PolysacDB Capsular polysaccharide 1499

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Contents 1 Carbohydrate Name 2 Carbohydrate Class 3 Source Microbe 4 Basic Structure 5 Proposed functions 6 Antigenic Nature used to produce antibodies 7 Carrier Name 8 Conjugation Method 9 Antibodies 10 Antibody type and class 11 Assay System 12 Cross-reactivity 13 Proposed epitopes 14 Proposed Utility 15 Weblink 16 External Links

Carbohydrate Name

Capsular polysaccharide

Carbohydrate Class

Capsular polysaccharide

Source Microbe

Cryptococcus neoformans Serotype A [strain 24064]

Basic Structure

The major component of C. neoformans capsular polysaccharide is glucurunoxylomannan [GXM] consisting of an unbranched mannose backbone substituted with xylose, glucuronic acid and O-acetyl residues

Proposed functions

C. neoformans has a large polysaccharide capsule that is a determinant of virulence. The capsular polysaccharide causes immunologic paralysis and inhibits phagocytosis by macrophages. Soluble C. neoformans capsular polysaccharide enhances human immunodeficiency virus [HIV] infection in cultured cells, suggesting a new pathogenic role in AIDS

Antigenic Nature used to produce antibodies

Whole cells

Carrier Name

nil

Conjugation Method

nil

Antibodies

Mab 1E10

Antibody type and class

IgM

Assay System

ELISA

Cross-reactivity

This antibody reacted with 2 serotype A strains 24064 and 371

Proposed epitopes

This Mab did not bind to de-O-acetylated GXM from both serotype A strains. This shows that acetylated residues form an important part of the epitope

Proposed Utility

N/A

Weblink

PubMed

External Links

• Link to PolysacDB database