Abstract：
:Protein splicing catalyzed by inteins utilizes many different combinations of amino-acid types at active sites. Inteins have been classified into three classes based on their characteristic sequences. We investigated the structural basis of the protein splicing mechanism of class 3 inteins by determining crystal structures of variants of a class 3 intein from Mycobacterium chimaera and molecular dynamics simulations, which suggested that the class 3 intein utilizes a different splicing mechanism from that of class 1 and 2 inteins. The class 3 intein uses a bond cleavage strategy reminiscent of proteases but share the same Hedgehog/INTein (HINT) fold of other intein classes. Engineering of class 3 inteins from a class 1 intein indicated that a class 3 intein would unlikely evolve directly from a class 1 or 2 intein. The HINT fold appears as structural and functional solution for trans-peptidyl and trans-esterification reactions commonly exploited by diverse mechanisms using different combinations of amino-acid types for the active-site residues.
journal_name
Int J Mol Scijournal_title
International journal of molecular sciencesauthors
Beyer HM,Virtanen SI,Aranko AS,Mikula KM,Lountos GT,Wlodawer A,Ollila OHS,Iwaï Hdoi
10.3390/ijms21218367subject
Has Abstractpub_date
2020-11-07 00:00:00issue
21issn
1422-0067pii
ijms21218367journal_volume
21pub_type
杂志文章abstract：:Sarcopenia is the degenerative loss of skeletal muscle mass and function associated with aging and occurs in the absence of any underlying disease or condition. A comparison of the age-related molecular signaling signatures of different muscles has not previously been reported. In this study, we compared the age-relat...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21082862
更新日期：2020-04-20 00:00:00
abstract：:Agarwood is the fragrant resinous material mainly formed from species of Aquilaria. 2-(2-phenylethyl)chromones, especially the highly oxidized 5,6,7,8-tetrahydro-2-(2-phenylethyl)chromones, are the main representative compounds from agarwood. It is important to determine whether agarwood in trade is from cultivated tr...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms17050771
更新日期：2016-05-23 00:00:00
abstract：:The tumor microenvironment, which consists of fibroblasts, smooth muscle cells, endothelial cells, immune cells, epithelial cells, and extracellular matrices, plays a crucial role in tumor progression. Hepatic stellate cells (HSCs), a class of unique liver stromal cells, participate in immunomodulatory activities by i...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20205079
更新日期：2019-10-13 00:00:00
abstract：:Caspase-8 was originally identified as a central player of programmed cell death triggered by death receptor stimulation. In that context, its activity is tightly regulated through several mechanisms, with the best established being the expression of FLICE-like inhibitory protein (FLIP) family proteins and the Src-dep...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms19123798
更新日期：2018-11-29 00:00:00
abstract：:With the development of molecular cloning technology and the deep understanding of antibody engineering, there are diverse bispecific antibody formats from which to choose to pursue the optimal biological activity and clinical purpose. The single-chain-based bispecific antibodies usually bridge tumor cells with immune...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms18010048
更新日期：2016-12-28 00:00:00
abstract：:Chitosan-caseinate nanoparticles were synthesized by polyelectrolyte complex (PEC) formation. Caseinate is an anionic micellar nanocolloid in aqueous solutions, which association with the polycationic chitosan yielded polyelectrolyte complexes with caseinate cores surrounded by a chitosan corona. The pre-structuration...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21165602
更新日期：2020-08-05 00:00:00
abstract：:In response to extracellular stimuli, the Raf/MEK/extracellular signal-regulated kinase (ERK) pathway regulates diverse cellular processes. While mainly known as a mitogenic signaling pathway, the Raf/MEK/ERK pathway can mediate not only cell proliferation and survival but also cell cycle arrest and death in different...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21155436
更新日期：2020-07-30 00:00:00
abstract：:Obesity is a major risk for diabetes. Brown adipose tissue (BAT) mediates production of heat while white adipose tissue (WAT) function in the storage of fat. Roles of BAT in the treatment of obesity and related disorders warrants more investigation. Peroxisome proliferator activator receptor gamma (PPAR-γ) is the mast...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20071618
更新日期：2019-04-01 00:00:00
abstract：:A series of diketopyrrolopyrrole-based small molecules have been designed to explore their optical, electronic, and charge transport properties as organic solar cell(OSCs) materials. The calculation results showed that the designed molecules can lower the band gap and extend the absorption spectrum towards longer wave...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms160920326
更新日期：2015-08-27 00:00:00
abstract：:The mosquito-borne viral disease caused by the Dengue virus is an expanding global threat. Diagnosis in low-resource-settings and epidemiological surveillance urgently requires new immunoprobes for serological tests. Structure-based epitope prediction is an efficient method to design diagnostic peptidic probes able to...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20081921
更新日期：2019-04-18 00:00:00
abstract：:Two-component systems (TCS) in plants have evolved into a more complicated multi-step phosphorelay (MSP) pathway, which employs histidine kinases (HKs), histidine-containing phosphotransfer proteins (HPts), and response regulators (RRs) to regulate various aspects of plant growth and development. How plants perceive t...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21144898
更新日期：2020-07-11 00:00:00
abstract：:Though historically known as a toxic gas, hydrogen sulfide (H₂S) has displayed a new face as the third endogenous gaseous signaling molecule after nitric oxide (NO) and carbon monoxide (CO). Here in this review, we survey the role and therapeutic potential of H₂S in cisplatin-induced nephrotoxicity. Specifically, redu...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms20020313
更新日期：2019-01-14 00:00:00
abstract：:Liver injuries caused by the use of exogenous compounds such as drugs, herbs, and alcohol are commonly well diagnosed using laboratory tests, toxin analyses, or eventually reactive intermediates generated during metabolic degradation of the respective chemical in the liver and subject to covalent binding by target pro...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21010212
更新日期：2019-12-27 00:00:00
abstract：:The objective of the present study is to determine whether methoxychlor (MXC) exposure in adulthood affects rat Leydig cell regeneration and to compare its effects with estradiol (E2). Adult 90-day-old male Sprague-Dawley rats received ethane dimethane sulfonate (EDS) to eliminate the adult Leydig cell population. Sub...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms15057812
更新日期：2014-05-06 00:00:00
abstract：:Mucopolysaccharidosis type II is a lysosomal storage disorder caused by a deficiency of iduronate-2-sulfatase (IDS) and characterized by the accumulation of the primary storage substrate, glycosaminoglycans (GAGs). Understanding central nervous system (CNS) pathophysiology in neuronopathic MPS II (nMPS II) has been hi...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21155188
更新日期：2020-07-22 00:00:00
abstract：:Four new labdane-type diterpenoids: hedychicoronarin (1), peroxycoronarin D (2), 7β-hydroxycalcaratarin A (3), and (E)-7β-hydroxy-6-oxo-labda-8(17),12-diene-15,16-dial (4), have been isolated from the rhizomes of Hedychium coronarium, together with 13 known compounds (5-17). The structures of these new compounds were ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms140713063
更新日期：2013-06-25 00:00:00
abstract：:Pasting properties are important characteristics of barley starch from a processing standpoint. Many studies reported the close relationship between pasting properties and malting quality, especially malt extract. However, most conclusions were derived from the correlation between pasting properties and malting qualit...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms19113559
更新日期：2018-11-12 00:00:00
abstract：:Idiosyncratic drug-induced liver injury (DILI) is an underreported and underestimated adverse drug reaction. Information on the documented hepatotoxicity of drugs has recently been made available by a website that can be accessed in the public domain: LiverTox (http://livertox.nlm.nih.gov). According to critical analy...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms17020224
更新日期：2016-02-06 00:00:00
abstract：:Mature mRNA is generated by the 3' end cleavage and polyadenylation of its precursor pre-mRNA. Eukaryotic genes frequently have multiple polyadenylation sites, resulting in mRNA isoforms with different 3'-UTR lengths that often encode different C-terminal amino acid sequences. It is well-known that this form of post-t...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21186460
更新日期：2020-09-04 00:00:00
abstract：:Metformin is known to alleviate hepatosteatosis by inducing 5' adenosine monophosphate (AMP)-kinase-independent, sirtuin 1 (SIRT1)-mediated autophagy. Dysfunctional mitophagy in response to glucolipotoxicities might play an important role in hepatosteatosis. Here, we investigated the mechanism by which metformin induc...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms17010122
更新日期：2016-01-16 00:00:00
abstract：:Endoglucanases (EGLs) are important components of multienzyme cocktails used in the production of a wide variety of fine and bulk chemicals from lignocellulosic feedstocks. However, a low thermostability and the loss of catalytic performance of EGLs at industrially required temperatures limit their commercial applicat...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20071602
更新日期：2019-03-30 00:00:00
abstract：:This study evaluates the pre-treatment of cellulose from kenaf plant to yield sugar precursors for the production of ethanol or butanol for use as biofuel additives. In order to convert the crystalline cellulosic form to the amorphous form that can undergo enzymatic hydrolysis of the glycosidic bond to yield sugars, k...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms12031451
更新日期：2011-01-01 00:00:00
abstract：:Development of stimuli-responsive supramolecular micelles that enable high levels of well-controlled drug release in cancer cells remains a grand challenge. Here, we encapsulated the antitumor drug doxorubicin (DOX) and pro-photosensitizer 5-aminolevulinic acid (5-ALA) within adenine-functionalized supramolecular mice...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms22010154
更新日期：2020-12-25 00:00:00
abstract：:Mesenchymal stem cells (MSCs) are a promising therapy to improve vascular repair, yet their role in ischemic retinopathy is not fully understood. The aim of this study is to investigate the impact of modulating the neurotrophin receptor; p75NTR on the vascular protection of MSCs in an acute model of retinal ischemia/r...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms22020829
更新日期：2021-01-15 00:00:00
abstract：:The extracellular signal-regulated kinases (ERKs) comprise a particular branch of the mitogen-activated protein kinase cascades (MAPK) that transmits extracellular signals into the intracellular environment to trigger cellular growth responses. Similar to other MAPK cascades, the MAPK-ERK pathway signals through three...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms20143427
更新日期：2019-07-12 00:00:00
abstract：:Obesity-related metabolic abnormalities, including adipokine imbalance and chronic inflammation, are involved in liver carcinogenesis. Chemerin, a novel adipokine, plays a critical role in adipogenesis, energy metabolism, and inflammation. We evaluated the impact of serum chemerin levels on liver functional reserves i...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms150711294
更新日期：2014-06-25 00:00:00
abstract：:Melanogenesis is a biological process resulting in the production of melanin pigment, which plays an important role in the prevention of sun-induced skin injury, and determines hair and skin color. So, a wide variety of approaches have been proposed to increase the synthesis of melanin. This study evaluated the effect...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms19103211
更新日期：2018-10-17 00:00:00
abstract：:The carotid body (CB) is responsible for the peripheral chemoreflex by sensing blood gases and pH. The CB also appears to act as a peripheral sensor of metabolites and hormones, regulating the metabolism. CB malfunction induces aberrant chemosensory responses that culminate in the tonic overactivation of the sympathet...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21145117
更新日期：2020-07-20 00:00:00
abstract：:Immune response plays a fundamental role in protecting the organism from infections; however, dysregulation often occurs and can be detrimental for the organism, leading to a variety of immune-mediated diseases. Recently our understanding of the molecular and cellular networks regulating the immune response, and, in p...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms140917347
更新日期：2013-08-22 00:00:00
abstract：:Neurodegenerative diseases are characterized by adverse cellular environments and pathological alterations causing neurodegeneration in distinct brain regions. This development is triggered or facilitated by conditions such as hypoxia, ischemia or inflammation and is associated with disruptions of fundamental cellular...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms22020582
更新日期：2021-01-08 00:00:00
