PROTEIN CONSTRUCTS OF MOLONEY MURINE LEUKEMIA VIRUS REVERSE TRANSCRIPTASE (MMLV-RT)

    公开(公告)号:US20230348868A1

    公开(公告)日:2023-11-02

    申请号:US18012666

    申请日:2021-07-07

    IPC分类号: C12N9/12 C12N15/70 C12Q1/48

    摘要: Described are protein constructs of Moloney murine leukemia virus reverse transcriptase (MMLV-RT). In one embodiment the protein construct comprises a Moloney murine leukemia virus reverse transcriptase (MMLV) mature protein sequence; and an expression enhancement sequence at the N-terminus of said MMLV mature protein sequence. The expression enhancement sequence is devised for providing heterologous expression of the protein construct in bacterial cells in absence of chaperone co-expression and/or to provide high-level of expression of the MMLV. In another embodiment the protein construct further comprises a tag/linker combo at the N-terminus of the expression enhancement sequence for assisting in purification of the protein construct. Also described are isolated nucleic acid molecules, vectors and methods for expressing the protein construct in cells. Advantageously these allow large-scale expression of MMLV-RT from cultures of E. coli cells and simplify protocols for purification of MMLV-RT at high purity.

    METHOD AND SYSTEM FOR GENERATING CANDIDATE VOCABULARY

    公开(公告)号:US20230334087A1

    公开(公告)日:2023-10-19

    申请号:US18302475

    申请日:2023-04-18

    摘要: System and method for generating candidate vocabulary words and presenting them to a user. The system compares an input image to reference images, based on text descriptions of the images, and determines relevant images. Stories associated with the relevant images are then analyzed to determine frequent words in the stories. In one embodiment, the frequent words are presented to the user as candidate words. In another embodiment, a vocabulary database is first accessed to determine other words that are associated with the frequent words in the stories. The frequent words in the stories and the other words from the vocabulary database are then provided to the user as candidate vocabulary words. The user can select desired candidate words through their computing device. In some embodiments, the stories are clustered together before word frequency is analyzed.