Isolation and Characterization of Allergens from Ragweed Pollen. II

T. P. King, P. S. Norman, J. T. Connell

Research output: Contribution to journalArticlepeer-review

167 Scopus citations


The predominant allergen from ragweed pollen has been characterized as a protein of 37,800 molecular weight by physicochemical and immunochemical procedures. The active protein constitutes about 6% of the proteins in the pollen extract and it has been designated as antigen E. Antigen E can be isolated in four chemical forms. These forms have identical molecular weights and amino acid compositions but they differ in their charges. On removal of antigen E from pollen extract by precipitation with specific rabbit antiserum, a 40-fold decrease of the allergenic activity was observed by direct skin tests of the supernatant on eight sensitive patients. The finding suggests that antigen E represents at least 90 % of the allergenic activity in ragweed pollen.

Original languageEnglish (US)
Pages (from-to)458-468
Number of pages11
Issue number3
StatePublished - Mar 1 1964
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry


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