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https://www.readbyqxmd.com/read/27921211/helix-o-modulates-voltage-dependency-of-clc-1
#1
Ju Yong Seong, Kotdaji Ha, Chansik Hong, Jongyun Myeong, Hyun-Ho Lim, Dongki Yang, Insuk So
The chloride channel (CLC) family of proteins consists of channels and transporters that share similarities in architecture and play essential roles in physiological functions. Among the CLC family, CLC-1 channels have the representative homodimeric double-barreled structure carrying two gating processes. One is protopore gating that acts on each pore independently by glutamate residue (Eext). The other is common gating that closes both pores simultaneously in association with large conformational changes across each subunit...
December 5, 2016: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/27921025/prostate-specific-antigen-rising-in-iranian-men-in-correlation-with-body-mass-index-fasting-blood-sugar-and-blood-lipid-profile
#2
Davood Arab, Arash Ardestani Zadeh, Majid Mirmohammadkhani, Azadeh Beiglarzadeh
BACKGROUND: Prostate-specific antigen (PSA) is a serine protease that is secreted by prostate cells and it is useful as a tumor marker for prostate cancer. OBJECTIVES: In this study, the relationship between some of metabolic factors and serum PSA level was investigated. MATERIALS AND METHODS: In this cross-sectional study, patients with urinary symptoms or for screening of the prostate cancer (after 50 years of age or 40 years with a family history of prostate cancer), were evaluated...
October 2016: Journal of Nephropathology
https://www.readbyqxmd.com/read/27920887/preliminary-study-on-cost-effective-l-tryptophan-production-from-indole-and-l-serine-by-e-coli-cells
#3
Tahereh Sadeghiyan-Rizi, Jamshid Fooladi, Sima Sadrai
BACKGROUND: L-tryptophan is used widespread in the pharmaceutical industry. The majority of L-Trp production depends on microbial processes that produce L-tryptophan from indole and L-serine. These processes are very costly due to the costs of precursors, especially L-serine. Use of inexpensive substitutions as the L-serine source of L-tryptophan production enables us to reach a cost-effective process. In this paper, effect of Triton X-100 on L-Trp production and the ability to use Iranian cane molasses as inexpensive L-serine source was investigated...
October 2016: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/27920779/functional-versatility-of-agy-serine-codons-in-immunoglobulin-variable-region-genes
#4
Thiago Detanico, Matthew Phillips, Lawrence J Wysocki
In systemic autoimmunity, autoantibodies directed against nuclear antigens (Ags) often arise by somatic hypermutation (SHM) that converts AGT and AGC (AGY) Ser codons into Arg codons. This can occur by three different single-base changes. Curiously, AGY Ser codons are far more abundant in complementarity-determining regions (CDRs) of IgV-region genes than expected for random codon use or from species-specific codon frequency data. CDR AGY codons are also more abundant than TCN Ser codons. We show that these trends hold even in cartilaginous fishes...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27920257/pkr-mediates-inflammatory-response-induced-by-hyperosmotic-stress
#5
Kenneth T Farabaugh, Mithu Majumder, Bo-Jhih Guan, Raul Jobava, Jing Wu, Dawid Krokowski, Xing-Huang Gao, Andrew Schuster, Michelle Longworth, Edward D Chan, Massimiliano Bianchi, Madhusudan Dey, Antonis E Koromilas, Parameswaran Ramakrishnan, Maria Hatzoglou
High extracellular osmolarity results in a switch from an adaptive to an inflammatory gene expression program. We show that hyperosmotic stress activates the protein kinase R (PKR) independently of its RNA binding domain. In turn, PKR stimulated nuclear accumulation of nuclear factor-κB (NF-κB) p65 species phosphorylated at serine-536, which was paralleled by the induction of a subset of inflammatory NF-κB p65- responsive genes including inducible nitric oxide synthase (iNOS), IL-6, and IL-1β. The PKR mediated-hyperinduction of iNOS decreased cell survival in mouse embryonic fibroblasts via mechanisms involving nitric oxide (NO) synthesis and post-translational modification of proteins...
December 5, 2016: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/27920254/casein-kinase-2-is-linked-to-stress-granule-dynamics-through-phosphorylation-of-the-stress-granule-nucleating-protein-g3bp1
#6
Lucas C Reineke, Wei-Chih Tsai, Antrix Jain, Jason T Kaelber, Sung Yun Jung, Richard E Lloyd
Stress granules are large macromolecular aggregates that contain translation initiation complexes and mRNAs. Stress granule formation coincides with translational repression, and stress granules actively signal to mediate cell fate decisions by a) signaling to the translation apparatus to maintain translational repression, b) mount various transcriptional responses including innate immunity, and c) to repress apoptosis. Previous work showed G3BP1 is phosphorylated at serine 149, which regulates G3BP1 oligomerization, stress granule assembly, and RNase activity intrinsic to G3BP1...
December 5, 2016: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/27919968/overexpression-of-pbk-topk-contributes-to-tumor-development-and-poor-outcome-of-esophageal-squamous-cell-carcinoma
#7
Takuma Ohashi, Shuhei Komatsu, Daisuke Ichikawa, Mahito Miyamae, Wataru Okajima, Taisuke Imamura, Jun Kiuchi, Keiji Nishibeppu, Toshiyuki Kosuga, Hirotaka Konishi, Atsushi Shiozaki, Hitoshi Fujiwara, Kazuma Okamoto, Hitoshi Tsuda, Eigo Otsuji
BACKGROUND: PDZ-binding kinase/T-cell-originated protein kinase (PBK/TOPK) is a serine-threonine kinase and overexpressed in various types of cancer. PBK/TOPK is associated with tumor cell development and progression through suppression of p53 function. In this study, we tested whether PBK acts as a cancer-promoting factor by being overexpressed in esophageal squamous cell carcinoma (ESCC). MATERIALS AND METHODS: We analyzed PBK/TOPK expression in 15 ESCC cell lines, and 54 primary ESCC tumors that were curatively resected between 1994 and 2007...
December 2016: Anticancer Research
https://www.readbyqxmd.com/read/27919956/expression-patterns-of-growth-and-survival-genes-with-prognostic-implications-in-advanced-pancreatic-cancer
#8
Dimitrios Pectasides, Vasiliki Kotoula, George Papaxoinis, Zoi Alexopoulou, Christos Dervenis, Epaminontas Samantas, Kleo Papaparaskeva, Elpida Charalambous, Chrysoula Gkakou, Christos Agalianos, Konstantine T Kalogeras, George Pentheroudakis, George Fountzilas
AIM: The aim of this study was to evaluate the mRNA expression pattern of growth- and survival-related genes and assess their prognostic significance in patients with advanced pancreatic cancer. PATIENTS AND METHODS: In total, 98 patients were included in this retrospective translational research study and were evaluated for Kirsten rat sarcoma viral oncogene homolog (KRAS) mutational status, and v-akt murine thymoma viral oncogene homolog 1 (AKT1), AKT serine/threonine kinase 2 (AKT2), AKT serine/threonine kinase 3 (AKT3), cyclin D1 (CCND1), epidermal growth factor receptor (EGFR), mitogen-activated protein kinase 1 (MAPK1), hepatocellular growth factor receptor (MET), avian myelomatosis viral oncogene homolog (MYC), nuclear factor kappa B subunit 1 (NFKb1), phosphatase and tensin homolog (PTEN) and mechanistic target of rapamycin (FRAP1) genes mRNA expression...
December 2016: Anticancer Research
https://www.readbyqxmd.com/read/27919681/mutational-analysis-of-kex2-recognition-sites-and-a-disulfide-bond-in-tannase-from-aspergillus-oryzae
#9
Takuya Koseki, Motohiro Otsuka, Toshiyuki Mizuno, Yoshihito Shiono
Aspergillus oryzae tannase (AoTanA), which contains two Kex2 recognition sites at positions Arg311 and Arg316, consists of two subunits that are generated by the cleavage of tannase gene product by the Kex2 protease. Based on the crystal structure of feruloyl esterase from Aspergillus oryzae (AoFaeB), which has been classified as a member of the fungal tannase family, the catalytic triad residues of AoTanA are predicted to be Ser195, Asp455, and His501, with the serine and histidine residues brought together by a disulfide bond of the neighboring cysteines, Cys194 and Cys502...
December 2, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27919304/green-tea-extract-intake-during-lactation-modified-cardiac-macrophage-infiltration-and-amp-activated-protein-kinase-phosphorylation-in-weanling-rats-from-undernourished-mother-during-gestation-and-lactation
#10
E Matsumoto, S Kataoka, Y Mukai, M Sato, S Sato
Maternal dietary restriction is often associated with cardiovascular disease in offspring. The aim of this study was to investigate the effect of green tea extract (GTE) intake during lactation on macrophage infiltration, and activation of adenosine monophosphate (AMP)-activated protein kinase (AMPK) and serine-threonine kinase Akt (Akt) in the hearts of weanlings exposed to maternal dietary protein restriction. Pregnant Wistar rats were fed control (C) or low-protein diets (LP) throughout gestation. Following delivery, the dams received a control or a GTE-containing control diet during lactation: control diet during gestation and lactation (CC), low-protein diet during gestation and lactation (LPC), low-protein diet during gestation and 0...
December 6, 2016: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/27919290/ccdc88a-a-prognostic-factor-for-human-pancreatic-cancers-promotes-the-motility-and-invasiveness-of-pancreatic-cancer-cells
#11
Aki Tanouchi, Keisuke Taniuchi, Mutsuo Furihata, Seiji Naganuma, Ken Dabanaka, Masashi Kimura, Ryohei Watanabe, Takuhiro Kohsaki, Takahiro Shimizu, Motoaki Saito, Kazuhiro Hanazaki, Toshiji Saibara
BACKGROUND: Coiled-Coil Domain Containing 88A (CCDC88A) was identified as a substrate of the serine/threonine kinase Akt that is capable of binding to the actin cytoskeleton. The aim of this study was to investigate the potential role of CCDC88A in the migration and invasiveness of pancreatic ductal adenocarcinoma (PDAC) cells. METHODS: Immunohistochemistry was performed to determine whether high CCDC88A expression in human PDAC tissues is correlated with poor prognosis...
December 5, 2016: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/27918433/protein-phosphatase-1-regulates-expression-of-neuregulin-1
#12
Tatiana Ammosova, Kareem Washington, Jamie Rotimi, Namita Kumari, Kahli A Smith, Xiaomei Niu, Marina Jerebtsova, Sergei Nekhai
Protein phosphatase 1 (PP1), a cellular serine/threonine phosphatase, is targeted to cellular promoters by its major regulatory subunits, PP1 nuclear targeting subunit, nuclear inhibitor of PP1 (NIPP1) and RepoMan. PP1 is also targeted to RNA polymerase II (RNAPII) by NIPP1 where it can dephosphorylate RNAPII and cycle-dependent kinase 9 (CDK9). Here, we show that treatment of cells with a small molecule activator of PP1 increases the abundance of a neuregulin-1 (NRG-1)-derived peptide. NRG-1 mRNA and protein levels were increased in the cells stably or transiently expressing mutant NIPP1 (mNIPP1) that does not bind PP1, but not in the cells expressing NIPP1...
December 2, 2016: Biology
https://www.readbyqxmd.com/read/27917832/1-45%C3%A2-%C3%A3-resolution-structure-of-srpn18-from-the-malaria-vector-anopheles-gambiae
#13
David A Meekins, Xin Zhang, Kevin P Battaile, Scott Lovell, Kristin Michel
Serine protease inhibitors (serpins) in insects function within development, wound healing and immunity. The genome of the African malaria vector, Anopheles gambiae, encodes 23 distinct serpin proteins, several of which are implicated in disease-relevant physiological responses. A. gambiae serpin 18 (SRPN18) was previously categorized as non-inhibitory based on the sequence of its reactive-center loop (RCL), a region responsible for targeting and initiating protease inhibition. The crystal structure of A. gambiae SRPN18 was determined to a resolution of 1...
December 1, 2016: Acta Crystallographica. Section F, Structural Biology Communications
https://www.readbyqxmd.com/read/27917812/nasobiliary-drainage-for%C3%A2-benign-recurrent-intrahepatic-cholestasis%C3%A2-in-patients-refractory-to-standard-therapy
#14
Tolga Yakar, Mehmet Demir, Huseyin S Gokturk, Ayse G Unler Kanat, Alper G Parlakgumus, Birol Ozer, Ender Serin
PURPOSE: Benign recurrent intrahepatic cholestasis (BRIC) is characterized by episodic cholestasis and pruritus without anatomical obstruction. The aim of this study was to evaluate the safety and efficacy of nasobiliary drainage (NBD) in patients with BRIC refractory to medical therapy and to determine whether the use of NBD prolongs the episode duration. METHODS: This was a multicenter retrospective study consisting of 33 patients suffering from BRIC. All patients were administrated medical treatment and 16 patients who were refractory to standard medical therapies improved on treatment with temporary endoscopic NBD...
December 1, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/27917793/high-dose-oral-furosemide-with-salt-ingestion-in-the-treatment-of-refractory-ascites-of-liver-cirrhosis
#15
Tolga Yakar, Mehmet Demir, Ozlem Dogan, Alper Parlakgumus, Birol Ozer, Ender Serin
PURPOSE: We aimed to evaluate and compare the efficacy and safety of high-dose furosemide+salt orally by comparing HSS+ furosemide (i.v.) and repeated paracentesis in patients with RA. METHODS: This was a prospective study of 78 cirrhotic patients with RA, randomized into three groups: Group A (n= 25) i.v. furosemide (200-300 mg bid) and 3% hypotonic saline solution (HSS) (once or twice a day); Group B (n= 26) oral furosemide tablets (360-520 mg bid) and salt (2...
December 1, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/27917189/first-resistance-mechanisms-characterization-in-glyphosate-resistant-leptochloa-virgata
#16
Ricardo Alcántara-de la Cruz, Antonia M Rojano-Delgado, María J Giménez, Hugo E Cruz-Hipolito, José A Domínguez-Valenzuela, Francisco Barro, Rafael De Prado
Leptochloa virgata (L.) P. Beauv. is an annual weed common in citrus groves in the states of Puebla and Veracruz, Mexico limiting their production. Since 2010, several L. virgata populations were identified as being resistant to glyphosate, but studies of their resistance mechanisms developed by this species have been conducted. In this work, three glyphosate-resistant populations (R8, R14, and R15) collected in citrus orchards from Mexico, were used to study their resistance mechanisms comparing them to one susceptible population (S)...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27916875/proteinase-activated-receptor-2-is-a-novel-regulator-of-tgf-%C3%AE-signaling-in-pancreatic-cancer
#17
REVIEW
David Witte, Franziska Zeeh, Thomas Gädeken, Frank Gieseler, Bernhard H Rauch, Utz Settmacher, Roland Kaufmann, Hendrik Lehnert, Hendrik Ungefroren
TGF-β has a dual role in tumorigenesis, acting as a tumor suppressor in normal cells and in the early stages of tumor development while promoting carcinogenesis and metastasis in advanced tumor stages. The final outcome of the TGF-β response is determined by cell-autonomous mechanisms and genetic alterations such as genomic instability and somatic mutations, but also by a plethora of external signals derived from the tumor microenvironment, such as cell-to-cell interactions, growth factors and extracellular matrix proteins and proteolytic enzymes...
November 30, 2016: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/27916703/oogenesis_pred-a-sequence-based-method-for-predicting-oogenesis-proteins-by-six-different-modes-of-chou-s-pseudo-amino-acid-composition
#18
Maryam Rahimi, Mohammad Reza Bakhtiarizadeh, Abdollah Mohammadi-Sangcheshmeh
Regarding to critical roles of oogenesis in formation of ova or unfertilized eggs from the oogonia by mitotic division and subsequent differentiation, the identification of oogenesis-related proteins is of great interest. However, the experimental determination of proteins involved in oogenesis is expensive, time consuming and labor-intensive. Therefore, a new powerful discriminating model is indispensable for classifying oogenesis/non-oogenesis-related proteins with high accuracy and precision. Hereby, for the first time we developed a support vector machine based oogenesis protein prediction method which differentiates oogenesis from non-oogenesis proteins...
December 1, 2016: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/27916294/high-expression-of-phgdh-predicts-poor-prognosis-in-non-small-cell-lung-cancer
#19
Jinhong Zhu, Jianqun Ma, Xudong Wang, Tianjiao Ma, Shu Zhang, Wei Wang, Xiaoyu Zhou, Jiahai Shi
Tumors have exceptionally high demands for energy and anabolism because of their rapid growth. The de novo serine synthesis pathway initiated by phosphoglycerate dehydrogenase (PHGDH) has been recognized as a hallmark of metabolic adaption in carcinogenesis. The oncogenic role and prognostic value of PHGDH have been investigated in multiple cancer types, including breast cancer, melanoma, cervical cancer, and colon cancer. Due to the importance of PHGDH in cancer, we attempted to determine the clinical significance of PHGDH in 319 patients with non-small cell lung cancer (NSCLC)...
December 2016: Translational Oncology
https://www.readbyqxmd.com/read/27915333/prss8-is-downregulated-and-suppresses-tumour-growth-and-metastases-in-hepatocellular-carcinoma
#20
Li Zhang, Guozhan Jia, Binya Shi, Guanqun Ge, Hongbin Duan, Yunsheng Yang
BACKGROUND: Protease serine 8 (PRSS8), a trypsin-like serine peptidase, has been shown to function as a tumour suppressor in various malignancies. The present study aimed to investigate the expression pattern, prognostic value and the biological role of PRSS8 in human hepatocellular carcinoma (HCC). METHODS: PRSS8 expression in 106 HCC surgical specimens was examined by Real-time polymerase chain reaction (PCR) and immunohistochemistry, and its clinical significance was analysed...
December 5, 2016: Cellular Physiology and Biochemistry
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