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treY treY treZ treZ treX treX treS treS glgE glgE malQ malQ otsA otsA mak mak otsB2 otsB2 glgB glgB otsB1 otsB1
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treYMaltooligosyltrehalose synthase TreY; Catalyzes the conversion of maltooligosaccharide into the non-reducing saccharide, maltooligosyl trehalose (alpha-maltooligosyl alpha-D-glucoside) by intramolecular transglycosylation. (765 aa)    
Predicted Functional Partners:
treZ
Maltooligosyltrehalose trehalohydrolase TreZ; Is involved in the biosynthesis of trehalose but not in that of capsular glucan and glycogen.
 
0.999
treX
Rv1564c, (MTCY48.01), len: 721 aa. Probable treX (previously called glgX), Maltooligosyltrehalose synthase. Strong similarity to D83245|g1890053 treX, glycogen debranching enzyme (glgX) from Sulfolobus acidocaldarius (713 aa), FASTA score: opt: 2396, E(): 0, (48.4% identity in 709 aa overlap); similar to GLGX_HAEIN|P45178 glycogen operon protein glgx (659 aa), FASTA scores: opt: 1512, E(): 0, (42.3% identity in 645 aa overlap); Belongs to the glycosyl hydrolase 13 family.
 
 0.999
treS
Trehalose synthase TreS; Catalyzes the reversible interconversion of maltose and trehalose by transglucosylation. Also displays amylase activity, catalyzing the endohydrolysis of (1->4)-alpha-D- glucosidic linkages in glycogen and maltooligosaccharides such as maltoheptaose, to produce maltose which then can be converted to trehalose. TreS plays a key role in the utilization of trehalose for the production of glycogen and alpha-glucan via the TreS-Pep2 branch involved in the biosynthesis of maltose-1-phosphate (M1P). Might also function as a sensor and/or regulator of trehalose levels [...]
 
 
 0.998
glgE
Probable glucanase GlgE; Essential maltosyltransferase that uses maltose 1-phosphate (M1P) as the sugar donor to elongate linear or branched alpha-(1->4)- glucans. Maltooligosaccharides with a degree of polymerization (DP) superior or equal to 4 are efficient acceptors, with DP5 being optimal in the GlgE-catalyzed polymerization with M1P. Is specific for the alpha-anomer of M1P as substrate, since the beta-anomer of M1P gives no activity. Exhibits an alpha-retaining catalytic mechanism. Is also able to catalyze the reverse reaction in vitro, releasing M1P from glycogen in the presence [...]
 
  
 0.983
malQ
Probable 4-alpha-glucanotransferase MalQ (amylomaltase) (disproportionating enzyme) (D-enzyme); Rv1781c, (MTV049.03c), len: 724 aa. Probable malQ,4-alpha-glucanotransferase, similar to many, e.g. P15977|MALQ_ECOLI 4-alpha-glucanotransferase (694 aa),FASTA scores: opt: 964, E(): 0, (31.8% identity in 694 aa overlap). Belongs to the disproportionating enzyme family.
  
 0.982
otsA
Trehalose-6-phosphate synthase; Involved in the production of glycogen and alpha-glucan via the TreS-Pep2 branch involved in the biosynthesis of maltose-1- phosphate (M1P), and probably in the osmoprotection via the biosynthesis of trehalose. Catalyzes the transfer of glucose from UDP-glucose (UDP-Glc) to D-glucose 6- phosphate (Glc-6-P) to form trehalose-6-phosphate. Is specific for the glucosyl acceptor (Glc-6-P cannot be replaced by either mannose-6-P, fructose-6-P or glucosamine-6-P), but any of the glucose sugar nucleotides can be used as glucosyl donors. It is more active with th [...]
  
  
 0.971
mak
Maltokinase Mak; Catalyzes the ATP-dependent phosphorylation of maltose to maltose 1-phosphate (By similarity). Is involved in a branched alpha- glucan biosynthetic pathway from trehalose, together with TreS, GlgE and GlgB; Belongs to the aminoglycoside phosphotransferase family.
 
  
 0.961
otsB2
Trehalose 6-phosphate phosphatase OtsB2 (trehalose-phosphatase) (TPP); Removes the phosphate from trehalose 6-phosphate to produce free trehalose.
 
  
 0.959
glgB
1,4-alpha-glucan branching enzyme GlgB (glycogen branching enzyme); Essential enzyme that catalyzes the formation of the alpha- 1,6-glucosidic linkages in glucan chains by scission of a 1,4-alpha- linked oligosaccharide from growing alpha-1,4-glucan chains and the subsequent attachment of the oligosaccharide to the alpha-1,6 position. Is involved in the biosynthesis of both glycogen and capsular alpha-D- glucan.
 
  
 0.909
otsB1
Rv2006, (MTCY39.11c), len: 1327 aa. OtsB1,trehalose-6-phosphate phosphatase (see citations below). Belongs to Glycosyl hydrolases family 65. Note that previously known as otsB. Predicted possible vaccine candidate (See Zvi et al., 2008).
 
  
 0.886
Your Current Organism:
Mycobacterium tuberculosis H37Rv
NCBI taxonomy Id: 83332
Other names: M. tuberculosis H37Rv, Mycobacterium sp. H37Rv, Mycobacterium tuberculosis str. H37Rv, Mycobacterium tuberculosis strain H37Rv
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