Beta-galactosidase (lacZ), Biotinylated, Escherichia coli, recombinant

Organism: Escherichia coli (strain K12). Source: E.coli. Expression Region: 2-1024aa. Protein Length: Full Length of Mature Protein. Tag Info: N-terminal MBP-tagged and C-terminal 6xHis-Avi-tagged. Target Protein Sequence: TMITDSLAVV LQRRDWENPG VTQLNRLAAH PPFASWRNSE EARTDRPSQQ LRSLNGEWRF AWFPAPEAVP ESWLECDLPE ADTVVVPSNW QMHGYDAPIY TNVTYPITVN PPFVPTENPT GCYSLTFNVD ESWLQEGQTR IIFDGVNSAF HLWCNGRWVG YGQDSRLPSE FDLSAFLRAG ENRLAVMVLR WSDGSYLEDQ DMWRMSGIFR DVSLLHKPTT QISDFHVATR FNDDFSRAVL EAEVQMCGEL RDYLRVTVSL WQGETQVASG TAPFGGEIID ERGGYADRVT LRLNVENPKL WSAEIPNLYR AVVELHTADG TLIEAEACDV GFREVRIENG LLLLNGKPLL IRGVNRHEHH PLHGQVMDEQ TMVQDILLMK QNNFNAVRCS HYPNHPLWYT LCDRYGLYVV DEANIETHGM VPMNRLTDDP RWLPAMSERV TRMVQRDRNH PSVIIWSLGN ESGHGANHDA LYRWIKSVDP SRPVQYEGGG ADTTATDIIC PMYARVDEDQ PFPAVPKWSI KKWLSLPGET RPLILCEYAH AMGNSLGGFA KYWQAFRQYP RLQGGFVWDW VDQSLIKYDE NGNPWSAYGG DFGDTPNDRQ FCMNGLVFAD RTPHPALTEA KHQQQFFQFR LSGQTIEVTS EYLFRHSDNE LLHWMVALDG KPLASGEVPL DVAPQGKQLI ELPELPQPES AGQLWLTVRV VQPNATAWSE AGHISAWQQW RLAENLSVTL PAASHAIPHL TTSEMDFCIE LGNKRWQFNR QSGFLSQMWI GDKKQLLTPL RDQFTRAPLD NDIGVSEATR IDPNAWVERW KAAGHYQAEA ALLQCTADTL ADAVLITTAH AWQHQGKTLF ISRKTYRIDG SGQMAITVDV EVASDTPHPA RIGLNCQLAQ VAERVNWLGL GPQENYPDRL TAACFDRWDL PLSDMYTPYV FPSENGLRCG TRELNYGPHQ WRGDFQFNIS RYSQQQLMET SHRHLLHAEE GTWLNIDGFH MGIGGDDSWS PSVSAEFQLS AGRYHYQLVW CQK. Purity: Greater than 90% as determined by SDS-PAGE. Endotoxin: Not test. Biological Activity: n/a. Form: Liquid or Lyophilized powder. Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0. Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20 °C/-80 °C. Our default final concentration of glycerol is 50%. Customers could use it as reference. Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20 °C/-80 °C. The shelf life of lyophilized form is 12 months at -20 °C/-80 °C. Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4 °C for up to one week. Relevance: Plays an essential role in the initiation of viral DNA synthesis. Binds specifically to an inverted terminal repeat element (ITR) on the 3' and 5' ends of the viral DNA, where it cleaves a site specifically to generate a priming site for initiation of the synthesis of a complementary strand. Also plays a role as transcriptional regulator, DNA helicase and as key factors in site-specific integration of the viral genome. Regulates host PKA activity by interacting with host PRKX as a mechanism of interfering with helper virus propagation and promoting its own replication. Inhibits the host cell cycle G1/S, S and G2/M transitions. These arrests may provide essential cellular factors for viral DNA replication. Reference: "Inhibition of S-phase progression by adeno-associated virus Rep78 protein is mediated by hypophosphorylated pRb." Saudan P., Vlach J., Beard P. EMBO J. 19:4351-4361(2000). Function: nan