% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Janzik:9618, author = {Janzik, I. and Macheroux, P. and Amrhein, N. and Schaller, A.}, title = {{L}e{SBT}1, a subtilase from tomato plants}, journal = {The journal of biological chemistry}, volume = {275}, issn = {0021-9258}, address = {Bethesda, Md.}, publisher = {Soc.}, reportid = {PreJuSER-9618}, pages = {5193 - 5199}, year = {2000}, note = {Record converted from VDB: 12.11.2012}, abstract = {The cDNA of a tomato subtilase designated LeSBT1 was cloned from a tomato flower cDNA library. The deduced amino acid sequence indicated for LeSBT1 the structure of a prepro-protein targeted to the secretory pathway by virtue of an amino-terminal signal peptide. LeSBT1 was expressed in the baculovirus/insect cell system and a processed 73-kDa form of LeSBT1, lacking both signal peptide and prodomain, was purified to homogeneity from culture supernatants, This 73-kDa LeSBT1, however, lacked proteolytic activity. Zymogen activation to yield 68-kDa LeSBT1 required the additional processing of an amino-terminal autoinhibitory peptide in a strictly pH-dependent manner. Mature 68-kDa LeSBT1 showed highest activity at acidic pH consistent with its presumed localization in the apoplast of the plant cell. In comparison to other plant subtilases, LeSBT1 exhibited a narrower substrate specificity in that it cleaves only polypeptide substrates preferentially but not exclusively carboxyl-terminal of glutamine residues. The possible involvement of LeSBT1 in selective proprotein processing is discussed with reference to the related mammalian proprotein convertases.}, keywords = {J (WoSType)}, cin = {ICG-6}, ddc = {570}, cid = {I:(DE-Juel1)VDB144}, pnm = {Pflanzenphysiologie des Spurengasaustauschs mit der Atmosphäre}, pid = {G:(DE-Juel1)FUEK82}, shelfmark = {Biochemistry $\&$ Molecular Biology}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000085378200092}, url = {https://juser.fz-juelich.de/record/9618}, }