| antigen |
|
| CHEBI:59132 |
|
| Any substance that stimulates an immune response in the body, such as through antibody production or by presentation to a T-cell receptor after binding to a major histocompability complex (MHC). |
|
This entity has been manually annotated by the ChEBI Team.
|
|
|
| Members of
antigen Class |
Download as
Tab-delimited,
XML,
SDF
|
GPL-1
Mass :1339.77550
Formula :
C71H126N4O19
PIM6
Mass :1839.98180
Formula :
C81H147O43P
GPL-21
Mass :1604.00480
Formula :
C81H142N4O27
S. flexneri serotype 2a O-polysaccharide (O factor 9-positive)
Definition :
A polysaccharide derivative comprised of a [2 close- alpha- L-Rha pIII-(1 right2)- alpha- L-Rha pII-(1 right3)- alpha- L-Rha pI-(1 right3)- beta- D-Glc pNAc- open1 right] tetrasaccharide repeat modified by the (1 right4) linkage of an alpha- D-glucosyl group to the Rha I residue and by addition of acetyl groups to 60% of the O-6 positions of the GlcNAc residue and to either O-3 or O-4 of many of the Rha III residues (60% to O-3; 25% to O-4). The structure provided is representative of that in Shigella flexneri serotype 2a and shows the most common repeating unit.
S. flexneri serotype 5a O-polysaccharide (O factor 9-positive)
Definition :
A polysaccharide derivative comprised of a [2 close- alpha- L-Rha pIII-(1 right2)- alpha- L-Rha pII-(1 right3)- alpha- L-Rha pI-(1 right3)- beta- D-Glc pNAc- open1 right] tetrasaccharide repeat modified by the (1 right3) linkage of an alpha- D-glucosyl group to the Rha II residue and by addition of an acetyl group to either O-3 or O-4 of many of the Rha III residues (35% to O-3; 25% to O-4). The structure provided is representative of that in Shigella flexneri serotype 5a and shows the most common repeating unit.
S. flexneri serotype 6 O-polysaccharide (O factor 9-positive)
Definition :
A polysaccharide derivative comprised of a [2 close- alpha- L-Rha pIII-(1 right2)- alpha- L-Rha pII-(1 right3)- beta- D-Gal pA-(1 right3)- beta- D-Gal pNAc- open1 right] tetrasaccharide repeat modified by the addition of an acetyl group to either O-3 or O-4 of many of the Rha III residues (60% to O-3; 30% to O-4). The structure provided is representative of that in Shigella flexneri serotype 6 and shows the most common repeating unit.
S. flexneri serotype 2a O-polysaccharide (O factor 9-negative)
Definition :
A polysaccharide derivative comprised of a [2 close- alpha- L-Rha pIII-(1 right2)- alpha- L-Rha pII-(1 right3)- alpha- L-Rha pI-(1 right3)- beta- D-Glc pNAc- open1 right] tetrasaccharide repeat modified by the (1 right4) linkage of an alpha- D-glucosyl group to the Rha I residue and by addition of an acetyl group to 50% of the O-6 positions of the GlcNAc residue. The structure provided is representative of that in Shigella flexneri serotype 2a and shows the repeating unit containing the acetyl group on the GlcNAc residue.
S. flexneri serotype 5a O-polysaccharide (O factor 9-negative)
Definition :
A polysaccharide derivative comprised of a [2 close- alpha- L-Rha pIII-(1 right2)- alpha- L-Rha pII-(1 right3)- alpha- L-Rha pI-(1 right3)- beta- D-Glc pNAc- open1 right] tetrasaccharide repeat modified by the (1 right3) linkage of an alpha- D-glucosyl group to the Rha II residue.
glucuronoxylomannan
Definition :
A linear (1 right3)-linked mannan polysaccharide derivative substituted at the 2- O-positions by single residues of either xylose or glucuronic acid.
GPL C-II
Mass :1235.62800
Formula :
C66H114N4O17
GPL P-I
Mass :1339.77550
Formula :
C71H126N4O19
GPL P-IV
Mass :1245.64400
Formula :
C63H112N4O18S
GPL P-II
Mass :1325.74900
Formula :
C70H124N4O19
P. stuartii O4 O-specific polysaccharide
Definition :
A polysaccharide-derived antigen from Providencia stuartii composed of a backbone of branched tetrasaccharide repeating units comprised of alternating beta- D-galactose and N-acetylglucosamine residues joined to each other via beta-(1 right3)- or -(1 right6)-linkages, with an N-acetyl- L-asparaginyl- alpha- D-quinovosyl side-chain attached by a (1 right6)-linkage to one of the galactosyl residues.
colanic acid
Definition :
A polyanionic heteropolysaccharide containing a repeat unit with D-glucose, L-fucose, D-galactose, and D-glucuronic acid sugars that are non-stoichiometrically decorated with O-acetyl and pyruvate side-chains
fluorescein isothiocyanate
Definition :
An oxaspiro compound that is an isothiocyanato derivative of fluorescein. It exists as two isomers, with the isothiocyanato group located at either the 5- or 6-position.
K antigen
Definition :
Any capsular polysaccharide derivative which is carried on the surface of a bacterial capsule or formed on the outer portion of a cell wall and masks somatic O antigens.
enterobacterial common antigen
Definition :
An acidic polysaccharide containing N-acetyl-D-glucosamine, N-acetyl-D-mannosaminouronic acid, and 4-acetamido-4,6-dideoxy-D-galactose. A major component of the cell wall outer membrane of Gram-negative bacteria.
DDM-838
Mass :838.12710
Formula :
C47H75N5O8
[3)-alpha-D-Fucp-(1->2)-beta-L-Rhap-(1->]n
Definition :
A polysaccharide composed of a backbone of alpha- D-fucosyl (1 right2)- beta- L-rhamnosyl repeating units that are joined to each other via (1 right3)-linkages.
d(Gs)19dG
Mass :6923.44600
Formula :
C200H242N100O101P20S20
S. flexneri serotype 1a O-polysaccharide (O factor 9-positive)
Definition :
A polysaccharide derivative comprised of a [2 close- alpha- L-Rha pIII-(1 right2)- alpha- L-Rha pII-(1 right3)- alpha- L-Rha pI-(1 right3)- beta- D-Glc pNAc- open1 right] tetrasaccharide repeat modified by the (1 right4) linkage of an alpha- D-glucosyl group to the GlcNAc residue and by addition of an acetyl group to either O-3 or O-4 of many of the Rha III residues (65% to O-3; 25% to O-4). The structure provided is representative of that in Shigella flexneri serotype 1a and shows the most common repeating unit.
S. flexneri serotype 1b O-polysaccharide (O factor 9-positive)
Definition :
A polysaccharide derivative comprised of a [2 close- alpha- L-Rha pIII-(1 right2)- alpha- L-Rha pII-(1 right3)- alpha- L-Rha pI-(1 right3)- beta- D-Glc pNAc- open1 right] tetrasaccharide repeat modified by the (1 right4) linkage of an alpha- D-glucosyl group to the GlcNAc residue and by addition of acetyl groups to O-2 of 80% of the Rha I residues and to either O-3 or O-4 of many of the Rha III residues (70% to O-3; 15% to O-4). The structure provided is representative of that in Shigella flexneri serotype 1b and shows the most common repeating unit.
lipoarabinomannan
Definition :
A glycolipid comprising a glycosylphosphatidyl-myo-inositol-anchored lipoglycan; a virulence factor associated with Mycobacterium tuberculosis.
P. mirabilis O11 O-specific polysaccharide
Definition :
A polysaccharide derivative consisting of a repeating unit of beta- D-glucuronosyl, beta- D-galacturonosyl and N-acetyl- beta- D-glucosaminyl residues linked sequentially (1 right3) and (1 right3), to the glucuronosyl and N-acetylglucosaminyl residues of which are linked respectively (1 right2) and (1 right6) an N-acetyl- beta- D-glucosaminyl residue and an alpha- D-glucosyl residue, while the galacturonosyl residue forms an amide with L-threonine, the complete pentasaccharide repeating units all being linked (1 right4). The O-polysaccharide of Proteus mirabilis O11.
P. mirabilis 9B-m O-specific polysaccharide
Definition :
A polysaccharide derivative consisting of a repeating unit of beta- D-glucuronosyl, beta- D-galacturonosyl and N-acetyl- beta- D-glucosaminyl residues linked sequentially (1 right3) and (1 right3), to the glucuronosyl residue of which is linked (1 right2) an N-acetyl- beta- D-glucosaminyl residue, while the galacturonosyl residue forms an amide with L-threonine, the complete tetrasaccharide repeating units all being linked (1 right4). The O-polysaccharide of Proteus mirabilis 9B-m.
Proteus genomospecies 3J-r O-specific polysaccharide
Definition :
A polysaccharide derivative consisting of a repeating unit of beta- D-glucuronosyl, beta- D-galacturonosyl and N-acetyl- beta- D-glucosaminyl residues linked sequentially (1 right3) and (1 right3), to the glucuronosyl and N-acetylglucosaminyl residues of which are linked respectively (1 right2) and (1 right6) an N-acetyl- beta- D-glucosaminyl residue and an alpha- D-glucosyl residue, while the galacturonosyl residue forms an amide with 3- O-acetyl- L-threonine, the complete pentasaccharide repeating units all being linked (1 right4). The O-polysaccharide of Proteus genomospecies 3J-r.
GPL-25
Mass :1877.28710
Formula :
C93H161N5O33
P. mirabilis O29 O-specific polysaccharide
Definition :
A polysaccharide-derived antigen composed of a backbone of branched tetrasaccharide-derivative repeating units that are joined to each other via beta-(1 right3)-linkages.
E. coli 180/C3 O-specific polysaccharide
Definition :
A polysaccharide-derived antigen composed of a backbone of linear tetrasaccharide-derivative repeating units that are joined to each other via alpha-(1 right2)-linkages.
E. coli O5:K4:H4 O-specific polysaccharide
Definition :
A polysaccharide-derived antigen composed of a backbone of linear tetrasaccharide-derivative repeating units that are joined to each other via alpha-(1 right4)-linkages.
E. coli O65:K-:H- O-specific polysaccharide
Definition :
A polysaccharide-derived antigen composed of a backbone of linear pentasaccharide-derivative repeating units that are joined to each other via alpha-(1 right2)-linkages.
P. mirabilis O6 O-specific polysaccharide
Definition :
A polysaccharide derivative that is the capsular polysaccharide of Proteus mirabilis 06, strain ATCC 49565, consisting of a backbone of repeating derivatised-trisaccharide units.
Brucella sp. O-PS M-antigen
Definition :
A polysaccharide-derived antigen composed of a backbone of penta-(4,6-dideoxy-4-formamido- D-mannopyranose) repeating units that are joined to each other via alpha-(1 right2)-linkages.
GPL-26
Mass :1850.26180
Formula :
C92H160N4O33
GPL-8
Mass :1585.98950
Formula :
C81H140N4O26
GPL-4
Mass :1660.11110
Formula :
C85H150N4O27
GPL-9I
Mass :1906.32510
Formula :
C95H164N4O34
S. flexneri serotype X O-specific polysaccharide
Definition :
A polysaccharide derivative antigen composed of a backbone of repeating alpha- D-Glc-(1 right3)- alpha- L-Rha-(1 right2)- alpha- L-Rha-(1 right3)- alpha- L-Rha-(1 right3)- beta- D-GlcNAc units that are connected via beta-(1 right2)-linkages between the GlcNAc and the Rha residue adjacent to Glc.
S. flexneri serotype 5b O-specific polysaccharide
Definition :
A polysaccharide derivative antigen composed of a backbone of repeating alpha- D-Glc-(1 right3)- alpha- L-Rha-(1 right2)-[ alpha- D-Glc-(1 right3)]- alpha- L-Rha-(1 right3)- alpha- L-Rha-(1 right3)- beta- D-GlcNAc units that are connected via beta-(1 right2)-linkages between the GlcNAc and the Rha residue adjacent to the first Glc.
S. flexneri serotype 3a O-specific polysaccharide
Definition :
A polysaccharide derivative antigen composed of a backbone of repeating alpha- D-Glc-(1 right3)- alpha- L-Rha-(1 right2)- alpha- L-Rha-(1 right3)-2- O-Ac- alpha- L-Rha-(1 right3)- beta- D-GlcNAc units that are connected via beta-(1 right2)-linkages between the GlcNAc and the Rha residue adjacent to Glc.
|
|
