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1. (CSDB ID: 5240) | report error |
| a-D-Glcp-(1-3)-+ a-D-Glcp-(1-4)-+ | | a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp-(1-3)-a-D-Glcp-(1-2)-L-GroA | Show graphically |
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Mycobacterium xenopi CIPT 140 35004
(Ancestor NCBI TaxID 1789,
species name lookup)
]The structures of methylglucose-containing polysaccharides (MeGlc PS) from Mycobacterium xenopi were investigated using high-pH anion-exchange chromatography and liquid secondary-ion mass spectrometry. We report the structure of two novel MeGlc PS, referred to as A and B. MeGlc PS A is composed of 16 D-glucopyranose residues, 11 of which are methylated, and MeGlc PS B contains 15 D-glucopyranose residues, 10 of which are methylated. The main structural feature of both MeGlc PS A and B, compared to the previously described structures, is the absence of the tetrasaccharide non-reducing end 3-O-Me-D-Glcp-[α(1→4)-D-Glcp]3. The MeGlc PS A structure is similar to the synthetic polysaccharide [Saier, M. H. & Ballou, C. E. (1968) J. Biol. Chem. 243, 992-1005], having a lower affinity for fatty acids than the MeGlc PS of Mycobacterium smegmatis [Kiho, T. & Ballou, C. E. (1988) Biochemistry 27, 5824-5828]. Thus, the occurrence of MeGlc PS A and the consequences on the regulation of fatty acid synthetase I activity involved in the biosynthesis of fatty acids, precursors of mycolic acid biosynthesis, is discussed.
mass spectrometry, Mycobacterium, polymethylglucose polysaccharide, high-pH anion-exchange chromatography, fatty acid complex
Structure type: oligomer|
2. (CSDB ID: 5335) | report error |
| a-D-Glcp-(1-3)-+ a-D-Glcp-(1-4)-+ | | a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp6Me-(1-4)-a-D-Glcp-(1-3)-a-D-Glcp-(1-2)-L-GroA | Show graphically |
|
Show legend Show as text |
Mycobacterium xenopi CIPT 140 35004
(Ancestor NCBI TaxID 1789,
species name lookup)
]The structures of methylglucose-containing polysaccharides (MeGlc PS) from Mycobacterium xenopi were investigated using high-pH anion-exchange chromatography and liquid secondary-ion mass spectrometry. We report the structure of two novel MeGlc PS, referred to as A and B. MeGlc PS A is composed of 16 D-glucopyranose residues, 11 of which are methylated, and MeGlc PS B contains 15 D-glucopyranose residues, 10 of which are methylated. The main structural feature of both MeGlc PS A and B, compared to the previously described structures, is the absence of the tetrasaccharide non-reducing end 3-O-Me-D-Glcp-[α(1→4)-D-Glcp]3. The MeGlc PS A structure is similar to the synthetic polysaccharide [Saier, M. H. & Ballou, C. E. (1968) J. Biol. Chem. 243, 992-1005], having a lower affinity for fatty acids than the MeGlc PS of Mycobacterium smegmatis [Kiho, T. & Ballou, C. E. (1988) Biochemistry 27, 5824-5828]. Thus, the occurrence of MeGlc PS A and the consequences on the regulation of fatty acid synthetase I activity involved in the biosynthesis of fatty acids, precursors of mycolic acid biosynthesis, is discussed.
mass spectrometry, Mycobacterium, polymethylglucose polysaccharide, high-pH anion-exchange chromatography, fatty acid complex
Structure type: oligomer| New query | Export IDs | Home | Help |
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