pfam07815: Abi_HHR (This model is not part of the current CDD release)
Abl-interactor HHR
The region featured in this family is found towards the N-terminus of a number of adaptor proteins that interact with Abl-family tyrosine kinases. More specifically, it is termed the homeo-domain homologous region (HHR), as it is similar to the DNA-binding region of homeo-domain proteins. Other homeo-domain proteins have been implicated in specifying positional information during embryonic development, and in the regulation of the expression of cell-type specific genes. The Abl-interactor proteins are thought to coordinate the cytoplasmic and nuclear functions of the Abl-family kinases, and seem to be involved in cytoskeletal reorganisation, but their precise role remains unclear.
Jiyao W et al.(2023). "The conserved domain database in 2023.",