I/LWEQ domains bind to actin. It has been shown that the I/LWEQ domains from mouse talin Swiss:P26039 and yeast Sla2p Swiss:P33338 interact with F-actin [1]. I/LWEQ domains can be placed into four major groups based on sequence similarity: (1) Metazoan talin; (2) Dictyostelium TalA/TalB Swiss:P54633 and SLA110; (3) metazoan Hip1p Swiss:O00291; and (4) yeast Sla2p Swiss:P33338. The domain has four conserved blocks, the name of the domain is derived from the initial conserved amino acid of each of the four blocks [1].

1: The I/LWEQ module: a conserved sequence that signifies F-actin binding in functionally diverse proteins from yeast to mammals. McCann RO, Craig SW; Proc Natl Acad Sci U S A 1997;94:5679-5684. PMID:9159132