Immunogen sequence: QIQRNVTLFP PDVIASIFSS AWWVPPCCGT ASAVIGLLYP CIDRHLGEPH KFKREWSSVM RCVAVFVGIN HASAKVDFDN NIQLSLTLAA LSIGLWWTFD R. INSIG2 is highly similar to the protein product encoded by gene INSIG1. Both INSIG1 protein and this protein are endoplas