Serine codon 513 (TCT) in exon 6 was changed to alanine (GCT) (p.S513A) using sgRNAs (targeting GTGGGTGGGGGTAATGGGTA and CCTACCCATCCAGAGTAC) and an ssODN template with CRISPR/Cas9 technology. The mutation blocks phosphorylation of the affected residue in the encoded peptide. (J:277918)