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182 Newest Publications of Portland Press

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LRRK2 Dephosphorylation increases its ubiquitination.

05-May-2015 | Zhao J; Molitor T; Langston J; Nichols R, Biochemical Journal, 2015

Activating mutations in the LRRK2 gene are the most common cause of inherited Parkinson’s disease (PD). LRRK2 is phosphorylated on a cluster of phosphosites including Ser910, 935, 955 and 973, which are dephosphorylated in several PD-related LRRK2 mutants [N1347H, R1441C/G, Y1699C and I2020T] ...

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Lopimune -Induced Mitochondrial Toxicity is attenuated by increased uncoupling protein - 2 level in treated mouse hepatocyes

13-Apr-2015 | El Hoss S; Bahr G; Echtay K, Biochemical Journal, 2015

Though protease inhibitor lopimune has proven to be effective, no studies have examined the side effects of lopimune on mitochondrial bioenergetics in hepatocytes. The objective of this study is to evaluate mitochondrial respiration, production of reactive oxygen species (ROS) and expression of ...

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Development of a new model system to dissect isoform specific Akt signaling in adipocytes

09-Apr-2015 | Kajno E; McGraw T; Gonzalez E, Biochemical Journal, 2015

Akt kinases are critical signal transducers mediating insulin action. Genetic studies revealed that Akt1 and Akt2 signaling differentially contribute to sustain lipid and glucose homeostasis; howeverAkt isoform-specific effectors remain elusive due to the lack of a suitable model system to ...

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Akt-Mediated regulation of antidepressant-sensitive serotonin transporter function, cell surface expression and phosphorylation

12-Mar-2015 | Rajamanickam J; Annamalai B; Rahbek-Clemmensen T; Sundaramurthy S; Gether U; Jayanthi L; Ramamoorthy S, Biochemical Journal, 2015

The serotonin (5-HT) transporter (SERT) controls serotonergic neurotransmission in the brain by rapid clearance of 5-HT from the synaptic cleft into presynaptic neurons. SERTs are primary target for antidepressants for therapeutic intervention of mood disorders. Our previous studies have ...

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Bioenergetic Programming Of Macrophages By The Apolipoprotein A-I Mimetic Peptide 4F

05-Mar-2015 | Datta G; Kramer P; Johnson M; Sawada H; Smythies L; Crossman D; Chacko B; Ballinger S; Westbrook D; Mayakonda P; Ana ..., Biochemical Journal, 2015

The apolipoprotein (apo)A-I mimetic peptide 4F favors the differentiation of human monocytes to an alternatively-activated M2 phenotype. The goal of the current study was to test whether the 4F-mediated differentiation of monocyte-derived macrophages (MDMs) requires the induction of an oxidative ...

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Iron alters cell survival in a mitochondria-dependent pathway in ovarian cancer cells

01-Mar-2015 | Bauckman K; Haller E; Taran N; Rockfield S; Ruiz-Rivera A; Nanjundan M, Biochemical Journal, 2015

The role of iron in the development of cancer remains unclear. We previously reported that iron reduces cell survival in a Ras/mitogen-activated protein kinase (MAPK)-dependent manner in ovarian cells; however, the underlying downstream pathway leading to reduced survival was unclear. Although ...

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The role of Ca2+ influx in endocytic vacuole formation in pancreatic acinar cells

01-Feb-2015 | Voronina S; Collier D; Chvanov M; Middlehurst B; Beckett AJ; Prior IA; Criddle DN; Begg M; Mikoshiba K; Sutton R; Te ..., Biochemical Journal, 2015

The inducers of acute pancreatitis trigger a prolonged increase in the cytosolic Ca2+ concentration ([Ca2+]c), which is responsible for the damage to and eventual death of pancreatic acinar cells. Vacuolization is an important indicator of pancreatic acinar cell damage. Furthermore, activation of ...

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The solution structure of the MANEC-type domain from Hepatocyte Growth Factor Activator Inhibitor 1 reveals an unexpected PAN/apple domain-type fold.

16-Dec-2014 | Hong Z; Nowakowski M; Spronk C; Petersen S; Andreasen P; Ko{z}mi{n}ski W; Mulder F; Jensen J, Biochemical Journal, 2014

A decade ago, a Motif at N-terminus with Eight-Cysteines or in short MANEC was defined as a new protein domain family. This domain is found exclusively in the N-terminus of >400 multi-domain type-1 transmembrane proteins from animals. Despite the large number of MANEC-containing proteins, only ...

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A context-independent N-glycan signal targets the misfolded extracellular domain of Arabidopsis STRUBBELIG to endoplasmic-reticulum-associated degradation

15-Dec-2014 | Huttner S; Veit C; Vavra U; Schoberer J; Dicker M; Maresch D; Altmann F; Strasser R, Biochemical Journal, 2014

N-glycosylation of proteins plays an important role in the determination of the fate of newly synthesized glycoproteins in the endoplasmic reticulum (ER). Specific oligosaccharide structures recruit molecular chaperones that promote folding or mannose-binding lectins that assist in the clearance ...

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The function of phosphatidylinositol 5-phosphate 4-kinase {gamma}(PI5P4K{gamma}) explored using a specific inhibitor that targets the PI5P binding site.

11-Dec-2014 | Clarke J; Giudici M; Burke J; Williams R; Maloney D; Marugan J; Irvine R, Biochemical Journal, 2014

NIH-12848 (NCGC00012848-02), a putative phosphatidylinositol-5-phosphate 4-kinase γ (PI5P4Kγ) inhibitor, was explored as a tool for investigating this enigmatic, low activity, lipid kinase. PI5P 4-kinase assays in vitro showed that NIH-12848 inhibited PI5P4Kγ with an IC50 of approximately 1μM but ...

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