<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>2.0</version>
  <creation_date>2012-05-31 13:48:37 -0600</creation_date>
  <update_date>2015-09-13 12:56:10 -0600</update_date>
  <accession>ECMDB01262</accession>
  <m2m_id>M2MDB000315</m2m_id>
  <name>Maltotriose</name>
  <description>Maltotriose is a member of the chemical class known as Trihexoses. These are trisaccharides containing three hexose carbohydrates.   In E. coli, maltotriose is an intermediate involved in degradation of glycogen to glucose. (Ecocyc)</description>
  <synonyms>
    <synonym>4-O-(4-O-Hexopyranosylhexopyranosyl)hexose</synonym>
    <synonym>Amylotriose</synonym>
    <synonym>D-(+)-Maltotriose</synonym>
    <synonym>Delta-(+)-Maltotriose</synonym>
    <synonym>Maltotriose</synonym>
    <synonym>O-a-D-Glucopyranosyl-(1b94)-O-a-D-glucopyranosyl-(1b94)-O-a-D-glucose</synonym>
    <synonym>O-a-delta-Glucopyranosyl-(1b94)-O-a-delta-glucopyranosyl-(1b94)-O-a-delta-glucose</synonym>
    <synonym>O-a-δ-Glucopyranosyl-(1b94)-O-a-δ-glucopyranosyl-(1b94)-O-a-δ-glucose</synonym>
    <synonym>O-alpha-D-Glucopyranosyl-(1beta94)-O-alpha-D-glucopyranosyl-(1beta94)-O-alpha-D-glucose</synonym>
    <synonym>O-alpha-delta-Glucopyranosyl-(1beta94)-O-alpha-delta-glucopyranosyl-(1beta94)-O-alpha-delta-glucose</synonym>
    <synonym>O-α-D-Glucopyranosyl-(1β94)-O-α-D-glucopyranosyl-(1β94)-O-α-D-glucose</synonym>
    <synonym>O-α-δ-Glucopyranosyl-(1β94)-O-α-δ-glucopyranosyl-(1β94)-O-α-δ-glucose</synonym>
    <synonym>δ-(+)-Maltotriose</synonym>
  </synonyms>
  <chemical_formula>C18H32O16</chemical_formula>
  <average_molecular_weight>504.4371</average_molecular_weight>
  <monisotopic_moleculate_weight>504.169034976</monisotopic_moleculate_weight>
  <iupac_name>(2R,3R,4S,5S,6R)-2-{[(2R,3S,4R,5R,6R)-4,5-dihydroxy-2-(hydroxymethyl)-6-{[(2R,3S,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy}oxan-3-yl]oxy}-6-(hydroxymethyl)oxane-3,4,5-triol</iupac_name>
  <traditional_iupac>maltotriose</traditional_iupac>
  <cas_registry_number>1109-28-0</cas_registry_number>
  <smiles>OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@@H](O[C@H]3[C@H](O)[C@@H](O)C(O)O[C@@H]3CO)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O</smiles>
  <inchi>InChI=1S/C18H32O16/c19-1-4-7(22)8(23)12(27)17(31-4)34-15-6(3-21)32-18(13(28)10(15)25)33-14-5(2-20)30-16(29)11(26)9(14)24/h4-29H,1-3H2/t4-,5-,6-,7-,8+,9-,10-,11-,12-,13-,14-,15-,16?,17-,18-/m1/s1</inchi>
  <inchikey>FYGDTMLNYKFZSV-DZOUCCHMSA-N</inchikey>
  <state>Solid</state>
  <cellular_locations>
    <cellular_location>Cytosol</cellular_location>
    <cellular_location>Extra-organism</cellular_location>
    <cellular_location>Periplasm</cellular_location>
  </cellular_locations>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>-2.74</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>0.04</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>solubility</kind>
      <value>5.54e+02 g/l</value>
      <source>ALOGPS</source>
    </property>
  </predicted_properties>
  <experimental_properties>
  </experimental_properties>
  <property>
    <kind>logp</kind>
    <value>-6.5</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_acidic</kind>
    <value>11.22</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_basic</kind>
    <value>-3.6</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>iupac</kind>
    <value>(2R,3R,4S,5S,6R)-2-{[(2R,3S,4R,5R,6R)-4,5-dihydroxy-2-(hydroxymethyl)-6-{[(2R,3S,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy}oxan-3-yl]oxy}-6-(hydroxymethyl)oxane-3,4,5-triol</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>average_mass</kind>
    <value>504.4371</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>mono_mass</kind>
    <value>504.169034976</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>smiles</kind>
    <value>OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@@H](O[C@H]3[C@H](O)[C@@H](O)C(O)O[C@@H]3CO)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formula</kind>
    <value>C18H32O16</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchi</kind>
    <value>InChI=1S/C18H32O16/c19-1-4-7(22)8(23)12(27)17(31-4)34-15-6(3-21)32-18(13(28)10(15)25)33-14-5(2-20)30-16(29)11(26)9(14)24/h4-29H,1-3H2/t4-,5-,6-,7-,8+,9-,10-,11-,12-,13-,14-,15-,16?,17-,18-/m1/s1</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchikey</kind>
    <value>FYGDTMLNYKFZSV-DZOUCCHMSA-N</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polar_surface_area</kind>
    <value>268.68</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>refractivity</kind>
    <value>100.75</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polarizability</kind>
    <value>46.65</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>rotatable_bond_count</kind>
    <value>7</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>acceptor_count</kind>
    <value>16</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>donor_count</kind>
    <value>11</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>physiological_charge</kind>
    <value>0</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formal_charge</kind>
    <value>0</value>
    <source>ChemAxon</source>
  </property>
  <pathways>
    <pathway>
      <name>Starch and sucrose metabolism</name>
      <description>The metabolism of starch and sucrose begins with D-fructose interacting with a D-glucose in a reversible reaction through a maltodextrin glucosidase resulting in a water molecule and a sucrose. D-fructose is phosphorylated through an ATP driven fructokinase resulting in the release of an ADP, a hydrogen ion and a Beta-D-fructofuranose 6-phosphate. This compound can also be introduced into the cytoplasm through either a mannose PTS permease or a hexose-6-phosphate:phosphate antiporter. 
The Beta-D-fructofuranose 6-phosphate is isomerized through a phosphoglucose isomerase resulting in a Beta-D-glucose 6-phosphate. This compound can also be incorporated by glucose PTS permease or a hexose-6-phosphate:phosphate antiporter. 
The beta-D-glucose 6 phosphate can also be produced by a D-glucose being phosphorylated by an ATP-driven glucokinase resulting in a ADP, a hydrogen ion and a Beta-D-glucose 6 phosphate. 

The beta-D-glucose can produce alpha-D-glucose-1-phosphate  by two methods:
1.-Beta-D-glucose is isomerized into an alpha-D-Glucose 6-phosphate and then interacts in a reversible reaction through a phosphoglucomutase-1 resulting in a alpha-D-glucose-1-phosphate.
2.-Beta-D-glucose interacts with a putative beta-phosphoglucomutase resulting in a Beta-D-glucose 1-phosphate.  Beta-D-glucose 1-phosphate can be incorporated into the cytoplasm through a 
glucose PTS permease. This compound is then isomerized into a Alpha-D-glucose-1-phosphate
The beta-D-glucose can cycle back into a D-fructose by first interacting with D-fructose in a reversible reaction through a Polypeptide: predicted glucosyltransferase resulting in the release of a phosphate and a sucrose. The sucrose then interacts in a reversible reaction with a water molecule through a maltodextrin glucosidase resulting in a D-glucose and a D-fructose. 

Alpha-D-glucose-1-phosphate can produce glycogen in by two different sets of reactions:
1.-Alpha-D-glucose-1-phosphate interacts with a hydrogen ion and an ATP through a glucose-1-phosphate adenylyltransferase resulting in a pyrophosphate and an ADP-glucose. The ADP-glucose then interacts with an amylose through a glycogen synthase resulting in the release of an ADP and an Amylose. The amylose then interacts with 1,4-α-glucan branching enzyme resulting in glycogen
2.- Alpha-D-glucose-1-phosphate interacts with amylose through a maltodextrin phosphorylase resulting in a phosphate and a glycogen.

Alpha-D-glucose-1-phosphate can also interacts with UDP-galactose through a galactose-1-phosphate uridylyltransferase resulting in a galactose 1-phosphate and a Uridine diphosphate glucose. The UDP-glucose then interacts with an alpha-D-glucose 6-phosphate through a trehalose-6-phosphate synthase resulting in a uridine 5'-diphosphate, a hydrogen ion and a Trehalose 6- phosphate. The latter compound can also be incorporated into the cytoplasm through a trehalose PTS permease. Trehalose interacts with a water molecule through a trehalose-6-phosphate phosphatase resulting in the release of a phosphate and an alpha,alpha-trehalose.The alpha,alpha-trehalose can also be obtained from glycogen being metabolized through a glycogen debranching enzyme resulting in a the alpha, alpha-trehalose. This compound ca then be hydrated through a cytoplasmic trehalase resulting in the release of an alpha-D-glucose and a beta-d-glucose.

Glycogen is then metabolized by reacting with a phosphate through a glycogen phosphorylase resulting in a alpha-D-glucose-1-phosphate and a dextrin. The dextrin is then hydrated through a glycogen phosphorylase-limit dextrin α-1,6-glucohydrolase resulting in the release of a debranched limit dextrin and a maltotetraose. This compound can also be incorporated into the cytoplasm through a 
maltose ABC transporter. The maltotetraose interacts with a phosphate through a maltodextrin phosphorylase releasing a alpha-D-glucose-1-phosphate and a maltotriose. The maltotriose can also be incorporated through a maltose ABC transporter. The maltotriose can then interact with water through a maltodextrin glucosidase resulting in a D-glucose and a D-maltose. D-maltose can also be incorporated through a 
maltose ABC transporter 

The D-maltose can then interact with a maltotriose through a amylomaltase resulting in a maltotetraose and a D-glucose. The D-glucose is then phosphorylated through an ATP driven glucokinase resulting in a hydrogen ion, an ADP and a Beta-D-glucose 6-phosphate</description>
      <pathwhiz_id>PW000941</pathwhiz_id>
      <kegg_map_id>ec00500</kegg_map_id>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>Porphyrin and chlorophyll metabolism</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>ec00860</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>glycogen degradation I</name>
      <ecocyc_pathway_id>GLYCOCAT-PWY</ecocyc_pathway_id>
    </pathway>
  </pathways>
  <spectra>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>722</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>723</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>724</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>725</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>726</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>727</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>12583</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>31916</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>31917</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>37997</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168767</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168769</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168771</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168774</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168776</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168778</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168780</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168782</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168784</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168786</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168789</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168791</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168793</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168795</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>168798</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>1673</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87632</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87633</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87634</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87635</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87636</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87637</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87638</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87639</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87640</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87641</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87642</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87643</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87644</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87645</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87646</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87647</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87648</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87649</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87650</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>87651</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1494</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1495</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1496</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>5167</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>5168</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>293710</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>293711</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>293712</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>334234</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>334235</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>334236</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2226735</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2228010</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2229052</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2230382</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2231378</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2232848</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2233789</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2235136</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2255878</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2813576</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2813577</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2813578</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2891532</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2891533</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrTwoD</type>
      <spectrum_id>1614</spectrum_id>
    </spectrum>
  </spectra>
  <hmdb_id>HMDB01262</hmdb_id>
  <pubchem_compound_id>439586</pubchem_compound_id>
  <chemspider_id>388669</chemspider_id>
  <kegg_id>C01835</kegg_id>
  <chebi_id>27931</chebi_id>
  <biocyc_id>MALTOTRIOSE</biocyc_id>
  <het_id/>
  <wikipidia></wikipidia>
  <foodb_id></foodb_id>
  <general_references>
    <reference>
      <reference_text>Keseler, I. M., Collado-Vides, J., Santos-Zavaleta, A., Peralta-Gil, M., Gama-Castro, S., Muniz-Rascado, L., Bonavides-Martinez, C., Paley, S., Krummenacker, M., Altman, T., Kaipa, P., Spaulding, A., Pacheco, J., Latendresse, M., Fulcher, C., Sarker, M., Shearer, A. G., Mackie, A., Paulsen, I., Gunsalus, R. P., Karp, P. D. (2011). "EcoCyc: a comprehensive database of Escherichia coli biology." Nucleic Acids Res 39:D583-D590.</reference_text>
      <pubmed_id>21097882</pubmed_id>
    </reference>
    <reference>
      <reference_text>Kanehisa, M., Goto, S., Sato, Y., Furumichi, M., Tanabe, M. (2012). "KEGG for integration and interpretation of large-scale molecular data sets." Nucleic Acids Res 40:D109-D114.</reference_text>
      <pubmed_id>22080510</pubmed_id>
    </reference>
    <reference>
      <reference_text>van der Werf, M. J., Overkamp, K. M., Muilwijk, B., Coulier, L., Hankemeier, T. (2007). "Microbial metabolomics: toward a platform with full metabolome coverage." Anal Biochem 370:17-25.</reference_text>
      <pubmed_id>17765195</pubmed_id>
    </reference>
    <reference>
      <reference_text>Winder, C. L., Dunn, W. B., Schuler, S., Broadhurst, D., Jarvis, R., Stephens, G. M., Goodacre, R. (2008). "Global metabolic profiling of Escherichia coli cultures: an evaluation of methods for quenching and extraction of intracellular metabolites." Anal Chem 80:2939-2948.</reference_text>
      <pubmed_id>18331064</pubmed_id>
    </reference>
    <reference>
      <reference_text>Sreekumar A, Poisson LM, Rajendiran TM, Khan AP, Cao Q, Yu J, Laxman B, Mehra R, Lonigro RJ, Li Y, Nyati MK, Ahsan A, Kalyana-Sundaram S, Han B, Cao X, Byun J, Omenn GS, Ghosh D, Pennathur S, Alexander DC, Berger A, Shuster JR, Wei JT, Varambally S, Beecher C, Chinnaiyan AM: Metabolomic profiles delineate potential role for sarcosine in prostate cancer progression. Nature. 2009 Feb 12;457(7231):910-4.</reference_text>
      <pubmed_id>19212411</pubmed_id>
    </reference>
    <reference>
      <reference_text>Lingstrom P, Birkhed D, Granfeldt Y, Bjorck I: pH measurements of human dental plaque after consumption of starchy foods using the microtouch and the sampling method. Caries Res. 1993;27(5):394-401.</reference_text>
      <pubmed_id>8242677</pubmed_id>
    </reference>
    <reference>
      <reference_text>Yuge O, Morio M, Fukui T, Fujii K, Kikuchi H, Takahashi S: Maltotriose and maltotetraose excreted in urine following intravenous administration of maltose to human volunteers. Jpn J Surg. 1983 Jul;13(4):296-303.</reference_text>
      <pubmed_id>6645121</pubmed_id>
    </reference>
  </general_references>
  <synthesis_reference></synthesis_reference>
  <msds_url>http://hmdb.ca/system/metabolites/msds/000/001/130/original/HMDB01262.pdf?1358461768</msds_url>
  <enzymes>
    <enzyme>
      <name>Maltodextrin phosphorylase</name>
      <uniprot_id>P00490</uniprot_id>
      <uniprot_name>PHSM_ECOLI</uniprot_name>
      <gene_name>malP</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P00490.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>4-alpha-glucanotransferase</name>
      <uniprot_id>P15977</uniprot_id>
      <uniprot_name>MALQ_ECOLI</uniprot_name>
      <gene_name>malQ</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P15977.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Maltodextrin glucosidase</name>
      <uniprot_id>P21517</uniprot_id>
      <uniprot_name>MALZ_ECOLI</uniprot_name>
      <gene_name>malZ</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P21517.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Maltose/maltodextrin import ATP-binding protein MalK</name>
      <uniprot_id>P68187</uniprot_id>
      <uniprot_name>MALK_ECOLI</uniprot_name>
      <gene_name>malK</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P68187.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Maltose transport system permease protein malF</name>
      <uniprot_id>P02916</uniprot_id>
      <uniprot_name>MALF_ECOLI</uniprot_name>
      <gene_name>malF</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P02916.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Maltose transport system permease protein malG</name>
      <uniprot_id>P68183</uniprot_id>
      <uniprot_name>MALG_ECOLI</uniprot_name>
      <gene_name>malG</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P68183.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Maltose-binding periplasmic protein</name>
      <uniprot_id>P0AEX9</uniprot_id>
      <uniprot_name>MALE_ECOLI</uniprot_name>
      <gene_name>malE</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0AEX9.xml</protein_url>
    </enzyme>
  </enzymes>
  <transporters>
    <enzyme>
      <name>Maltose/maltodextrin import ATP-binding protein MalK</name>
      <uniprot_id>P68187</uniprot_id>
      <uniprot_name>MALK_ECOLI</uniprot_name>
      <gene_name>malK</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P68187.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Maltose transport system permease protein malF</name>
      <uniprot_id>P02916</uniprot_id>
      <uniprot_name>MALF_ECOLI</uniprot_name>
      <gene_name>malF</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P02916.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Maltose transport system permease protein malG</name>
      <uniprot_id>P68183</uniprot_id>
      <uniprot_name>MALG_ECOLI</uniprot_name>
      <gene_name>malG</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P68183.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Maltose-binding periplasmic protein</name>
      <uniprot_id>P0AEX9</uniprot_id>
      <uniprot_name>MALE_ECOLI</uniprot_name>
      <gene_name>malE</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0AEX9.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Maltoporin</name>
      <uniprot_id>P02943</uniprot_id>
      <uniprot_name>LAMB_ECOLI</uniprot_name>
      <gene_name>lamB</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P02943.xml</protein_url>
    </enzyme>
  </transporters>
  <reactions>
    <reaction_text>Adenosine triphosphate + Water + Maltotriose &gt; ADP + Hydrogen ion + Maltotriose + Phosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>TRANS-RXN0-503</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + Water + Maltotriose &gt; ADP + Hydrogen ion + Maltotriose + Phosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>TRANS-RXN0-503</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Water + Maltotriose &gt; D-Glucose + D-Maltose</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>RXN0-5183</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Water + Maltotetraose &gt; D-Glucose + Maltotriose</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>D-Maltose + Maltotriose &gt; D-Glucose + Maltotetraose</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Maltotriose + D-Maltose &lt;&gt; Maltotetraose + b-D-Glucose</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>AMYLOMALT-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Maltotetraose + Phosphate &lt;&gt; Maltotriose + Glucose 1-phosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>RXN0-5182</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Maltotriose + Water &gt; D-Maltose + D-Glucose</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>RXN0-5183</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Maltotriose + Adenosine triphosphate + Water &gt; ADP + Phosphate + Maltotriose + Hydrogen ion</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>TRANS-RXN0-503</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Maltotriose + Adenosine triphosphate + Water &gt; ADP + Phosphate + Maltotriose + Hydrogen ion</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>TRANS-RXN0-503</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Maltotetraose + Phosphate &gt; Maltotriose + Alpha-D-glucose 1-phosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R003522</pw_reaction_id>
    <reaction_text>Maltotriose + Adenosine triphosphate + Water &gt; Adenosine diphosphate + Phosphate + Hydrogen ion + Maltotriose + ADP</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_RCT000155</pw_reaction_id>
    <reaction_text>Maltotriose + Adenosine triphosphate + Water &gt; Adenosine diphosphate + Phosphate + Hydrogen ion + Maltotriose + ADP</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_RCT000155</pw_reaction_id>
  </reactions>
  <concentrations>
  </concentrations>
</compound>
