نتایج جستجو برای: isozymes
تعداد نتایج: 3847 فیلتر نتایج به سال:
The production of protease activity by the sugarbeet pathogen Aphanomyces cochlioides, the legume pathogen A. euteiches, and the fish pathogen Saprolegnia parasitica was examined. Protease activity was readily detected in supernatants of water cultures of each organism using autoclaved host tissue as a nutrient source. Most of the protease isozymes extracted from sugarbeet and pea seedlings inf...
We sought to determine which isozymes of protein kinase C (PKC) contribute to the increased proliferation of immature bovine pulmonary artery (PA) adventitial fibroblasts. Seven were identified in lysates of neonatal PA fibroblasts by Western blot: three Ca2+ dependent (α, βI, and βII) and four Ca2+ independent (δ, ε, ζ, and μ). Four isozymes (γ, η, θ, and ι) were not detected in fibroblasts is...
In recent studies the lactate dehydrogenase (LDH) isozymes of adult (Lindsay, '63) and embryonic (Philip and Vesell, '62; Nebel and Conklin, '64) chick liver were demonstrated. A maximum of six isozymes were found in the embryonic liver while four isozymes were present in the liver after hatching. While several theories (Apella and Markert, '61; Markert, '62; Cahn et al., '62; Fritz and Jacobso...
To understand how cells differentially use the dozens of myosin isozymes present in each genome, we examined the distribution of four unconventional myosin isozymes in the inner ear, a tissue that is particularly reliant on actin-rich structures and unconventional myosin isozymes. Of the four isozymes, each from a different class, three are expressed in the hair cells of amphibia and mammals. I...
PURPOSE To investigate the role of protein kinase C (PKC) isozymes in epithelial growth factor (EGF)-induced activation of extracellular signal-regulated kinase (ERK) and cell proliferation in cultured human corneal epithelial cells. METHODS Simian virus (SV)40 stably transfected human corneal epithelial (THCE) cells were cultured in keratinocyte growth medium. PKC isozymes and phosphorylatio...
Tomato polygalacturonase is a cell wall enzyme secreted in large amounts during tomato fruit ripening. Polygalacturonase is synthesized as a glycoprotein precursor that undergoes numerous cotranslational and post-translational processing steps during its maturation, yielding three isozymes in tomato fruit, PG1, PG2A, and PG2B. To investigate the physiological roles of the three isozymes and the...
Phosphoinositide-specific phospholipase C is an effector molecule in the signal transduction process. It generates two second messengers, inositol-1,4,5-trisphosphate and diacylglycerol from phosphatidylinositol 4,5-bisphosphate. Currently, thirteen mammal PLC isozymes have been identified, and they are divided into six groups: PLC-beta, -gamma, -delta, -epsilon, -zeta and -eta. Sequence analys...
The mitochondrial MDH isozymes in the scutellum of the mature maize (Zea mays L.) kernel are encoded by three independently inherited nuclear genes. Mdh1 is located on chromosome 8, close to the breakpoint (8L.35) of a waxy-marked reciprocal translocation between chromosomes 8 and 9. Mdh2 is located in the distal region of the long arm of chromosome 6. Mdh3 is on the long arm of chromosome 3, a...
While acute activation of inhibitory Gi/o-coupled receptors leads to inhibition of adenylyl cyclase, chronic activation of such receptors leads to an increase in cAMP accumulation. This phenomenon, observed in many cell types, has been referred to as adenylyl cyclase superactivation. At this stage, the mechanism leading to adenylyl cyclase superactivation and the nature of the isozyme(s) respon...
DNA restriction fragment length polymorphisms (RFLPs) and isozyme variation were surveyed in 268 accessions of a wild barley (Hordeum vulgare ssp. spontaneum) sampled from diverse ecogeographical areas in Israel and Iran. A total of 24 markers was used: 7 well characterized isozyme loci and 15 DNA probes which detected 17 putative loci and included three classes of DNA sequences (single copy, l...
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