The graphs in this tab give insight into the subclass distribution of IGG and IGA transcripts. Human Cµ, Cα, Cγ and Cε constant genes are assigned using a custom script specifically designed for human (sub)class assignment in repertoire data as described in van Schouwenburg and IJspeert et al, submitted for publication. In this script the reference sequences for the subclasses are divided in 8 nucleotide chunks which overlap by 4 nucleotides. These overlapping chunks are then individually aligned in the right order to each input sequence. The percentage of the chunks identified in each rearrangement is calculated in the ‘chunk hit percentage’. Cα and Cγ subclasses are very homologous and only differ in a few nucleotides. To assign subclasses the ‘nt hit percentage’ is calculated. This percentage indicates how well the chunks covering the subclass specific nucleotide match with the different subclasses. Information on normal distribution of subclasses in healthy individuals of different ages can be found in IJspeert and van Schouwenburg et al, PMID: 27799928.
Pie chart showing the relative distribution of IGA1 and IGA2 transcripts in the sample.
IGG subclass distribution
Pie chart showing the relative distribution of IGG1, IGG2, IGG3 and IGG4 transcripts in the sample.