ID   GLGB_PROM1              Reviewed;         755 AA.
AC   A2C142;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-FEB-2007, sequence version 1.
DT   27-MAR-2024, entry version 106.
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};
GN   OrderedLocusNames=NATL1_06401;
OS   Prochlorococcus marinus (strain NATL1A).
OC   Bacteria; Cyanobacteriota; Cyanophyceae; Synechococcales;
OC   Prochlorococcaceae; Prochlorococcus.
OX   NCBI_TaxID=167555;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NATL1A;
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; CP000553; ABM75202.1; -; Genomic_DNA.
DR   RefSeq; WP_011823366.1; NC_008819.1.
DR   AlphaFoldDB; A2C142; -.
DR   SMR; A2C142; -.
DR   CAZy; CBM48; Carbohydrate-Binding Module Family 48.
DR   CAZy; GH13; Glycoside Hydrolase Family 13.
DR   KEGG; pme:NATL1_06401; -.
DR   eggNOG; COG0296; Bacteria.
DR   HOGENOM; CLU_004245_3_2_3; -.
DR   UniPathway; UPA00164; -.
DR   Proteomes; UP000002592; 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; cd11322; AmyAc_Glg_BE; 1.
DR   CDD; cd02855; E_set_GBE_prok_N; 1.
DR   Gene3D; 3.20.20.80; Glycosidases; 1.
DR   Gene3D; 2.60.40.1180; Golgi alpha-mannosidase II; 1.
DR   Gene3D; 2.60.40.10; Immunoglobulins; 2.
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   NCBIfam; TIGR01515; branching_enzym; 1.
DR   PANTHER; PTHR43651; 1,4-ALPHA-GLUCAN-BRANCHING ENZYME; 1.
DR   PANTHER; PTHR43651:SF3; 1,4-ALPHA-GLUCAN-BRANCHING ENZYME; 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; (Trans)glycosidases; 1.
DR   SUPFAM; SSF81296; E set domains; 2.
DR   SUPFAM; SSF51011; Glycosyl hydrolase domain; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Glycogen biosynthesis; Glycogen metabolism;
KW   Glycosyltransferase; Transferase.
FT   CHAIN           1..755
FT                   /note="1,4-alpha-glucan branching enzyme GlgB"
FT                   /id="PRO_1000044989"
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   755 AA;  87953 MW;  260074A43CB53AF5 CRC64;
     MTVSILLDSL KDDGQRLSEC RHESPFSILG PQPFKDKWII RIWMPEASEV ELITQQTKIK
     LQNPNHEWIF EGVLEKDPGN DYQIKVNRGG IEHVQHDPWS FRKEWMGEID RHLFAEGNHH
     HIWRKMGAHL TEINKKQGVM FCLWAPHAKS VSVIGDLNSW DGRHHPMQKR LGGIWELFIP
     GLSEGDLYKY EIRTEKGHCY EKADPYGFQH EVRPAKSSVI SKIDSFQWND QSWISNRDNR
     DPLEQPISVY EMHLGSWMHA SSDDPFINSN GEHRAPVPAA DMKPGSRLLT YKELANKVIP
     YVKERGFTHI ELMPISEHPF DGSWGYQVTG WYAPTSRFGS PDEFRAFVDS CHKEGIGIIL
     DWVPGHFPKD QHGLAYFDGS HLYEHSDPRV GEHKEWGTLI FNYSRNEVRN FLVANLIFWF
     DQFHIDGIRV DAVASMLYKD YLRPEGEWIP NEDGGNENFE AVRFLQQANH VLFQHFPGAL
     SIAEESTTWS GVTKPTDMDG LGFNLKWNMG WMHDMLDYFE IDPWFRQFNQ NNITFSICYN
     FTENFMLALS HDEVVHGKSH LLHKMPGDDW QKYANTRALL AYMWTHPGKK TIFMGMEFGQ
     RQEWNVWDDL QWDLLNYEPH KGIQKLVDDL NNLYKREPAL WRNDFDEYGF QWIDCDDNKN
     SVISFMRREK TDGEWLVIVA NFTPQNHSNY RIGVPVDGFY EEIFNTDASQ YGGSNLGNMG
     GKSTDLYNIH GYENSIDLCL PPLSVLVLKH KSKKN
//