Abstract: The present disclosure provides genetically modified cells and non-human organisms, and methods of producing such cells and organisms. Also provided are methods of editing the genome of such cells and organisms. The cells and non-human organisms of the disclosure are genetically modified such that their genome includes an integrated heterologous nucleic acid (that includes a CRISPR/Cas target sequence) at one or more (e.g., 2 or more, 3 or more, 4 or more, etc.) positions within the genome. The integrated nucleic acids, which include the same CRISPR/Cas target sequence, allow for simultaneous gene editing at multiple different positions within a genome using a single species of CRISPR/Cas guide RNA (i.e., one guide RNA will target multiple sites because the multiple sites have the same target sequence).

Abstract: The present disclosure provides genetically modified cells and non-human organisms, and methods of producing such cells and organisms. Also provided are methods of editing the genome of such cells and organisms. The cells and non-human organisms of the disclosure are genetically modified such that their genome includes an integrated heterologous nucleic acid (that includes a CRISPR/Cas target sequence) at one or more (e.g., 2 or more, 3 or more, 4 or more, etc.) positions within the genome. The integrated nucleic acids, which include the same CRISPR/Cas target sequence, allow for simultaneous gene editing at multiple different positions within a genome using a single species of CRISPR/Cas guide RNA (i.e., one guide RNA will target multiple sites because the multiple sites have the same target sequence).

Abstract: Methods and compositions are provided for endopeptidase production, enhanced efficiencies of processing in vivo and in vitro to provide for process polypeptides, and purified enzyme for in vitro processing of polypeptides. The endopeptidase is specific for dibasic amino acid sites, cleaving at the C-side of the dipeptide.The S. cerevisiae strain pYBCA-5 (truncated KEX2) was deposited at the A.T.C.C. on June 21, 1984 and given Accession No. 20717.