Apologies - the RAID controller on our main server has failed. This affects our database and other services - most of these WILL NOT WORK! We are working to restore this as soon as possible.

Human Subgroup Assignment

This page allows you to identify the subgroup of a human light or heavy chain. The code which does the actual assignments was kindly supplied by Sophie Deret ( ) and it normally features as part of her Subim program. (You can also download from bioinf.org.uk)

The method is described in Deret, S. et al (1995), SUBIM: a Program for Analysing the Kabat Database and Determining the Variability Subgroup of a new Immunoglobulin Sequence, Comput Appl Biosci, 11, 435-439.


Enter the amino acid sequence (1-letter code) of your light or heavy chain variable fragment here:

Please enter your EMail address here:

To submit your antibody sequence, press here: .

To clear the form, press here: .

Commercial Use

Companies may use this public server, but need to be aware that data are not encrypted and it is not secure.

After trialing the system, companies should consider Abysis. A commercial licence will enable you to install a local version of this code together with an integrated database which can also store and analyse proprietary sequence and structure data.

For information on commercial licences, please contact the distributor Ebisu.


Copyright (c) 1997, Andrew C.R. Martin, UCL