ID   GLGB_PROM0              Reviewed;         754 AA.
AC   A3PBV8;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   03-APR-2007, sequence version 1.
DT   27-MAR-2024, entry version 104.
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=P9301_06101;
OS   Prochlorococcus marinus (strain MIT 9301).
OC   Bacteria; Cyanobacteriota; Cyanophyceae; Synechococcales;
OC   Prochlorococcaceae; Prochlorococcus.
OX   NCBI_TaxID=167546;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9301;
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; CP000576; ABO17233.1; -; Genomic_DNA.
DR   RefSeq; WP_011862600.1; NC_009091.1.
DR   AlphaFoldDB; A3PBV8; -.
DR   SMR; A3PBV8; -.
DR   STRING; 167546.P9301_06101; -.
DR   CAZy; CBM48; Carbohydrate-Binding Module Family 48.
DR   CAZy; GH13; Glycoside Hydrolase Family 13.
DR   KEGG; pmg:P9301_06101; -.
DR   eggNOG; COG0296; Bacteria.
DR   HOGENOM; CLU_004245_3_2_3; -.
DR   OrthoDB; 9800174at2; -.
DR   UniPathway; UPA00164; -.
DR   Proteomes; UP000001430; 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; Reference proteome; Transferase.
FT   CHAIN           1..754
FT                   /note="1,4-alpha-glucan branching enzyme GlgB"
FT                   /id="PRO_1000044988"
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   754 AA;  88129 MW;  C93A2D6E423E2313 CRC64;
     MIETIQADWI KSEAINLENC CNDNPLKILG PHFYEEQWVI RVWVPEADEV KVNFKDKTYK
     AESINHKWLF EAILPENPNS NYEINISRGG ITHTQHDPWS YREEWMGEVD RHLFAEGNHH
     HIWEKMGAHL IEDKNQKGVM FCIWAPNAKS ISIIGDINSW DGRHNPMQKR LGGIWELFMP
     MMKEGDKYKY EIRTQQGHIY EKADPYGFLH EVRPQNGSIV SKLKNFNWSD SSWISNRDSS
     SQINKPISVY EMHLGSWLHE STDNKYLDDN GEPRDPVPAA DLKPGTRLLT YPELTKKLIP
     YVKERGFTHI ELMPISEHPF DGSWGYQVTG WYAPTSRFGT PNEFREFVNK CHEEGIGVIL
     DWVPGHFPKD KHGLAFFDGC HLYEHGDSRI GEHKEWGTLI FNYSRNEVRN FLVANLVYWF
     EEFHIDGIRV DAVASMLYRD YLRPDGEWIP NENGGNENIE AVKFLQQANH VLFQHFPGAL
     SIAEESTTWP MVTKPTDMGG LGFNLKWNMG WMHDMLDYFE IDPWFRQFHQ NSVTFSITYN
     YTENFMLALS HDEVVHGKSH LLHKMPGDDW KKYANTRALL TYMWTHPGKK TIFMGMEFGQ
     RQEWNVWDDL QWELLEFEPH RGIRNLIDDL NKLYKNEPAL WKNDFDPYGF QWIDCNDKSN
     SVISFMRRES DTNEWLVIVA NFTPNTHGSY KIGVPVEGFY KEIFNSDGSR YGGSNKGNMG
     GKDTINYNIH DYQNALELAL PPLSVSIFKH QSEK
//