A new signal peptidase gene from Streptomyces lividans TK21.
Using synthetic oligonucleotides derived from known signal peptidase genes and a multicopy plasmid as a vector, a signal peptidase gene (sipZ) from Streptomyces lividansTK21 has been cloned. The primary structure of the gene has been determined and the amino acid composition of the SipZ protein inferred. SipZ is 258 aa long and showed homology to other type I signal peptidases, containing like them an N-terminal transmembrane anchor. Alignment of SipZ with other known SPases allowed the identification of a conserved sequence of amino acids specific for Gram-positive bacteria.
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Centro Nacional de Biotecnología (CSIC), Madrid, Spain.
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D000595:Amino Acid Sequence; D001483:Base Sequence; D003001:Cloning, Molecular; D017124:Conserved Sequence; D005798:Genes, Bacterial; D008565:Membrane Proteins; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction / Q000379:methods; D015183:Restriction Mapping; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D012697:Serine Endopeptidases / Q000737:chemistry / Q000235:genetics*; D013302:Streptomyces / Q000201:enzymology* / Q000235:genetics
D008565:Membrane Proteins; D012697:Serine Endopeptidases; C026515:type I signal peptidase