glycogen branching enzyme; Provisional

1,4-alpha-glucan branching protein GlgB.

glycogen branching enzyme; Provisional

alpha-1,4-glucan:alpha-1,4-glucan 6-glycosyltransferase. This model describes the glycogen branching enzymes which are responsible for the transfer of chains of approx. 7 alpha(1--4)-linked glucosyl residues to other similar chains (in new alpha(1--6) linkages) in the biosynthesis of glycogen. This enzyme is a member of the broader amylase family of starch hydrolases which fold as (beta/alpha)8 barrels, the so-called TIM-barrel structure. All of the sequences comprising the seed of this model have been experimentally characterized. This model encompasses both bacterial and eukaryotic species. No archaea have this enzyme, although Aquifex aolicus does. Two species, Bacillus thuringiensis and Clostridium perfringens have two sequences each which are annotated as amylases. These annotations are aparrently in error. GP|18143720 from C. perfringens, for instance, contains the note "674 aa, similar to gp:A14658_1 amylase (1,4-alpha-glucan branching enzyme (EC 2.4.1.18) ) from Bacillus thuringiensis (648 aa); 51.1% identity in 632 aa overlap." A branching enzyme from Porphyromonas gingivales, OMNI|PG1793, appears to be more closely related to the eukaryotic species (across a deep phylogenetic split) and may represent an instance of lateral transfer from this species' host. A sequence from Arabidopsis thaliana, GP|9294564, scores just above trusted, but appears either to contain corrupt sequence or, more likely, to be a pseudogene as some of the conserved catalytic residues common to the alpha amylase family are not conserved here. [Energy metabolism, Biosynthesis and degradation of polysaccharides]

1,4-alpha-glucan branching protein GlgB.

Crystalstructure of branching enzyme from Cyanothece sp. ATCC 51142 [Crocosphaera subtropica ATCC 51142],5GQV_A Crystal structure of branching enzyme from Cyanothece sp. ATCC 51142 in complex with maltohexaose [Crocosphaera subtropica ATCC 51142],5GQY_A Crystal structure of branching enzyme from Cyanothece sp. ATCC 51142 in complex with maltoheptaose [Crocosphaera subtropica ATCC 51142]

Crystalstructure of branching enzyme Y500A mutant from Cyanothece sp. ATCC 51142 [Crocosphaera subtropica ATCC 51142]

Crystalstructure of branching enzyme L541A mutant from Cyanothece sp. ATCC 51142 [Crocosphaera subtropica ATCC 51142],5GR4_A Crystal structure of branching enzyme L541A mutant from Cyanothece sp. ATCC 51142 in complex with maltoheptaose [Crocosphaera subtropica ATCC 51142]

Crystalstructure of branching enzyme W610A mutant from Cyanothece sp. ATCC 51142 [Crocosphaera subtropica ATCC 51142]

Crystalstructure of branching enzyme W610N mutant from Cyanothece sp. ATCC 51142 [Crocosphaera subtropica ATCC 51142],5GQX_A Crystal structure of branching enzyme W610N mutant from Cyanothece sp. ATCC 51142 in complex with maltoheptaose [Crocosphaera subtropica ATCC 51142]

1,4-alpha-glucan branching enzyme GlgB OS=Fusobacterium nucleatum subsp. nucleatum (strain ATCC 25586 / DSM 15643 / BCRC 10681 / CIP 101130 / JCM 8532 / KCTC 2640 / LMG 13131 / VPI 4355) OX=190304 GN=glgB PE=3 SV=1

1,4-alpha-glucan branching enzyme GlgB OS=Halothermothrix orenii (strain H 168 / OCM 544 / DSM 9562) OX=373903 GN=glgB PE=3 SV=1

1,4-alpha-glucan branching enzyme GlgB OS=Clostridium perfringens (strain ATCC 13124 / DSM 756 / JCM 1290 / NCIMB 6125 / NCTC 8237 / Type A) OX=195103 GN=glgB PE=3 SV=1

1,4-alpha-glucan branching enzyme GlgB 2 OS=Clostridium perfringens (strain SM101 / Type A) OX=289380 GN=glgB2 PE=3 SV=1

1,4-alpha-glucan branching enzyme GlgB OS=Bacillus caldolyticus OX=1394 GN=glgB PE=1 SV=1