQ8XPA2, GLGB1_CLOPE
Q0SWZ1, GLGB1_CLOPSQ41058, GLGB1_PEAQ2K487, GLGB1_RHIEC
Q1MBS9, GLGB1_RHIJ3Q82JF0, GLGB1_STRAWQ59833, GLGB1_STRCO
Q8PR13, GLGB1_XANACQ3BZE1, GLGB1_XANC5Q4V0E2, GLGB1_XANC8
Q8PE48, GLGB1_XANCPQ2P9F7, GLGB1_XANOMQ5H6H2, GLGB1_XANOR
Q9LZS3, GLGB2_ARATHQ8XK15, GLGB2_CLOPEQ0SSN2, GLGB2_CLOPS
Q41059, GLGB2_PEAQ2JZ21, GLGB2_RHIECQ1M3A7, GLGB2_RHIJ3
Q825Q8, GLGB2_STRAWQ59832, GLGB2_STRCOQ8PQA2, GLGB2_XANAC
Q3BYI0, GLGB2_XANC5Q4UZL7, GLGB2_XANC8Q8PDD1, GLGB2_XANCP
Q2P949, GLGB2_XANOMQ5H6Q3, GLGB2_XANORD2WL32, GLGB3_ARATH
A3MZ64, GLGB_ACTP2B3H0J1, GLGB_ACTP7B0BT96, GLGB_ACTPJ
A6VP15, GLGB_ACTSZQ8U8L4, GLGB_AGRFCQ21WG7, GLGB_ALBFT
Q5DZB8, GLGB_ALIF1Q0AA26, GLGB_ALKEHO66936, GLGB_AQUAE
Q5NXV7, GLGB_AROAEQ96VA4, GLGB_ASPORC3PCL8, GLGB_BACAA
C3LC26, GLGB_BACACQ81K82, GLGB_BACANB7JDF1, GLGB_BACC0
Q72YJ3, GLGB_BACC1B7IM37, GLGB_BACC2C1EX54, GLGB_BACC3
B7HBC7, GLGB_BACC4B7HTX9, GLGB_BACC7P30537, GLGB_BACCL
A7GUA1, GLGB_BACCNB9J2G8, GLGB_BACCQQ816G6, GLGB_BACCR
Q632H1, GLGB_BACCZQ6HC15, GLGB_BACHKQ65FS4, GLGB_BACLD
A9VMV8, GLGB_BACMKP39118, GLGB_BACSUQ9RQI5, GLGB_BERDE
Q8G5L0, GLGB_BIFLOQ7WII7, GLGB_BORBRQ7W6L4, GLGB_BORPA
Q7VYK0, GLGB_BORPEQ89FD3, GLGB_BRADUA5EPZ7, GLGB_BRASB
A4Z005, GLGB_BRASOA0KDG4, GLGB_BURCHQ0B3Y4, GLGB_BURCM
Q39N89, GLGB_BURL3Q1BVW7, GLGB_BURO1A3NU16, GLGB_BURP0
Q3JTG5, GLGB_BURP1A3N8B3, GLGB_BURP6Q63T91, GLGB_BURPS
Q2T6R3, GLGB_BURTAA4JR39, GLGB_BURVGP30539, GLGB_BUTFI
Q6FJV0, GLGB_CANGAB3PGN4, GLGB_CELJUA3PIQ5, GLGB_CERS1
Q3J3M6, GLGB_CERS4Q11EX1, GLGB_CHESBQ5L6K4, GLGB_CHLAB
Q823Y5, GLGB_CHLCVQ253M6, GLGB_CHLFFQ9PL51, GLGB_CHLMU
Q9Z876, GLGB_CHLPNB0B998, GLGB_CHLT2Q3KKH0, GLGB_CHLTA
B0BAX7, GLGB_CHLTBO84874, GLGB_CHLTRA8AQY3, GLGB_CITK8
Q0TQ16, GLGB_CLOP1Q6NHR6, GLGB_CORDIQ8FQ12, GLGB_COREF
Q8NR40, GLGB_CORGLQ4JUK5, GLGB_CORJKP0CN83, GLGB_CRYNB
P0CN82, GLGB_CRYNJQ0K0X8, GLGB_CUPNHQ46TF2, GLGB_CUPPJ
Q6A8Q7, GLGB_CUTAKQ6BXN1, GLGB_DEBHAQ47II8, GLGB_DECAR
Q1IZQ3, GLGB_DEIGDQ9RTB7, GLGB_DEIRAQ24VW3, GLGB_DESHY
Q729V5, GLGB_DESVHA1VC54, GLGB_DESVVQ8GQC5, GLGB_DICCH
Q555Q9, GLGB_DICDIA7ZSW5, GLGB_ECO24Q8X6X6, GLGB_ECO57
A8A5P2, GLGB_ECOHSA1AGW5, GLGB_ECOK1Q0TC27, GLGB_ECOL5
Q8FCR7, GLGB_ECOL6B1IP32, GLGB_ECOLCP07762, GLGB_ECOLI
Q1R5J4, GLGB_ECOUTQ9Y8H3, GLGB_EMENIA4WFL5, GLGB_ENT38
Q757Q6, GLGB_EREGSQ6T308, GLGB_FELCAQ2J6Q9, GLGB_FRACC
B0TZI5, GLGB_FRAP2Q14J36, GLGB_FRAT1A7NAI2, GLGB_FRATF
Q2A4U7, GLGB_FRATHB2SFM7, GLGB_FRATMA0Q593, GLGB_FRATN
Q0BN67, GLGB_FRATOQ5NHN4, GLGB_FRATTA4IZK2, GLGB_FRATW
Q8RF62, GLGB_FUSNNP30538, GLGB_GEOSEQ7NL20, GLGB_GLOVI
Q0BU54, GLGB_GRABCQ4QK67, GLGB_HAEI8A5UEJ2, GLGB_HAEIG
P45177, GLGB_HAEINB8CVY1, GLGB_HALOHQ0I3H7, GLGB_HISS1
B0UU89, GLGB_HISS2Q6EAS5, GLGB_HORSEQ04446, GLGB_HUMAN
Q31IB6, GLGB_HYDCUQ28MN2, GLGB_JANSCP52980, GLGB_KITAU
A6TF51, GLGB_KLEP7Q6CX53, GLGB_KLULAQ5FL68, GLGB_LACAC
Q890J1, GLGB_LACPLQ6AEU4, GLGB_LEIXXQ1WSM8, GLGB_LIGS1
Q2W2Q6, GLGB_MAGSAQ08047, GLGB_MAIZEQ65TI0, GLGB_MANSM
A1U0K1, GLGB_MARN8Q608L5, GLGB_METCAQ1H1K2, GLGB_METFK
Q9D6Y9, GLGB_MOUSEP59816, GLGB_MYCBOA1KIB6, GLGB_MYCBP
Q73X75, GLGB_MYCPAA0R1Y4, GLGB_MYCS2A3Q396, GLGB_MYCSJ
A1UJW9, GLGB_MYCSKQ1B568, GLGB_MYCSSA5U226, GLGB_MYCTA
P9WN44, GLGB_MYCTOP9WN45, GLGB_MYCTUA0PUI6, GLGB_MYCUA
Q1D654, GLGB_MYXXDQ0AGJ0, GLGB_NITECQ81ZU6, GLGB_NITEU
Q1QNB1, GLGB_NITHXQ2YB47, GLGB_NITMUQ3JCN0, GLGB_NITOC
Q3STC2, GLGB_NITWNQ5Z0W8, GLGB_NOCFAQ8YYX9, GLGB_NOSS1
Q2G7S5, GLGB_NOVADQ8CZE8, GLGB_OCEIHQ30Z14, GLGB_OLEA2
Q01401, GLGB_ORYSJQ7U646, GLGB_PARMWQ6MAB4, GLGB_PARUW
Q13S07, GLGB_PARXLQ9CN94, GLGB_PASMUQ6CZK0, GLGB_PECAS
Q6LHN1, GLGB_PHOPRQ6L2Z9, GLGB_PICTOA3PBV8, GLGB_PROM0
A2C142, GLGB_PROM1A8G3V0, GLGB_PROM2A2CAR9, GLGB_PROM3
A9BAY7, GLGB_PROM4A2BVP7, GLGB_PROM5Q31BV0, GLGB_PROM9
Q7VBL4, GLGB_PROMAQ7V8B5, GLGB_PROMMQ7V299, GLGB_PROMP
A2BQ65, GLGB_PROMSQ46LW6, GLGB_PROMTQ48IE2, GLGB_PSE14
Q15VD0, GLGB_PSEA6A6V628, GLGB_PSEA7Q9I1W2, GLGB_PSEAE
Q4KCQ3, GLGB_PSEF5Q3KD78, GLGB_PSEPFQ88FN1, GLGB_PSEPK
Q881X0, GLGB_PSESMQ4ZTJ2, GLGB_PSEU2Q8XT76, GLGB_RALN1
Q8NKE1, GLGB_RHIIDQ985P4, GLGB_RHILOQ92M14, GLGB_RHIME
P52979, GLGB_RHIRDQ7UVH1, GLGB_RHOBAQ0SGR9, GLGB_RHOJR
Q93HU3, GLGB_RHOMRQ2IYX0, GLGB_RHOP2Q07K87, GLGB_RHOP5
Q6N3P9, GLGB_RHOPAQ210H1, GLGB_RHOPBQ133N2, GLGB_RHOPS
Q2RR72, GLGB_RHORTQ165E2, GLGB_ROSDOQ1AZ86, GLGB_RUBXD
Q21M30, GLGB_SACD2A9MMA0, GLGB_SALARQ57IT8, GLGB_SALCH
Q5PM06, GLGB_SALPAA9MTV4, GLGB_SALPBQ2S4A0, GLGB_SALRD
Q8Z235, GLGB_SALTIQ8ZLG5, GLGB_SALTYA8GKV0, GLGB_SERP5
B8EAX1, GLGB_SHEB2A3D286, GLGB_SHEB5A6WKY2, GLGB_SHEB8
A9KTJ1, GLGB_SHEB9Q081Q4, GLGB_SHEFNQ8EGU7, GLGB_SHEON
A4Y4U3, GLGB_SHEPCQ0HGI8, GLGB_SHESMQ0HST5, GLGB_SHESR
A1RLX8, GLGB_SHESWQ31VJ1, GLGB_SHIBSQ32AV3, GLGB_SHIDS
Q0SZN2, GLGB_SHIF8Q83PV3, GLGB_SHIFLQ3YW93, GLGB_SHISS
P30924, GLGB_SOLTUQ3K1K5, GLGB_STRA1Q8E5V8, GLGB_STRA3
Q8E081, GLGB_STRA5A8AYH3, GLGB_STRGCQ8DT52, GLGB_STRMU
Q04KG8, GLGB_STRP2Q97QS8, GLGB_STRPNQ8DPS6, GLGB_STRR6
A3CM01, GLGB_STRSVP16954, GLGB_SYNE7Q2JT08, GLGB_SYNJA
Q2JK68, GLGB_SYNJBQ5N4W5, GLGB_SYNP6A5GJR7, GLGB_SYNPW
A5GSG4, GLGB_SYNR3Q0I8Y2, GLGB_SYNS3Q3AYE2, GLGB_SYNS9
Q3AKV6, GLGB_SYNSCP52981, GLGB_SYNY3Q47SE7, GLGB_THEFY
Q8DLB8, GLGB_THEVBQ3SH78, GLGB_THIDAQ114I1, GLGB_TRIEI
Q3M473, GLGB_TRIV2Q9KNE8, GLGB_VIBCHQ87FR0, GLGB_VIBPA
Q8D4P0, GLGB_VIBVUQ7MG90, GLGB_VIBVYQ6CCT1, GLGB_YARLI
P32775, GLGB_YEASTA1JSJ0, GLGB_YERE8A7FNX5, GLGB_YERP3
Q1C1D9, GLGB_YERPAQ8ZA75, GLGB_YERPEQ1CDL3, GLGB_YERPN
A4TQV2, GLGB_YERPPQ664I2, GLGB_YERPS

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.-.-
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