Abstract:
:A new protein kinase modulated by S-100 (tentatively referred to as protein kinase X) was partially purified from pig brain extracts. The activity of protein kinase X, which was independent of Ca2+, was demonstrated when protamine (free base), but not protamine sulfate and other proteins (including histone), was used as substrate. The enzyme activity, found to distribute in both soluble and particulate fractions and to occur at the highest level in brain compared with other tissues (heart, kidney, liver, skeletal muscle, spleen, and testis) of rats, was also modulated by other acidic proteins (calmodulin, troponin C, and stimulatory modulator) in a Ca2+ -independent manner. S-100 and other acidic proteins appeared to function as "substrate modifiers" by interacting with protamine (a highly basic protein), but not with the enzyme, thus rendering protamine in the complex a superior phosphate acceptor. The two isoforms of S-100 (i.e., a and b) were equally effective. Although the enzyme was not inhibited by many agents (trifluoperazine, melittin, cytotoxin I, polymyxin B, and spermine) shown to inhibit markedly phospholipid/Ca2+- or calmodulin/Ca2+ -stimulated protein kinase, gossypol was found to inhibit specifically protein kinase X. The present findings suggest that S-100, a major acidic protein specific to nervous system, may promote phosphorylation by protein kinase X of certain neural proteins resembling protamine or containing protamine-like domains, in addition to its presumed role of a low-affinity Ca2+ -binding protein.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Qi DF,Turner RS,Kuo JFdoi
10.1111/j.1471-4159.1984.tb02699.xsubject
Has Abstractpub_date
1984-02-01 00:00:00pages
458-65issue
2eissn
0022-3042issn
1471-4159journal_volume
42pub_type
杂志文章abstract::The neurotoxic effect of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) was tested on mice lacking the dopamine (DA) transporter (DAT-/- mice). Striatal tissue DA content and glial fibrillary acidic protein (GFAP) mRNA expression were assessed as markers of MPTP neurotoxicity. MPTP (30 mg/kg, s.c., b.i.d.) produc...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1997.69031322.x
更新日期:1997-09-01 00:00:00
abstract::Machado-Joseph disease (MJD) is an autosomal dominant neurodegenerative disorder caused by an expansion of the polyglutamine tract near the C-terminus of the MJD-1 gene product, ataxin-3. Ataxin-3 is degraded by the proteasome. However, the precise mechanism of ataxin-3 degradation remains to be elucidated. In this st...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2007.04460.x
更新日期:2007-06-01 00:00:00
abstract::De novo heterozygous mutations in the STX1B gene, encoding syntaxin 1B, cause a familial, fever-associated epilepsy syndrome. Syntaxin 1B is an essential component of the pre-synaptic neurotransmitter release machinery as a soluble N-ethylmaleimide-sensitive factor attachment protein receptor protein that regulates th...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/jnc.15159
更新日期:2020-08-28 00:00:00
abstract::The time course of Ca2+-dependent [3H]acetylcholine [( 3H]ACh) release and inactivation of 45Ca2+ entry were examined in rat brain synaptosomes depolarized by 45 mM [K+]0. Under conditions where the intrasynaptosomal stores of releasable [3H]ACh were neither exhausted nor replenished in the course of stimulation, the ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1983.tb04820.x
更新日期:1983-09-01 00:00:00
abstract::Induction of the prodynorphin gene occurs in a tissue-specific manner following different physiological stimuli. Using electrophoretic mobility shift assays, we studied the relative activity of the five major regulatory sites in the rat prodynorphin promoter. Prodynorphin cyclic AMP-responsive element 2 (DynCRE2), Dyn...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1998.70030914.x
更新日期:1998-03-01 00:00:00
abstract::The normal developmental profile of preprotachykinin (PPT) gene expression was determined in rat striatum from embryonic day 20 to adulthood (greater than 45 days of age). At embryonic day 20, the amount of striatal PPT mRNA was approximately 8% of adult levels, and this specific mRNA approached adult levels by postna...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1990.tb04557.x
更新日期:1990-09-01 00:00:00
abstract::We used both the polymerase chain reaction (PCR) and in situ hybridization to search for the presence of proteolipid protein (PLP) gene transcripts in the developing mouse. Total brain RNA extracted from 13-19-day embryos, analyzed by PCR, demonstrated the presence of a single transcript that was unambiguously identif...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1992.tb09378.x
更新日期:1992-03-01 00:00:00
abstract::Parkinson disease (PD) is a prevalent neurodegenerative disease, in which the formation of misfolded and aggregated α-synuclein is a key neuropathological hallmark. Recent studies reveal that extracellular vesicles such as exosomes present a potential mechanism for propagation of pathological α-synuclein throughout th...
journal_title:Journal of neurochemistry
pub_type: 杂志文章,评审
doi:10.1111/jnc.15288
更新日期:2020-12-29 00:00:00
abstract::Vinblastine causes alterations in the subcellular distribution of certain proteins synthesized by telencephalon slices. Proteins in various subcellular fractions were separated according to their molecular weight by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and radioactive proteins were determined by ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1980.tb12492.x
更新日期:1980-07-01 00:00:00
abstract::Manganese is an essential nutrient, integral to proper metabolism of amino acids, proteins and lipids. Excessive environmental exposure to manganese can produce extrapyramidal symptoms similar to those observed in Parkinson's disease (PD). We used in vivo and in vitro models to examine cellular and circuitry alteratio...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2009.06145.x
更新日期:2009-07-01 00:00:00
abstract::Isolated rat CNS mitochondria and cultured cortical astrocytes were examined for behavior indicative of a mitochondrial permeability transition (mPT). Exposure of isolated CNS mitochondria to elevated calcium or phosphate or both produced loss of absorbance indicative of mitochondrial swelling. The absorbance decrease...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1997.69020524.x
更新日期:1997-08-01 00:00:00
abstract::Substrate-induced endocytic trafficking of dopamine transporter (DAT) has been observed, but little is known about the regulation of DAT oligomerization by substrate. The present study investigates the effect on substrates on DAT oligomerization and explores a potential link with the presence of DAT at the cell surfac...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2007.05195.x
更新日期:2008-05-01 00:00:00
abstract::Organotypic rat hippocampal slice cultures were used to study the role of excitatory amino acid transporters (EAATs) in kainate-induced cell death. Expression of the neuronal (EAAT3) or glial (EAAT2) transporters was inhibited with antisense phosphothioate oligonucleotides, and cytotoxicity was assessed with propidium...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:
更新日期:1999-11-01 00:00:00
abstract::beta-Methyleneaspartate, a specific inhibitor of aspartate aminotransferase (EC 2.6.1.1.), was used to investigate the role of the malate-aspartate shuttle in rat brain synaptosomes. Incubation of rat brain cytosol, "free" mitochondria, synaptosol, and synaptic mitochondria, with 2 mM beta-methyleneaspartate resulted ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1988.tb03044.x
更新日期:1988-05-01 00:00:00
abstract::Tryptophan hydroxylase (TPH) is the initial and rate-limiting enzyme in serotonin biosynthesis. The enzyme activity is dependent on molecular oxygen, a tetrahydropterin cosubstrate, and ferrous iron. The present study demonstrates that TPH is inhibited by a novel compound, p-ethynylphenylalanine (pEPA), produced by th...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.2000.0742067.x
更新日期:2000-05-01 00:00:00
abstract::A neutral, mannose-rich, concanavalin A (Con A)-binding glycopeptide fraction was obtained by proteolytic digestion of defatted beef brain tissue. Hydrazinolysis followed by gel filtration of the reaction products provided three oligosaccharides. A portion of each oligosaccharide was treated by exhaustive digestion wi...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1983.tb04746.x
更新日期:1983-08-01 00:00:00
abstract::Apoptotic cell death has recently been implicated in diseases involving nonproliferating, terminally differentiated cells such as neurons. Previous experiments have documented that immunoglobulins from patients with amyotrophic lateral sclerosis (ALS) can kill motoneuron-neuroblastoma hybrid cells [ventral spinal cord...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1994.63062365.x
更新日期:1994-12-01 00:00:00
abstract::Bone fracture at the acute stage of stroke exacerbates stroke injury by increasing neuroinflammation. We hypothesize that activation of α-7 nicotinic acetylcholine receptor (α-7 nAchR) attenuates neuroinflammation and oxidative stress, and reduces brain injury in mice with bone fracture and stroke. Permanent middle ce...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/jnc.12817
更新日期:2014-11-01 00:00:00
abstract::Explants of adrenal medullae were cultured in defined media for up to 48 h, during which time the tissue remained histologically intact. Addition of N6-methyladenosine to the medium led to a diminution in the activity of phenylethanolamine N-methyltransferase (EC 2.1.1.28) in the tissue. The enzyme activity was invers...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1982.tb04705.x
更新日期:1982-07-01 00:00:00
abstract::The dose-dependent effects of two putative gamma-aminobutyric acid (GABA)-ergic agonists, muscimol and 4,5,6,7-tetrahydroisoxazolo(4,5-e)-pyridin-3-ol (THIP), upon local cerebral glucose utilisation in 60 discrete regions of the CNS have been examined in conscious rats using the [14C]2-deoxyglucose quantitative autora...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1982.tb07937.x
更新日期:1982-09-01 00:00:00
abstract::The metabolism of L-tryptophan to the neuroactive kynurenine pathway metabolites, L-kynurenine, kynurenate and quinolinate, and the effects of two inhibitors of quinolinate synthesis (6-chlorotryptophan and 4-chloro-3-hydroxyanthranilate) were investigated by mass spectrometric assays in cultured cells and in vivo. Ce...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1995.65052217.x
更新日期:1995-11-01 00:00:00
abstract::Rat retina tissue contains relatively high amounts of GD3 in relation to ganglio-series gangliosides even in the adult stages. This was attributed in part to an activity ratio between the enzyme that converts GM3 to GD3 [sialytransferase II (ST-II)] and the enzyme that converts GM3 to GM2 [N-acetylgalactosaminyltransf...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1046/j.1471-4159.1995.64031274.x
更新日期:1995-03-01 00:00:00
abstract::1-[2-(4-Aminophenyl)ethyl]-4-(3-trifluoromethylphenyl)piperazine (PAPP) inhibits [3H]5-hydroxytryptamine (5-HT, serotonin) binding to 5-HT1A and 5-HT1B sites in rat brain with apparent equilibrium dissociation constants (KD) of 2.9 and 328 nM, respectively. [3H]PAPP was synthesized, its binding to central serotonin re...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1986.tb12926.x
更新日期:1986-01-01 00:00:00
abstract::Most physiological processes in mammals are synchronized to the daily light:dark cycle by a circadian clock located in the hypothalamic suprachiasmatic nucleus. Signal transduction of light-induced phase advances of the clock is mediated through a neuronal nitric oxide synthase-guanilyl cyclase pathway. We have employ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/jnc.12613
更新日期:2014-04-01 00:00:00
abstract::Expansion of CAG trinucleotide repeat within the coding region of several genes results in the production of proteins with expanded polyglutamine (PolyQ) stretch. The expression of these pathogenic proteins leads to PolyQ diseases, such as Huntington's disease or several types of spinocerebellar ataxias. This family o...
journal_title:Journal of neurochemistry
pub_type: 杂志文章,评审
doi:10.1111/j.1471-4159.2009.06302.x
更新日期:2009-09-01 00:00:00
abstract::Three forms of acetylcholinesterase (AChE) have been reported: the 4S, 10S, and 16S forms. It was suggested previously that 16S AChE is characteristic of the end-plate region; subsequently its presence has also been demonstrated in sciatic nerve, vagus nerve, several nerve trunks, cardiac atria, and distal ileum of ra...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1982.tb10882.x
更新日期:1982-01-01 00:00:00
abstract::Fingolimod, a sphingosine-1-phosphate receptor (S1PR) agonist, is clinically available to treat multiple sclerosis and is showing promise in treating stroke. We investigated if fingolimod provides long-term protection from experimental neonatal germinal matrix hemorrhage (GMH), aiming to support a potential mechanism ...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/jnc.13946
更新日期:2017-03-01 00:00:00
abstract::Chick imprinting behavior is a good model for the study of learning and memory. Imprinting object is recognized and processed in the visual wulst, and the memory is stored in the intermediate medial mesopallium in the dorsal pallium of the telencephalon. We identified chicken cholecystokinin (CCK)-expressing cells loc...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.2007.04733.x
更新日期:2007-09-01 00:00:00
abstract::This Editorial highlights an article in the current issue by Tapia-Rojas and Inestrosa suggesting that attenuation of Wnt signalling may be a triggering factor for the pathogenesis of Alzheimer disease (AD) in the J20 mouse model of AD. Their study utilises Wnt signalling inhibitors that operate at different points in...
journal_title:Journal of neurochemistry
pub_type: 评论,社论
doi:10.1111/jnc.14276
更新日期:2018-02-01 00:00:00
abstract::Near total inhibition of brain adenosine deaminase (ADA) activity in rats injected with the potent ADA inhibitor 2'-deoxycoformycin (DCF) was previously shown to reduce enzyme activity for up to 50 days during which time the enzyme exhibited reduced sensitivity to in vivo inhibition by DCF. Here, we investigated the b...
journal_title:Journal of neurochemistry
pub_type: 杂志文章
doi:10.1111/j.1471-4159.1992.tb09739.x
更新日期:1992-02-01 00:00:00