PMID- 10225885 OWN - NLM STAT- MEDLINE DCOM- 19990518 LR - 20200724 IS - 0019-9567 (Print) IS - 1098-5522 (Electronic) IS - 0019-9567 (Linking) VI - 67 IP - 5 DP - 1999 May TI - Conformational and linear B-cell epitopes of Asp f 2, a major allergen of Aspergillus fumigatus, bind differently to immunoglobulin E antibody in the sera of allergic bronchopulmonary aspergillosis patients. PG - 2284-91 AB - Asp f 2 is a major Aspergillus fumigatus allergen involved in allergic bronchopulmonary aspergillosis. Knowledge of the B-cell epitopes may contribute to the understanding of immunoregulation and immunodiagnosis. To elucidate the immunoglobulin E (IgE) binding epitopes in the linear sequence of Asp f 2, we synthesized decamer peptides spanning the whole molecule of Asp f 2 on derivatized cellulose membranes and evaluated IgE binding in ABPA patient and control sera. Peptides three to five amino acids long were synthesized based on amino acid sequences within the IgE binding regions and evaluated for the specificity of epitope antibody interactions. Nine IgE binding regions were recognized in this protein of 268 amino acid residues. Of the nine epitopes, seven (ATQRRQI, RKYFG, HWR, YTTRR, DHFAD, ALEAYA, and THEGGQ) are present in the hydrophilic regions of Asp f 2. Immunologic evaluation of the three recombinant fragments, Asp f 2A encompassing the N-terminal epitope region, Asp f 2B without N- and C-terminal regions of the protein, and Asp f 2C representing C-terminal epitopes, revealed that either the N- or C-terminal region of the protein is essential for the correct folding and conformation for IgE antibody binding. FAU - Banerjee, B AU - Banerjee B AD - Department of Medicine, Allergy-Immunology Division, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA. FAU - Greenberger, P A AU - Greenberger PA FAU - Fink, J N AU - Fink JN FAU - Kurup, V P AU - Kurup VP LA - eng GR - AI42349/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Infect Immun JT - Infection and immunity JID - 0246127 RN - 0 (Allergens) RN - 0 (Antibodies, Fungal) RN - 0 (Antigens, Fungal) RN - 0 (DNA Primers) RN - 0 (Epitopes) RN - 0 (Fungal Proteins) RN - 0 (allergen Asp f 2, Aspergillus fumigatus) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Allergens/*chemistry/genetics MH - Amino Acid Sequence MH - Antibodies, Fungal/blood MH - Antibody Specificity MH - Antigens, Fungal/*chemistry/genetics MH - Aspergillosis, Allergic Bronchopulmonary/*immunology MH - Aspergillus fumigatus/genetics/*immunology MH - B-Lymphocytes/*immunology MH - Base Sequence MH - Case-Control Studies MH - DNA Primers/genetics MH - Epitopes/chemistry/genetics MH - Fungal Proteins/*chemistry/genetics/*immunology MH - Humans MH - Immunoglobulin E/blood MH - Molecular Sequence Data MH - Protein Conformation PMC - PMC115968 EDAT- 1999/05/04 00:00 MHDA- 1999/05/04 00:01 PMCR- 1999/05/01 CRDT- 1999/05/04 00:00 PHST- 1999/05/04 00:00 [pubmed] PHST- 1999/05/04 00:01 [medline] PHST- 1999/05/04 00:00 [entrez] PHST- 1999/05/01 00:00 [pmc-release] AID - 0030 [pii] AID - 10.1128/IAI.67.5.2284-2291.1999 [doi] PST - ppublish SO - Infect Immun. 1999 May;67(5):2284-91. doi: 10.1128/IAI.67.5.2284-2291.1999.