Peptide Sequence: QRGRKKVVHV LEGESGSVVV QTAPGQVVSH RGGTIVLPCR YHYEAAAHGH DGVRLKWTKV VDPLAFTDVF VALGPQHRAF GSYRGRAELQ GDGPGDASLV LRNVT. Hyaluronan and proteoglycan link protein 4 (HAPLN4), also known as Brain Link Protein 4 (BRAL1), is a gene located on c