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186 Newest Publications of Portland Press

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Deletion of phospholipase A{Less than}sub{Greater than}2{Less than}/sub{Greater than} group IV c induces apoptosis in rat mammary tumor cells by the nuclear factor-{kappa}B/lipocalin 2 pathway

27-May-2015 | Nanashima N; Yamada T; Shimizu T; Tsuchida S, Biochemical Journal, 2015

Although some phospholipase A2 forms, the initiator of the arachidonic acid cascade, contribute to carcinogenesis in many organs, the contribution of phospholipase A2 group IVc (Pla2g4c) remains to be clarified and the function of the enzyme in cancer development are unknown. The Hirosaki ...


Structural analysis of the di-adenylate cyclase reaction of DNA-integrity scanning protein A (DisA) and its inhibition by 3{'}-dATP

27-May-2015 | M{u}ller M; Deimling T; Hopfner K; Witte G, Biochemical Journal, 2015

The identification of the essential bacterial second messenger cyclic-di-AMP synthesized by the DNA-integrity scanning protein DisA opened up a new and emerging field in bacterial signaling. To further analyze the di-adenylate cyclase reaction catalyzed by the DAC domains of DisA, we crystallized ...


Engineered protease inhibitors based on sunflower trypsin inhibitor-1 (SFTI-1) provide insights into the role of sequence and conformation in Laskowski mechanism inhibition

22-May-2015 | De Veer S; Swedberg J; Akcan M; Rosengren K; Brattsand M; Craik D; Harris J, Biochemical Journal, 2015

Laskowski inhibitors regulate serine proteases by an intriguing mode of action that involves deceiving the protease into synthesising a peptide bond. Studies exploring naturally occurring Laskowski inhibitors have uncovered several structural features that convey the inhibitor’s resistance to ...


FOXO target gene CTDSP2 regulates cell cycle progression through Ras and p21{Less than}sup{Greater than}Cip1/Waf1{Less than}/sup{Greater than}

20-May-2015 | Kloet D; Polderman P; Eijkelenboom A; Smits L; Van Triest M; Van Den Berg M; Groot Koerkamp M; Van Leenen D; Lijnzaa ..., Biochemical Journal, 2015

Activity of Forkhead box O (FOXO) transcription factors is inhibited by growth factor-PI3K-protein kinase B (PKB)/AKT signalling to control a variety of cellular processes including cell cycle progression. Through comparative analysis of a number of microarray datasets we identified a set of ...


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] ...


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 ...


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 ...


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 ...


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 ...


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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