Rapidly released allergens from short ragweed pollen. II. Identification and partial purification

Rabia Hussain, Philip S. Norman, David G. Marsh

Research output: Contribution to journalArticlepeer-review


We have identified several basic allergens in 16-min extracts of short ragweed (Ambrosia elatior) pollen and obtained a partially purified fraction (G50 II) using a combination of ion-exchange (CM-Sephadex C25) and gel-filtration (Biogel P30 and Sephadex G50) procedures. G50 II was allergenically and antigenically distinct from known allergens antigen E, Ra3, and Ra5. It gave a highly symmetrical peak on Sephadex G50 (fine), corresponding to a molecular weight of 11,500 daltons, and a single band on SDS polyacrylamide gel electrophoresis under both reducing and nonreducing conditions. However, two cathodic antigens were detectable by both agarose electrophoresis and crossed immunoelectrophoresis. Allergenic activity of G50 II, assessed by puncture testing in ragweed-sensitive subjects, showed a characteristic pattern of response independent of patient response to AgE, Ra3, and Ra5. The major antigenic and allergenic component of G50 II is designated Ra6.

Original languageEnglish (US)
Pages (from-to)217-222
Number of pages6
JournalThe Journal of allergy and clinical immunology
Issue number3
StatePublished - Mar 1981
Externally publishedYes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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