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13168-24-6 , Gal-a-1,3-Gal; a1-3Galactobiose , 3-O-(a-D-Galactopyranosyl)-D-galactopyranose

13168-24-6 , Gal-a-1,3-Gal; a1-3Galactobiose , 3-O-(a-D-Galactopyranosyl)-D-galactopyranose
C12H22O11 / 342.30
MFCD00797611

Gal-a-1,3-Gal; a1-3Galactobiose , 3-O-(a-D-Galactopyranosyl)-D-galactopyranose

A carbohydrate, commonly known as alpha gal, found in most mammalian cell membranes. It is not found in primates, including humans, whose immune systems recognize it as a foreign body and produce xenoreactive immunoglobulin M antibodies, leading to organ rejection after transplantation. Anti-α gal immunoglobulin G antibodies are some of the most common in humans. Regular stimulation from gut flora, typically initiated within the first six months of life, leads to an exceptionally high titre of around 1% of all circulating IgG. Recent studies are showing increasing evidence that this allergy may be induced by the bite of the lone star tick (Amblyomma americanum) in North America and the castor bean tick (Ixodes ricincus) in Sweden.

CAS Number13168-24-6
Product NameD-Galactose, 3-O-alpha-D-galactopyranosyl-
IUPAC Name(2R,3S,4S,5R)-2,4,5,6-tetrahydroxy-3-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyhexanal
Molecular FormulaC₁₂H₂₂O₁₁
Molecular Weight342.3 g/mol
InChIInChI=1S/C12H22O11/c13-1-4(16)7(18)11(5(17)2-14)23-12-10(21)9(20)8(19)6(3-15)22-12/h2,4-13,15-21H,1,3H2/t4-,5+,6-,7+,8+,9+,10-,11-,12-/m1/s1
InChI KeyYGEHCIVVZVBCLE-FSYGUOKUSA-N
SMILESC(C1C(C(C(C(O1)OC(C(C=O)O)C(C(CO)O)O)O)O)O)O
Synonyms3-O-alpha-D-galactosylgalactose, Gal alpha(1,3)Gal, Gal-1-3-Gal, Gal-alpha-1-3-Gal, galactose alpha 1-3 galactose, galactosyl-(1-3)galactose, galactosyl-(1-3)galactose, (beta-D)-isomer, galactosyl-alpha-(1-3)galactose, Galalpha(1,3)Gal, Galalpha1-3Gal
Canonical SMILESC(C1C(C(C(C(O1)OC(C(C=O)O)C(C(CO)O)O)O)O)O)O
Isomeric SMILESC([C@@H]1[C@@H]([C@@H]([C@H]([C@H](O1)O[C@H]([C@H](C=O)O)[C@H]([C@@H](CO)O)O)O)O)O)O


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