Gel shift assay of nuclear extracts from Histoplasma capsulatum demonstrates the presence of several DNA binding proteins.

نویسندگان

  • Atanas Ignatov
  • Elizabeth J Keath
چکیده

A gel shift assay was optimized to detect several general DNA binding proteins from Histoplasma capsulatum strain G217B. The electrophoretic mobility shift assay (EMSA) technique also detected protein(s) recognizing a pyrimidine-rich motif found in several Histoplasma promoters. Establishment of EMSA conditions provides an important framework to evaluate regulation of homeostatic or phase-specific genes that may influence virulence in Histoplasma and other dimorphic fungal pathogens.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Identification and characterization of a phase-specific, nuclear DNA binding protein from the dimorphic pathogenic fungus Histoplasma capsulatum.

Genes expressed in the parasitic yeast (Y) phase of the dimorphic fungal pathogen Histoplasma capsulatum which are transcriptionally silent in the mycelial (M) phase have recently been cloned and analyzed. To understand the molecular regulation of genes involved in the transition to and maintenance of the Y phase, the presumptive 5' regulatory regions of two Y phase-specific genes (yps-3 and yp...

متن کامل

DNA mobility shift assay coupled with SDS-PAGE for detection of DNA-binding proteins.

DNA mobility shift assay is widely performed to analyze sequence-specific DNA-binding proteins in cellular extracts (2), and the DNA-binding proteins can be identified by use of antibodies that induce further retardation of probes (supershift). Gel extracts from a shifted band contain not only DNA segments and DNA-binding proteins but also nonspecific proteins located at the same position in th...

متن کامل

بهینه سازی استخراج DNA ژنومی باکتریایی به روش سیلیکاژل

Background & Objectives: Today, major progress has been made in molecular experiments. The first step towards improving these experiments is the accurate extraction of nucleic acid. In this study, a protocol for DNA extraction was proposed in accordance with silica gel method. DNA purification, developed based on the silica-gel-membrane technology, is a simple method, which involves three s...

متن کامل

Isolation and cloning of putative mouse DNA replication initiation sites: binding to nuclear protein factors.

By using an original two-step technique (trioxsalen crosslinking/immunoprecipitation) we were able to isolate in a single-stranded form a fraction of mouse DNA enriched in putative Replication Initiation Sequences (RIS). The isolated and purified single-strand fragments were made double-stranded in vitro and were cloned in pUC12 to prepare a confined RIS library. 30 randomly selected RIS insert...

متن کامل

Identification of Histoplasma capsulatum from culture extracts by real-time PCR.

We designed and tested a real-time LightCycler PCR assay for Histoplasma capsulatum that correctly identified the 34 H. capsulatum isolates in a battery of 107 fungal isolates tested and also detected H. capsulatum in clinical specimens from three patients that were culture positive for this organism.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Infection and immunity

دوره 70 4  شماره 

صفحات  -

تاریخ انتشار 2002