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Hua Su et al.
American journal of physiology. Renal physiology, 305(12), F1775-F1782 (2013-10-18)
Regulation of urea transporter UT-A1 in the kidney is important for the urinary concentrating mechanism. We previously reported that activation of the cAMP/PKA pathway by forskolin (FSK) leads to UT-A1 ubiquitination, endocytosis, and degradation. In this study, we discovered that
Yi-Chun Kuo et al.
Scientific reports, 8(1), 10477-10477 (2018-07-12)
FARP1 is a multi-domain protein that is involved in regulating neuronal development through interacting with cell surface proteins such as class A Plexins and SynCAM 1. The N-terminal FERM domain in FARP1 is known to both promote membrane localization and
Draxin alters laminin organization during basement membrane remodeling to control cranial neural crest EMT.
Hutchins, et al.
Developmental Biology, 446, 151-158 (2020)
Satoko Iwahori et al.
Virology, 512, 95-103 (2017-09-26)
Human cytomegalovirus (HCMV) encodes a viral cyclin-dependent kinase (v-CDK), the UL97 protein. UL97 phosphorylates Rb, p107 and p130, thereby inactivating all three retinoblastoma (Rb) family members. Rb proteins function through regulating the activity of transcription factors to which they bind.
Satoko Iwahori et al.
The Journal of biological chemistry, 292(16), 6583-6599 (2017-03-16)
The human cytomegalovirus (HCMV)-encoded viral cyclin-dependent kinase (v-CDK) UL97 phosphorylates the retinoblastoma (Rb) tumor suppressor. Here, we identify the other Rb family members p107 and p130 as novel targets of UL97. UL97 phosphorylates p107 and p130 thereby inhibiting their ability
Alison K Gillingham et al.
eLife, 8 (2019-07-12)
The GTPases of the Ras superfamily regulate cell growth, membrane traffic and the cytoskeleton, and a wide range of diseases are caused by mutations in particular members. They function as switchable landmarks with the active GTP-bound form recruiting to the
Sara L Poulsen et al.
The Journal of cell biology, 201(6), 797-807 (2013-06-12)
Protein modifications by ubiquitin and small ubiquitin-like modifier (SUMO) play key roles in cellular signaling pathways. SUMO-targeted ubiquitin ligases (STUbLs) directly couple these modifications by selectively recognizing SUMOylated target proteins through SUMO-interacting motifs (SIMs), promoting their K48-linked ubiquitylation and degradation.
Daniel Martin et al.
The Journal of biological chemistry, 289(44), 30625-30634 (2014-09-06)
It is well known that atherosclerosis occurs geographically at branch points where disturbed flow predisposes to the development of plaque via triggering of oxidative stress and inflammatory reactions. In this study, we found that disturbed flow activated anti-oxidative reactions via
Zhiwei Luo et al.
Cell regeneration (London, England), 8(1), 21-29 (2019-06-18)
Class IIa histone deacetylases (HDACs) are a subfamily of HDACs with important functions in development and adult tissue homeostasis. As opposed to other HDACs, they lack catalytic function and bind transcription factors to recruit transcriptional co-regulators, mostly co-repressors such as
Liang Qin et al.
The Journal of biological chemistry, 291(30), 15564-15574 (2016-05-27)
The anaphase-promoting complex, or cyclosome (APC/C), is a ubiquitin ligase that selectively targets proteins for degradation in mitosis and the G1 phase and is an important component of the eukaryotic cell cycle control system. How the APC/C specifically recognizes its
Bradford H Casey et al.
Genome research, 28(4), 484-496 (2018-03-04)
During development, transcription factors select distinct gene programs, providing the necessary regulatory complexity for temporal and tissue-specific gene expression. How related factors retain specificity, especially when they recognize the same DNA motifs, is not understood. We address this paradox using
Michal P Wandel et al.
Cell host & microbe, 22(4), 507-518 (2017-10-13)
Interferon exposure boosts cell-autonomous immunity for more efficient pathogen control. But how interferon-enhanced immunity protects the cytosol against bacteria and how professionally cytosol-dwelling bacteria avoid clearance are insufficiently understood. Here we demonstrate that the interferon-induced GTPase family of guanylate-binding proteins
Hironori Hojo et al.
Developmental cell, 37(3), 238-253 (2016-05-03)
In extant species, bone formation is restricted to vertebrate species. Sp7/Osterix is a key transcriptional determinant of bone-secreting osteoblasts. We performed Sp7 chromatin immunoprecipitation sequencing analysis identifying a large set of predicted osteoblast enhancers and validated a subset of these
Xiaoyun Ji et al.
Nature structural & molecular biology, 20(11), 1304-1309 (2013-10-22)
SAMHD1, a dNTP triphosphohydrolase (dNTPase), has a key role in human innate immunity. It inhibits infection of blood cells by retroviruses, including HIV, and prevents the development of the autoinflammatory Aicardi-Goutières syndrome (AGS). The inactive apo-SAMHD1 interconverts between monomers and
Tingting Li et al.
The Journal of clinical investigation, 129(8), 3310-3323 (2019-07-16)
Cytosolic arginine sensor for mTORC1 subunits 1 and 2 (CASTOR1 and CASTOR2) inhibit the mammalian target of rapamycin complex 1 (mTORC1) upon arginine deprivation. mTORC1 regulates cell proliferation, survival, and metabolism and is often dysregulated in cancers, indicating that cancer
Tristan T Eifler et al.
Molecular and cellular biology, 35(2), 468-478 (2014-11-12)
Transcriptional cyclin-dependent kinases (CDKs) regulate RNA polymerase II initiation and elongation as well as cotranscriptional mRNA processing. In this report, we describe an important role for CDK12 in the epidermal growth factor (EGF)-induced c-FOS proto-oncogene expression in mammalian cells. This
Jin Sun Choi et al.
Oncotarget, 5(20), 10084-10099 (2014-10-03)
HS-1-associated protein X-1 (HAX1) is a multi-functional protein which was first identified as a Hematopoietic cell specific Lyn Substrate 1 (HS1)-binding protein. Although the roles of HAX1 in apoptosis have been unraveled and HAX1 has been proposed to be involved
Seiji Ishii et al.
Nature communications, 8, 15157-15157 (2017-05-04)
Repetitive prenatal exposure to identical or similar doses of harmful agents results in highly variable and unpredictable negative effects on fetal brain development ranging in severity from high to little or none. However, the molecular and cellular basis of this
Laura C Bott et al.
Scientific reports, 6, 27703-27703 (2016-06-18)
Polyglutamine expansion in the androgen receptor (AR) causes spinal and bulbar muscular atrophy (SBMA), an X-linked neuromuscular disease that is fully manifest only in males. It has been suggested that proteins with expanded polyglutamine tracts impair ubiquitin-dependent proteolysis due to
Joo-Young Im et al.
Oncogenesis, 9(1), 1-1 (2020-01-05)
DNA damage-induced apoptosis suppressor (DDIAS) regulates cancer cell survival. Here we investigated the involvement of DDIAS in IL-6-mediated signaling to understand the mechanism underlying the role of DDIAS in lung cancer malignancy. We showed that DDIAS promotes tyrosine phosphorylation of
Jung-Yoon Yoo et al.
BMC cancer, 18(1), 605-605 (2018-05-31)
Aberrant hyperactivation of epithelial proliferation, AKT signaling, and association with unopposed estrogen (E2) exposure is the most common endometrial cancer dysfunction. In the normal uterus, progesterone (P4) inhibits proliferation by coordinating stromal-epithelial cross-talk, which we previously showed is mediated by
Jamie N Jackel et al.
Journal of virology, 90(16), 7529-7540 (2016-06-10)
In plants, RNA-directed DNA methylation (RdDM) employs small RNAs to target enzymes that methylate cytosine residues. Cytosine methylation and dimethylation of histone 3 lysine 9 (H3K9me2) are often linked. Together they condition an epigenetic defense that results in chromatin compaction
Constanza E Espada et al.
Journal of virology, 95(3) (2020-11-13)
Sterile alpha motif and HD domain-containing protein 1 (SAMHD1) restricts HIV-1 replication by limiting the intracellular deoxynucleoside triphosphate (dNTP) pool. SAMHD1 also suppresses the activation of NF-κB in response to viral infections and inflammatory stimuli. However, the mechanisms by which
Kelly A Miller et al.
Microbiology (Reading, England), 164(4), 540-550 (2018-03-01)
Shigella species cause diarrhoea by invading and spreading through the epithelial layer of the human colon. The infection triggers innate immune responses in the host that the bacterium combats by translocating into the host cell cytosol via a type 3
Mauro Sbroggiò et al.
FEBS letters, 582(13), 1788-1794 (2008-05-14)
Melusin is a mammalian muscle specific CHORD containing protein capable of activating signal transduction pathways leading to cardiomyocytes hypertrophy in response to mechanical stress. To define melusin function we searched for molecular partners possibly involved in melusin dependent signal transduction.
Pooneh Memar Ardestani et al.
Nucleus (Austin, Tex.), 3(5), 442-451 (2012-06-30)
Sirtuin 6 (Sirt6), a mammalian Sir2 (silent information regulator-2) ortholog, is an NAD (+) -dependent histone deacetylase that modulates chromatin structure and genomic stability. Sirt6 knockout cells demonstrate genomic instability, and a deficiency of Sirt6 in mice leads to an
Yi Shi et al.
PLoS biology, 18(12), e3000991-e3000991 (2020-12-23)
Hypoxia-induced angiogenesis maintains tissue oxygen supply and protects against ischemia but also enhances tumor progression and malignancy. This is mediated through activation of transcription factors like hypoxia-inducible factor 1 (HIF-1) and c-Myc, yet the impact of hypoxia on negative regulators
Yuping Chen et al.
Science advances, 6(1), eaax5819-eaax5819 (2020-01-09)
Autophagy is an evolutionarily conserved catabolic process, which plays a vital role in removing misfolded proteins and clearing damaged organelles to maintain internal environment homeostasis. Here, we uncovered the checkpoint kinase 2 (CHK2)-FOXK (FOXK1 and FOXK2) axis playing an important
Gina Lee et al.
Developmental biology, 356(2), 588-597 (2011-07-07)
Heterotaxy characterized by abnormal left-right body asymmetry causes diverse congenital anomalies. Organ rotation is a crucial developmental process to establish the left-right patterning during animal development. However, the molecular basis of how organ rotation is regulated is poorly understood. Here
Mari E Strand et al.
The FEBS journal, 280(10), 2228-2247 (2013-02-05)
Sustained pressure overload induces heart failure, the main cause of mortality in the Western world. Increased understanding of the underlying molecular mechanisms is essential to improve heart failure treatment. Despite important functions in other tissues, cardiac proteoglycans have received little
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