ID   GLGB_PROM3              Reviewed;         756 AA.
AC   A2CAR9;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-FEB-2007, sequence version 1.
DT   03-AUG-2022, entry version 95.
DE   RecName: Full=1,4-alpha-glucan branching enzyme GlgB {ECO:0000255|HAMAP-Rule:MF_00685};
DE            EC=2.4.1.18 {ECO:0000255|HAMAP-Rule:MF_00685};
DE   AltName: Full=1,4-alpha-D-glucan:1,4-alpha-D-glucan 6-glucosyl-transferase {ECO:0000255|HAMAP-Rule:MF_00685};
DE   AltName: Full=Alpha-(1->4)-glucan branching enzyme {ECO:0000255|HAMAP-Rule:MF_00685};
DE   AltName: Full=Glycogen branching enzyme {ECO:0000255|HAMAP-Rule:MF_00685};
DE            Short=BE {ECO:0000255|HAMAP-Rule:MF_00685};
GN   Name=glgB {ECO:0000255|HAMAP-Rule:MF_00685}; OrderedLocusNames=P9303_18371;
OS   Prochlorococcus marinus (strain MIT 9303).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=59922;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9303;
RX   PubMed=18159947; DOI=10.1371/journal.pgen.0030231;
RA   Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S.,
RA   Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M.,
RA   Richardson P., Chisholm S.W.;
RT   "Patterns and implications of gene gain and loss in the evolution of
RT   Prochlorococcus.";
RL   PLoS Genet. 3:2515-2528(2007).
CC   -!- FUNCTION: Catalyzes the formation of the alpha-1,6-glucosidic linkages
CC       in glycogen by scission of a 1,4-alpha-linked oligosaccharide from
CC       growing alpha-1,4-glucan chains and the subsequent attachment of the
CC       oligosaccharide to the alpha-1,6 position. {ECO:0000255|HAMAP-
CC       Rule:MF_00685}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Transfers a segment of a (1->4)-alpha-D-glucan chain to a
CC         primary hydroxy group in a similar glucan chain.; EC=2.4.1.18;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00685};
CC   -!- PATHWAY: Glycan biosynthesis; glycogen biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_00685}.
CC   -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_00685}.
CC   -!- SIMILARITY: Belongs to the glycosyl hydrolase 13 family. GlgB
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_00685}.
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DR   EMBL; CP000554; ABM78579.1; -; Genomic_DNA.
DR   AlphaFoldDB; A2CAR9; -.
DR   SMR; A2CAR9; -.
DR   STRING; 59922.P9303_18371; -.
DR   CAZy; CBM48; Carbohydrate-Binding Module Family 48.
DR   CAZy; GH13; Glycoside Hydrolase Family 13.
DR   EnsemblBacteria; ABM78579; ABM78579; P9303_18371.
DR   KEGG; pmf:P9303_18371; -.
DR   HOGENOM; CLU_004245_3_2_3; -.
DR   OMA; FGMKWMM; -.
DR   BioCyc; PMAR59922:G1G80-1592-MON; -.
DR   UniPathway; UPA00164; -.
DR   Proteomes; UP000002274; Chromosome.
DR   GO; GO:0003844; F:1,4-alpha-glucan branching enzyme activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0102752; F:1,4-alpha-glucan branching enzyme activity (using a glucosylated glycogenin as primer for glycogen synthesis); IEA:UniProtKB-EC.
DR   GO; GO:0043169; F:cation binding; IEA:InterPro.
DR   GO; GO:0004553; F:hydrolase activity, hydrolyzing O-glycosyl compounds; IEA:InterPro.
DR   GO; GO:0005978; P:glycogen biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd02855; E_set_GBE_prok_N; 1.
DR   Gene3D; 2.60.40.10; -; 2.
DR   Gene3D; 2.60.40.1180; -; 1.
DR   HAMAP; MF_00685; GlgB; 1.
DR   InterPro; IPR006048; A-amylase/branching_C.
DR   InterPro; IPR037439; Branching_enzy.
DR   InterPro; IPR006407; GlgB.
DR   InterPro; IPR044143; GlgB_N_E_set_prok.
DR   InterPro; IPR006047; Glyco_hydro_13_cat_dom.
DR   InterPro; IPR004193; Glyco_hydro_13_N.
DR   InterPro; IPR013780; Glyco_hydro_b.
DR   InterPro; IPR017853; Glycoside_hydrolase_SF.
DR   InterPro; IPR013783; Ig-like_fold.
DR   InterPro; IPR014756; Ig_E-set.
DR   PANTHER; PTHR43651; PTHR43651; 1.
DR   Pfam; PF00128; Alpha-amylase; 1.
DR   Pfam; PF02806; Alpha-amylase_C; 1.
DR   Pfam; PF02922; CBM_48; 1.
DR   PIRSF; PIRSF000463; GlgB; 1.
DR   SMART; SM00642; Aamy; 1.
DR   SUPFAM; SSF51445; SSF51445; 1.
DR   SUPFAM; SSF81296; SSF81296; 2.
DR   TIGRFAMs; TIGR01515; branching_enzym; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Glycogen biosynthesis; Glycogen metabolism;
KW   Glycosyltransferase; Transferase.
FT   CHAIN           1..756
FT                   /note="1,4-alpha-glucan branching enzyme GlgB"
FT                   /id="PRO_1000044990"
FT   ACT_SITE        431
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00685"
FT   ACT_SITE        484
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00685"
SQ   SEQUENCE   756 AA;  87734 MW;  A2E8EA9D0B967F29 CRC64;
     MTTSVALDWV VQDGQRLAEC RHDHPFSLLG PQSHEGQWIV RIWMPEASQV ELLCDGRTTA
     MTTPNHSWIF EAALNQDPGR TYQLRVKRAG IVHEQHDPWA FHDEWMGEMD RHLFAEGNHH
     HIWQRMGAHL MEREGVEGVM FCLWAPRACS VAVLGELNGW DGRHHPMQRR QGGLWELFIP
     GFKEGTLYKY EIRTQDGHCY QKADPYGFQH EVRPATSSVV ARLDRYQWQD EQWMRQRDSR
     NALDQPISVY EMHLGSWIHA ATDEPYIELD GTPRAPVLAA DMKPGARLLT YPELADQLIP
     YVKDRGFTHI ELMPISEHPF DGSWGYQVTG WYAPTSRFGS PDEFRAFVDR CHAEGLGVII
     DWVPGHFPKD GHGLAFFDGT HLYEHSDPRI GEHKEWGTLI FNYSRNEVRN FLVANLVYWF
     EQFHIDGIRV DAVASMLYRD YLRPDGEWIA NEDGGRENTE AVRFLQQANH VLFQHFPGAL
     SIAEESTTWP MVTQPTDMGG LGFNLKWNMG WMHDMLDYFE LDPWFRQFHQ NNITFSIWYT
     YTENFMLALS HDEVVHGKSN LLHKMPGDDW QKCANVRALL AYMWTHPGKK TIFMGMEFGQ
     RSEWNVWGDL QWELLTHDPH KGLQKLVDDL NTFYKAEPAL WKDDFDQYGF QWIDCNDNRH
     SIISFMRRES SGGTWLVVVA NFTPQSHSNY RIGVPIGGYY EEVFNTDSSC YGGRNLGNMG
     GKNTDEFNIH GYEQSLELCL PALSVLVFRH DPKRSL