|Help page of Allergome|
The allergenic molecule section (BLU section) of the Allergome Database is
currently up-to-date. In this section as well as in the RED section some
data from earlier publications ( < 1987) have not been processed yet.
References cited in the GREEN section are up-to-date, but start with 2005.
This page has been updated on December 1, 2005.
Allergome - A Database of Allergenic Molecules
The Allergome Database has been designed to be as accessible as possible even to people that are not experienced with database search.
Allows you to access the following pages of the web site: About this site Help Links Allergens ReTiME
About this site
Supplies general information about the Allergome web site. It is updated any time relevant modifications in the basic structure or scientific criteria incurred the Allergome Database.
You are now in this page.
Contains a continuously updated useful list of links to events, scientific association, and journals.
Represent the main entrance to the core of the Allergome database.
Registration The access to the Allergome web site is free, but a registration is required for statistical purposes. If you are a "New User" you have to register yourself first. You have to fill in few fields with information about your interest related to the Allergome web site, and you have to choose a Username (max 16 characters) and a Password (max 16 characters). You may add your e-mail address to receive the monthly issue of the Allergome e-Newsletter. If you already receive the Allergome e-Newsletter skip this step. Once registered you may access the Allergome any time you want just by entry your Username and Password. Save them in a file to avoid multiple registrations.
The Allergome search engine will lead you to the Allergenic Molecule Monographs in three steps.
1 - Allergenic Molecule Search Form
In the Search page you put your query to the Allergome database.
The Allergenic Molecules in the Allergome Database are located in different sections:
If no selection is done the search will be carried out on the whole Allergome Database.
If the "No Allergenic Sources" checkbox is selected, allergenic sources in the RED and GREEN sections are excluded.
If the "Only IUIS Official Nomenclature Allergens" checkbox is selected only officially named allergenic molecules will be retrieved.
If the "No Isoforms" checkbox is selected monographs dealing with isoforms will be excluded.
Any search is performed using Taxonomy and English source archives. You may add another language by selecting among those available in the pop-down menu. In the case you add an in-language archive you may use special alphabetic characters from a non-international keyboards.
You have two types of Search:
You may enter one or more words ("string of characters"). The Search engine will retrieve monographs, which contain all the words you are searching for (i.e. "pollen birch" will list all the monographs containing both the words). You may use the "Substring" option that allows you to search the sequence of characters within all the Allergome Database (i.e. "ant" will retrieve both "plants" and "ants").
A quick search field is available in each Allergome page.
Differing from the Quick search, the words you enter in the Advanced Search fields are considered as a single string of character (i.e. "Dermatophagoides farinae" does not retrieve allergens of the "Dermatophagoides pteronyssinus" species).
You may carry out your Advanced search on "All" the archives of the Allergome Database (default choice in the Select-a-field pop-down menu). This search may be slower, but searches for the text you enter in any part of the Allergome Database.
You may select a specific archive if you know that the term you are searching for is in that archive (e.g. term "Pollen" in the "Tissues" archive).
Data in the "Accession Numbers" section of the Allergen Monograph are not searchable (you can not search for an allergen using an already known accession number). Data in the "References" section of the Allergen Monograph are not searchable (you can not search for an author's name).
If you want to exclude the Allergen Monographs containing your text simply click on the "NOT" checkbox (e.g. text "Mites" + NOT will retrieve all the Allergen Monographs excluding those containing Allergens from Mites).
If you want to combine terms to refine your search you may enter text in the three fields. The two logical operators "AND" and "OR" will associate or sum your terms. (e.g. "Bet v" AND "Profilin" will retrieve all the Allergenic Molecules containing both terms, whereas "Bet v" or "Profilin" will retrieve all the Allergenic Molecules containing either "Bet v" or "Profilin").
You then enter the text.
The search is not case sensitive.
You may enter letters, signs, number and combination of them.
You may access the "New Allergenic Molecules" added to the BLUE section of the Allergome database by selecting number of weeks of your interest and clicking the BLUE arrow on the right end of the first line.
You may access the "Modified Allergenic Molecules" in the BLUE section of the Allergome database by selecting number of weeks of your interest and clicking the BLUE arrow on the right end of the second line.
You may list all the Allergenic Molecules in the BLUE section of the Allergome database by clicking the BLUE arrow on the right end of the third line.
You may access the "New Allergenic Sources without identified allergenic molecules" added to the RED section of the Allergome database by clicking the RED arrow on the right end of the fourth line.
You may access the "New Allergenic Sources having identified allergenic molecules" added to the GREEN section of the Allergome database by clicking the GREEN arrow on the right end of the fifth line.
You may list all the modified Allergenic Sources in the RED and GREEN sections of the Allergome database by clicking the RED/GREEN arrow on the right end of the sixth line.
You may list all the Allergenic Sources in the RED and GREEN sections of the Allergome database by clicking the RED/GREEN arrow on the right end of the seventh line.
Do not enter in a single text field of the ADVANCED Search form a combination of words like "birch pollen" or "mite proteases". Combined Search must be performed using the QUICK search or the three text fields and the logical operators.
Use simple words and refine the Search after scrolling the list of the search results. The shorter is the string of character you use the longer will be the retrieved list.
If you don't remember the exact term use the QUICK search with the substring option.
The searching engine is not case sensitive.
2 - Allergenic Molecule Found
If no Allergenic Molecules are retrieved using your terms the following message appears:
"No Allergenic Molecules Available in the Allergome Database using [ your term ] "
If you used one of the filter checkboxes the Allergome database could return the following message:
"You can Obtain Information without the Current Selections"
If you go back to the Search Form and remove the checkbox selection you will retrieve information from the previously excluded Allergome sections.
If you add the search in one of the available language archive the Allergome Database could return the following message:
"If you are doing a search using a term in your own language that is not present in the Allergome database, send us an e-mail indicating the language, the term, and the corresponding English or Taxonomic term."
If you retrieved one or more Allergenic Molecule Monograph a list will appear with:
A progressive number. The background color identifies the section containing the monograph (BLUE, GREEN, RED) (first column);
A Red dot, a Yellow dot or a blank space marking the items as "NEW", "MODIFIED", or "UNMODIFIED", respectively (second column).
The Allergenic Molecule Name (third column);
The inclusion in the IUIS Official Nomenclature List (fourth column);
The Sources of the Allergenic Molecule. Taxonomy and English terms are always displayed. In-language terms are listed if the search has been performed using a language archive (fifth column);
The Allergome Code (sixth column).
Clicking on the Allergenic Molecule Name you want to look for, you enter the Allergenic Molecule Monograph.
Some Allergenic Molecules may have the same name followed by a lowercase letter in brackets [e.g. Art v 1 (a), Art v 1 (b)]. They refer to different molecules whose name has been assigned by different authors, but only one has been included in the IUIS list.
Some Allergenic Molecules may have the same abbreviation as in the IUIS official nomenclature, followed by a Common molecule name (e.g. Aln g Profilin) or an acronym (e.g. Ara h LTP). They refer to Allergenic Molecules characterized in terms of biological and IgE reactivity.
If no filter checkboxes have been used the message "No Allergenic Molecules Identified" (RED section) or "Allergenic Molecules Identified" (GREEN section) may appear instead of the Allergenic Molecule Name (second column). Clicking the message gives you access to a monograph of the Allergenic Sources described in the third column.
3 - Allergenic Monograph
BLUE, GREEN, RED monographs are identified by thin colored frames.
The Allergenic Molecule Monograph may have up to eight pages:
"General Information" page contains data for the identification of the Allergen and its relationship with other Allergens within the Allergome. Data on "Epidemiology", information on available "Reagents", and a complete list of "References" are provided.
"Sequences" page contains data Allergen sequences. It is not present if no sequence is available.
There are two kinds of Links in these pages: "Native Form" page contains data on allergenicity of the Allergen in its natural conformation.
"Recombinant Form" page/s contains data on allergenicity of the molecule obtained by means of molecular biology techniques. "Recombinant Form" pages are named by the expression vector used to express the molecule.
"Epidemiology from Literature" page.
"ReTiME" page contains real time data on IgE sensitization from the ReTiME module.
RED Links: a new "Search" process starts using the term you are clicking on and the selection you defined in your previous search (e.g. "Pollen" will retrieve all the Allergenic Molecules identified in pollen tissue.)
The Allergome searching engine will retrieve a new list of Allergenic Molecules.
An "Allergenic Molecule Found" page will appear (see above) with the list of Allergenic Molecules matching your new search.
BLUE Links: a new window is opened linking you to another web site containing additional information on the Allergenic Molecule you are looking at.
A third kind of link is used to move to other monograph pages (Prevalence or Reference), or to open pop-up pages.
General Information page
The General Information page is divided in the following sections:
- Last Update
Date of the last data entry or editing of the monograph.
- Allergome Code
Univocal progressive code within the Allergome database. Does not distinguish allergenic molecules from allergenic sources.
- Allergenic Molecule Name
It's assigned by the IUIS subcommittee for allergen nomenclature. In the case the allergen name is followed by a link to the IUIS web site.
Allergens lacking an official name have been nominated on the basis of authors' indications, or similarity to homologous protein.
If you are in a RED or GREEN monograph the "No Allergenic Molecules Identified" and "Allergenic Source with Identified Molecules" sentences appear instead of the molecule name, respectively.
- Previous Names
Reports names that have been assigned to the same allergen during the time.
- Common Names
Common names are assigned on the basis of nomenclature of already described molecules. They may be codes used to identify commercial reagents.
- Links to Molecule Sequences
Sequences of allergenic molecules are available, along with many other information on dedicated free web sites (EXPASY, EMBL, NCBI).
- Links to Molecule Images
This section links to molecule images available at the Protein Data Bank web site. Images of allergens are available from the scientific literature and you may find a specific link in the other pages of this web site.
- Biological Function
Function of the allergenic molecule is described in the literature. It may be the result of specific studies or may be derived by the sequence homology to molecules whose function is known.
Terms defining the allergenic source are reported. Taxonomy and English or most common terms are displayed. If an in-language search has been performed in-language terms are added. The full list of the available in-language terms may be obtained by clicking "...other Source Terms in available Languages ->".
To allow Users to easily identify the allergenic sources the Allergome team is adding images in each monograph that are automatically displayed if available.
- Links to Source Taxonomy
NEWT and ITIS web sites are linked to supply full information on taxonomy of allergenic sources. Whenever a species is not listed in the two websites additional resources are linked.
- Links to Source Images
Whenever images are not available for displaying, monographs are linked to free web sites.
- Links to Source Calendars
This section links to free web site having data on dispersal of the source material. As these data often do not refer to the allergenic molecule or to a single species, much of the data are reported for families.
This section describes which part of the source organism releases the allergenic material. A single allergenic molecule may be present in different tissues.
- Routes of Exposure
Routes of allergen penetration into the human body are reported in this section. Exposure to a single allergenic molecule may happen via several routes.
- Isoforms or Allergenic Molecules
This section reports the list of isoallergens that have been described and classified for allergenic molecule (BLUE section).
In the case of the GREEN section, it reports the list of allergenic molecules identified within that source.
- Hybrids, Polymers & Shuffleds
Hybrids, polymers or shuffleds based on allergenic molecules have their components listed in this section.
- Epidemiology from Literature
Data reported in the table of "Epidemiology from Literature" are from the literature. Heading of the columns report data classified. It's possible to sort the table by clicking on one of the headings. Columns containing characters are sorted in increasing alphabetical order. Columns containing number are sorted in decreasing value order. Whenever the table exceed twenty rows a "Epidemiology from Literature" page is created. Only the first twenty rows will be displayed in the General Information page. The complete table is available in the "Epidemiology from Literature" page including the first twenty rows by clicking on "... complete "Epidemiology from Literature" listing ->" button or on the "Epidemiology from Literature" label in the menu.
Links are provided to Companies and Laboratories supplying specific reagents for the allergenic molecule or source described in the monograph.
Several categories are available that classify the reagents:
Diagnostic (in vivo);
Diagnostic (in vitro);
Standardized Allergenic Extracts.
Several categories are available to classify references
a) Biochemistry / Structure / Function
b) Molecular Biology
c) Immunochemistry / Allergenicity
d) Immune-mechanisms / Genetics
e-1) Detection - Indoor Environment
e-2) Detection - Outdoor Environment
e-3) Detection - Source Extracts or Food Products
e-4) Detection - Diagnostic and Immunotherapeutic Products
e-5) Detection - Source Tissues
e-6) Detection - Body Biodistribution
i-1) Animal Model - Allergic Immune Response
i-2) Animal Model - Conjunctival Contact-induced Diseases
i-3) Animal Model - Ingestion-induced Diseases
i-4) Animal Model - Inhalant-induced Diseases
i-5) Animal Model - Injection-induced Diseases
i-6) Animal Model - Skin-induced Diseases
j) Allergic Diseases in Animals
k) Review Citations
A single reference may be assigned to one or more categories depending on its content.
Whenever references in one of the categories exceed twenty a Reference page is created. Only the first twenty References will be displayed in the General Information page. The complete Reference list is available in the Reference page including the first twenty citations by clicking on "...complete Reference listing ->" button or on the Reference label in the menu.
This page display available sequences from sequence databases, from literature, or provided by authors. The following are the sections that can be found in the Sequences page:
Contains sequences as complete, precursor, partial or fragments, N-terminal, C-terminal, and Peptide. Each sequence type is defined in the table. One or more links to the data source are provided.
IgE binding sequences (B-epitope) are displayed. One or more links to the data source are provided.
Epitope sequences identified by T cells (T-epitope) are displayed. One or more links to the data source are provided.
IgE binding sequences identified as conformational epitopes (mimotope) are displayed. One or more links to the data source are provided.
- Sequence Motif
Sequence motifs represent shared amino acid sequences among allergenic molecules. Sequence motifs have been obtained on the basis of a collaborative study with the Institute of Immunology Bern, Inselspital, Bern, Switzerland, by the method described by Stadler MB, Stadler BM (FASEB J 2003;17(9):1141-3). The last allergen motif discovery run has been performed on November 29, 2005, by using 1157 sequences from the Allergome database. This resulted in 76 motifs representing 960 allergenic molecules. The remaining 197 allergenic molecules did not match a motif.
The Allergome O-ring
The Allergome O-ring is the current representation of the reciprocal relationships among allergenic molecules. It is dynamically generated at the time you click the button. It works in both Sequence Homology and Cross Reactivity sections. By clicking one of the two buttons, or , the Allergome software runs an analysis of the data available in the selected section. Data are obtained from Native and Recombinant pages of all the related allergens. A graph is generated in a new window. The allergen you are starting from is at the top of the Allergome O-ring. All the related allergens are in clockwise alphabetical order. Arrowheads indicate in which direction the data has been documented. A green line connecting two molecules corresponds to a double-side arrowhead. A red line indicates a single way relationship. If you access the O-ring page via the you may click the name of an allergen opening its monograph in a new page, but you can not modify the image dimension. If you access the O-ring page via the you can not click the name of an allergen to open its monograph, but you can zoom the image. To allow a comparative evaluation, two different windows are opened for the Allergome Sequence Homology O-ring and the Allergome Cross Reactivity O-ring, respectively. Not all the allergens have the same number of studies. If a connecting line is not present it may indicate either absence of relationship or missing data.
The "Real Time Monitoring of IgE sensitization" (ReTiME) module is a database created to acquire and store real time data.
Data on IgE sensitization can be supplied by any contributor willing to share his/her own data with the international scientific community.
Data from the ReTiME database are displayed in each allergen monograph in a dedicated page.
The ReTiME search engine, allowing to explore available data in deep, is not a free access area. This area can be accessed by data providers, Allergome scientific collaborators, or financial contributors to the Allergome project.
If you want to know more about ReTiME please contact the Allergome administrator.
If like to have a two week trial period to test the ReTiME module please contact the Allergome administrator.
We greatly appreciate your feedback if you find any error in the Allergenic Molecule Monograph data.
If you don't find what you expected in a search or you are aware of any identified allergen that is not in the Allergome Database, please contact us.
General purposes and contacts with the Allergome team and collaborators: email@example.com
To contact the administrator: firstname.lastname@example.org
For your valuable feedback: email@example.com
To place your link in the Links page: firstname.lastname@example.org
To contact the Allergy Data Laboratories: email@example.com
Dr. Adriano Mari
Allergy Data Laboratories s.c.
Via Malipiero 28
04100 Latina, Italy
tel +39 330860005
fax +39 0773 620787
To follow the examples access to the Allergome website by activating your browser in a new window.
Start in the Search page. Enter "Birch" in the text field of the QUICK search;
A page with a list of Allergens appears. Click on "Bet v 1" and have a look to the General Information, Native and Recombinant pages;
Go back to the General Information page and click on the "Blue" links. New windows will be opened linking you with other web sites. Close the new windows;
Click now on "Betula verrucosa". You get the same list as for "Birch". Click now on "Bet v 4";
The Bet v 4 General Information page appears. Have a look and then click on "Calcium-binding Proteins";
A new Search result appears containing all the Calcium-binding Proteins. You may go on clicking on any of the listed molecules and have a look at the results. You can go back to the Search page using the Search button on the heading line.
You are in the Search page. Enter "Profil" in the text field of the QUICK search and select the "substring" checkbox;
You get a list of Profilins. Some of them have not the official IUIS name;
Go back to the Search page using the "Back to Allergenic Molecule Search Form" button;
Click on the IUIS checkbox and do a new Search with Profilin;
You get a new list where the non-officially named molecules are excluded;
Click on any of the Profilins and explore the data;
Go back to the Search page using the Search button on the heading line.
Enter "Ailanthus" in the text field of the ADVANCED Search;
You get a single line. Instead of the Allergen name the message "No Allergenic Molecules Identified" appears;
If you click on the message you will get information on an Allergenic source still lacking any identified allergenic molecule.
Go back to the Search page using the Search button on the heading line;
Click on the "All the Identified Allergens" checkbox and do the Search again with "Ailanthus";
The allergenic source monograph is no more available;
Go back to the Search page using the Search button on the heading line.
Search page. You may use either the Quick or the Advanced Search forms;
Select a language from the menu;
Enter a term in selected language;
Search for the term:
You get a list of allergens and in the source column in-language terms are listed along with taxonomic and English terms;
Select one of the allergens;
Locate the Source section;
Click on "... other Source Terms in available Languages -> "
You get a pop-up window where terms identifying the source are listed in all the available languages.
Close this window.
Go back to the Search page using the Search button on the heading line
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