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21.
Binding of the Atg1/ULK1 kinase to the ubiquitin-like protein Atg8 regulates autophagy 总被引:1,自引:0,他引:1
C Kraft M Kijanska E Kalie E Siergiejuk SS Lee G Semplicio I Stoffel A Brezovich M Verma I Hansmann G Ammerer K Hofmann S Tooze M Peter 《The EMBO journal》2012,31(18):3691-3703
Autophagy is an intracellular trafficking pathway sequestering cytoplasm and delivering excess and damaged cargo to the vacuole for degradation. The Atg1/ULK1 kinase is an essential component of the core autophagy machinery possibly activated by binding to Atg13 upon starvation. Indeed, we found that Atg13 directly binds Atg1, and specific Atg13 mutations abolishing this interaction interfere with Atg1 function in vivo. Surprisingly, Atg13 binding to Atg1 is constitutive and not altered by nutrient conditions or treatment with the Target of rapamycin complex 1 (TORC1)-inhibitor rapamycin. We identify Atg8 as a novel regulator of Atg1/ULK1, which directly binds Atg1/ULK1 in a LC3-interaction region (LIR)-dependent manner. Molecular analysis revealed that Atg13 and Atg8 cooperate at different steps to regulate Atg1 function. Atg8 targets Atg1/ULK1 to autophagosomes, where it may promote autophagosome maturation and/or fusion with vacuoles/lysosomes. Moreover, Atg8 binding triggers vacuolar degradation of the Atg1-Atg13 complex in yeast, thereby coupling Atg1 activity to autophagic flux. Together, these findings define a conserved step in autophagy regulation in yeast and mammals and expand the known functions of LIR-dependent Atg8 targets to include spatial regulation of the Atg1/ULK1 kinase. 相似文献
22.
Nina Peitsaro Zydrune Polianskyte Jarno Tuimala Isabella Pörn-Ares Julius Liobikas Oliver Speer Dan Lindholm James Thompson Ove Eriksson 《BMC evolutionary biology》2008,8(1):26
Background
Bacterial penicillin-binding proteins and β-lactamases (PBP-βLs) constitute a large family of serine proteases that perform essential functions in the synthesis and maintenance of peptidoglycan. Intriguingly, genes encoding PBP-βL homologs occur in many metazoan genomes including humans. The emerging role of LACTB, a mammalian mitochondrial PBP-βL homolog, in metabolic signaling prompted us to investigate the evolutionary history of metazoan PBP-βL proteins. 相似文献23.
Schepelmann M Molcan L Uhrova H Zeman M Ellinger I 《Cellular and molecular neurobiology》2011,31(8):1257-1265
Melatonin is involved in blood pressure modulation in rats and humans. Some of the effects of melatonin are presumably mediated
via two G-protein-coupled receptors (MT1 and MT2), but the distribution of MT1 and MT2 in the cardiovascular system remains to be explored comprehensively. We investigated the expression of both the receptors
in the rat aorta on mRNA level by RT-PCR and real time RT-PCR as well as on protein level via western blotting and immunofluorescence
microscopy. We verified MT1 mRNA expression in the rat aorta and demonstrated the absence of MT2 mRNA in this vessel type. MT1 receptors were confirmed also at the protein level, and surprisingly they were preferentially localized to the tunica adventitia.
Since no daily changes in MT1 mRNA expression were detected, we suppose that the circadian changes in circulating melatonin concentrations are sufficient
to mediate circadian effects of melatonin in the aorta. The localization of MT1 in the tunica adventitia suggests an influence of melatonin on vasa vasorum function and signal transduction in the aorta
wall. 相似文献
24.
25.
Isabella?C.?Felli Roberta?Pierattelli Steffen?J.?Glaser Burkhard?LuyEmail author 《Journal of biomolecular NMR》2009,43(3):187-196
Isotropic mixing sequences are one of the key methods to achieve efficient coherence transfer. Among them, the MOCCA-XY16,
which keeps the magnetization longitudinal for a significant amount of time, is characterised by favourable relaxation properties.
We show here that its adapted version is particularly suited for carbonyl–carbonyl correlations in 13C direct detection NMR experiments. 相似文献
26.
27.
28.
Ribeiro Brbhara Isabella Oenning Braghin Louizi de Souza Magalhes Lansac-Tha Fernando Miranda Bomfim Francieli Ftima Almeida Bia A. Bonecker Cludia Costa Lansac-Tha Fbio Amdeo 《Hydrobiologia》2022,849(14):3135-3147
Hydrobiologia - Beta diversity is the variability in species composition among sampling units for a given area and can be influenced by several environmental drivers, including environmental... 相似文献
29.
DQ α and β RFLP reveals the composition of the DQ molecule recognized by T-cell clones 总被引:2,自引:0,他引:2
Sharon Rosenshine Isabella Cascino Adriana Zeevi René J. Duquesnoy Massimo Trucco 《Immunogenetics》1986,23(3):187-196
Pst I RFLP, revealed with DQ
and DQ
probes, was compared with Taq I RFLP using a panel of DR-homozygous cell lines and HLA-typed family members. Taq I patterns, characteristic for each DR-associated DQ and allelic forms, were recognized in the homozygous state and then proven to segregate in the heterozygous members of informative families. The presence of both specific and chains was found to be necessary to form the type of DQ molecule specifically recognized by two alloreactive T-cell clones. Particular and associations also seem to be responsible for some Dw splits of the DRw6-positive cells. Taq I RFLP analysis may be more complex than the Pst I analysis, but is certainly more informative and complete, considering the type of information we were seeking by performing these types of experiments.Abbreviations used in this paper BSA
bovine serum albumin
- GLO
glyoxalase
- kb
kilobase(s)
- LCL
lymphoblastoid cell line
- MHC
major histocompatibility complex
- PBL
peripheral blood lymphocyte
- PLT
primed lymphocyte test
- RFLP
restriction fragment length polymorphism
- SDS
sodium dodecyl sulfate
- SSC
standard sodium citrate
- SSCP
sodium, sodium citrate, sodium phosphate
- TBE
Tris-borate, boric acid, ethylenediaminetetraacetate (EDTA)
- TCGF
T-cell growth factor 相似文献
30.
Zeynep Eroglu Sheri L. Holmen Qing Chen Nikhil I. Khushalani Ravi Amaravadi Reena Thomas Kamran A. Ahmed Hussein Tawbi Sunandana Chandra Joseph Markowitz Inna Smalley James K. C. Liu Yian Ann Chen Yana G. Najjar Florian A. Karreth Daniel Abate‐Daga Isabella C. Glitza Jeffrey A. Sosman Vernon K. Sondak Marcus Bosenberg Meenhard Herlyn Michael B. Atkins Harriet Kluger Kim Margolin Peter A. Forsyth Michael A. Davies Keiran S. M. Smalley 《Pigment cell & melanoma research》2019,32(3):458-469
In February 2018, the Melanoma Research Foundation and the Moffitt Cancer Center hosted the Second Summit on Melanoma Central Nervous System (CNS) Metastases in Tampa, Florida. In this white paper, we outline the current status of basic science, translational, and clinical research into melanoma brain metastasis development and therapeutic management. We further outline the important challenges that remain for the field and the critical barriers that need to be overcome for continued progress to be made in this clinically difficult area. 相似文献