Predicted to enable complement component C3b binding activity. Predicted to be involved in negative regulation of T cell proliferation; negative regulation of complement activation, alternative pathway; and negative regulation of interleukin-2 production. Predicted to be integral component of membrane. Predicted to be part of protein-containing complex. Orthologous to human VSIG4 (V-set and immunoglobulin domain containing 4). [provided by Alliance of Genome Resources, Apr 2022]