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                SDAP 2.0 - Structural Database of Allergenic Proteins
Go to: SDAP All allergens       Go to: SDAP Food allergens
Send a comment to Werner Braun      Submit new allergen information to SDAP
Alphabetical listing of allergens: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Access to SDAP is available free of charge for Academic and non-profit use.< Licenses for commercial use can be obtained by contacting W. Braun ( Secure access to SDAP is available from

Allergen Info Description
Allergen ID 2
Allergen Scientific Name Amb a 2
Allergen Species - Systematic Name Ambrosia artemisiifolia
Allergen Species - Common Name short ragweed
Allergen Common source weed
Allergen Common name Asterales
Allergen Keywords antigen K
Allergen IUIS (Yes=1, No=0) 1
ID Allergen Name
Amb a 2 - References
ID Reference
Pubmed ID: 1809687
Griffith IJ, Pollock J, Klapper DG, Rogers BL, Nault AK, Sequence polymorphism of Amb a I and Amb a II, the major allergens in Ambrosia artemisiifolia (short ragweed). Int Arch Allergy Appl Immunol. 1991;96(4):296-304.
Pubmed ID: 1717566
Rogers BL, Morgenstern JP, Griffith IJ, Yu XB, Counsell CM, Brauer AW, King TP, Garman RD, Kuo MC, Complete sequence of the allergen Amb alpha II. Recombinant expression and reactivity with T cells from ragweed allergic patients. J Immunol. 1991 Oct 15;147(8):2547-52.
Pubmed ID: 8366858
Kuo MC, Zhu XJ, Koury R, Griffith IJ, Klapper DG, Bond JF, Rogers BL, Purification and immunochemical characterization of recombinant and native ragweed allergen Amb a II. Mol Immunol. 1993 Aug;30(12):1077-87.
Amb a 2 - Protein Sequences
Source Link to source
SwissProt P27762
Amb a 2 - Theoretical Model Structure
Model ID PDB file PDB Snapshot PDB Snapshot 90 PDB Snapshot 180 PDB Snapshot 270 3D PDB View
19 GetModel Model Pic Model Pic Model Pic Model Pic Click here
Amb a 2 - Sequence Search :
Sequence Header Sequence
Amb a 2
SDAP Sequence ID: 19
SDAP Allergen ID: 2
View 3D Structure Click here to view 3D model structure of allergen
Fasta Search in SDAP
Blast Swissprot database search at NCBI
Blast PDB database search at NCBI
Blast NR database search at NCBI
Amb a 2 - Statistics from Alphafold ( SI is sequence id, Best template format: PDB_ChainID)
Allergen Name pLDDT Score pTM Score Best PDB template %Seq ID Align length Seq length Query Range Sequence Range E-Value Bit Score Download Model
Amb a 2 91.65 0.87 1PXZ_A 48.127 347 397 49 - 390 2 - 346 0 305 Download (SI: 19)
Amb a 2 - Alphafold Theoretical Model Structure
Model Structure

Coverage Plddt
Amb a 2 - Protein Sequence Properties!
Protein Sequence Protease cleavage sites PeptideCutter at ExPASy
P27762 Click here to process the data
Amb a 2 - PFAM Information
SeqID Aller ID AlnS AlnE EnvS EnvE PFAM ID Family Type Clan Description
19 2 130 313 127 313 PF00544 Pectate_lyase_4 Repeat CL0268 Pectate lyase
Where: AlnS= Alignment start position, AlnE= Alignment end position, EnvS= Envelope start position, EnvE= Envelope end position.

List of B-cell epitopes predicted by BepiPred method using a window size of 9 amino acids

Cleck here for epitopes predicted by BepiPred method
Amb a 2 - Epitope Information from published data
No. Position Epitope Sequence Epitope Type View epitope Search epitope in SDAP PD search in SDAP Cross-React search
No epitope information found!
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