鸟分枝杆菌真菌蛋白C2结构

Biochimica et biophysica acta Pub Date : 1963-10-29 DOI:10.1016/0006-3002(63)91643-3

M Chaput , G Michel , E Lederer

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引用次数: 17

摘要

禽分枝杆菌C2是两种同源肽糖脂C2a(式III)和C2b(式IV)的混合物，两者都具有以下部分结构:d -丙氨酸的c端分子使真菌苷C2a中的6-脱氧- l- talose和真菌苷C2b中的3- o -甲基-6-脱氧- l- talose的假醛功能酯化。一个乙酰基与3,4-二- o -甲基鼠李糖相连，两个乙酰基与6-脱氧- l- talose和3- o -甲基-6-脱氧- l- talose相连。脂质部分是近似式C43H86O2±3 CH2或C46H90O3±3 CH2的酸(或酸的混合物)RCOOH，通过酰胺键与d -苯丙氨酸的氨基结合。

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Structure du mycoside C2 de Mycobacterium avium

Mycoside C₂ from Mycobacterium avium is a mixture of two homologous peptidoglycolipids: C_2a (Formula III) and C_2b (Formula IV). Both have the following partial structure:

The C-terminal molecule of D-alanine esterifies the pseudoaldehydic function of 6-deoxy-L-talose in mycoside C_2a and that of $3-O- methyl-6-deoxy- L -talose$ in mycoside C_2b. One acetyl group is linked to 3,4-di-O-methylrhamnose and two acetyl groups to 6-deoxy-L-talose and to $3-O- methyl-6-deoxy- L -talose$ .

the lipid moiety is an acid (or mixture of acids) RCOOH of approximate formula C₄₃H₈₆O₂ ± 3 CH₂, or C₄₆H₉₀O₃ ± 3 CH₂ bound by an amide linkage to the amino group of D-phenylalanine.

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Biochimica et biophysica acta

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