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Kazuhisa Nakayama,Kim, Won-Sin,Seiji Torii,Masahiro Hosaka,Tsutomu Nakagawa,Jo Ikemizu,Tadashi Baba,Kazuo Murakami 원광대학교기초자연과학연구소 1992 基礎科學硏究誌 Vol.11 No.3
We used the polymerase chain reaction to identify a mouse testis cDNA that represented another member of a growing class of mammalian endoproteases involved in the processing of precursor proteins. This cDNA encoded a 655-residue protein, designated PC4, containing a bacterial subtilisin-like catalytic domain closely related to those of the recently characterized precursor-processing endoproteases, furin, PC1/PC3, PC2, and Kex2. Within this domain, the amino acid sequence of PC4 was 70, 58, 55, and 45% identical with those of mouse furin, mouse PC1/PC3, mouse PC2, and yeast Kex2, respectively. Northern blot analysis indicated that the PC4 mRNA was detectable only in the testes after the 20th day of postnatal development. Moreover, this message was mainly expressed in the round spermatids. These data suggest that PC4 represents a prime candidate for a precursor-processing endoprotease in the testicular germ cells and that its gene expression is regulated during spermatogenesis.
Genomic Basis for Methicillin Resistance in Staphylococcus aureus
Keiichi Hiramatsu,Teruyo Ito,Sae Tsubakishita,Takashi Sasaki,Fumihiko Takeuchi,Yuh Morimoto,Yuki Katayama,Miki Matsuo,Kyoko Kuwahara-Arai,Tomomi Hishinuma,Tadashi Baba 대한감염학회 2013 Infection and Chemotherapy Vol.45 No.2
Since the discovery of the first strain in 1961 in England, MRSA, the most notorious multidrug-resistant hospital pathogen, has spread all over the world. MRSA repeatedly turned down the challenges by number of chemotherapeutics, the fruits of modern organic chemistry. Now, we are in short of effective therapeutic agents against MRSA prevailing among immuno-compromised patients in the hospital. On top of this, we recently became aware of the rise of diverse clones of MRSA, some of which have increased pathogenic potential compared to the classical hospital-associated MRSA, and the others from veterinary sources. They increased rapidly in the community, and started menacing otherwise healthy individuals by causing unexpected acute infection. This review is intended to provide a whole picture of MRSA based on its genetic makeup as a versatile pathogen and our tenacious colonizer.