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Zoological Research 2024年第4期45卷 821-830页

作者： Jing Zhang Yafei Chang Peng Zhang Yanqi Zhang mengke wei Chenyang Han Shun Wang Hui-Meng Lu Tiantian Cai Can Xie High Magnetic Field Laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesScience IslandHefeiAnhui 230031China Science Island Branch of Graduate School University of Science and Technology of ChinaHefeiAnhui 230036China Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui 230039China School of Life Sciences Key Laboratory for Space Bioscience and BiotechnologyNorthwestern Polytechnical UniversityXi’anShaanxi 710072China Institute of Quantum Sensing Zhejiang UniversityHangzhouZhejiang 310027China

Magnetic sense,or termed magnetoreception,has evolved in a broad range of taxa within the animal kingdom to facilitate orientation and ***,highly conserved A-type iron-sulfur proteins,are widely distributed across all phyla and play essential roles in both magnetoreception and iron-sulfur cluster ***,the evolutionary origins and functional diversification of MagRs from their prokaryotic ancestor remain *** this study,MagR sequences from 131 species,ranging from bacteria to humans,were selected for analysis,with 23 representative sequences covering species from prokaryotes to Mollusca,Arthropoda,Osteichthyes,Reptilia,Aves,and mammals chosen for protein expression and *** studies revealed a gradual increase in total iron content in MagRs during *** types of MagRs were identified,each with distinct iron and/or iron-sulfur cluster binding capacity and protein stability,indicating continuous expansion of the functional roles of MagRs during speciation and *** evolutionary biochemical study provides valuable insights into how evolution shapes the physical and chemical properties of biological molecules such as MagRs and how these properties influence the evolutionary trajectories of MagRs.

关键词： Magnetoreception Magnetoreceptor(MagR) Iron-sulfur cluster Stability Evolutionary biochemistry

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Mitochondrial targeting sequence of magnetoreceptor MagR:More than just targeting

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Zoological Research 2024年第3期45卷 468-477页

作者： Yanqi Zhang Peng Zhang Junjun Wang Jing Zhang Tianyang Tong Xiujuan Zhou Yajie Zhou mengke wei Chuanlin Feng Jinqian Li Xin Zhang Can Xie Tiantian Cai High Magnetic Field Laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhui 230031China University of Science and Technology of China HefeiAnhui 230026China Department of Anatomy School of Basic MedicineAnhui Medical UniversityHefeiAnhui 230032China Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui 230039China Key Laboratory of Tropical Translational Medicine of Ministry of Education NHC Key Laboratory of Tropical Disease ControlSchool of Tropical Medicine and The Second Affiliated HospitalHainan Medical UniversityHaikouHainan 571199China International Magnetobiology Frontier Research Center Science IslandHefeiAnhui 230031China Institute of Quantum Sensing Zhejiang UniversityHangzhouZhejiang 310027China

Iron-sulfur clusters(ISC)are essential cofactors for proteins involved in various biological processes,such as electron transport,biosynthetic reactions,DNA repair,and gene expression *** assembly protein IscA1(or MagR)is found within the mitochondria of most ***(MagR)is a highly conserved A-type iron and iron-sulfur cluster-binding protein,characterized by two distinct types of iron-sulfur clusters,[2Fe-2S]and[3Fe-4S],each conferring unique magnetic *** forms a rod-like polymer structure in complex with photoreceptive cryptochrome(Cry)and serves as a putative magnetoreceptor for retrieving geomagnetic information in animal *** the N-terminal sequences of MagR vary among species,their specific function remains *** the present study,we found that the N-terminal sequences of pigeon MagR,previously thought to serve as a mitochondrial targeting signal(MTS),were not cleaved following mitochondrial entry but instead modulated the efficiency with which iron-sulfur clusters and irons are ***,the N-terminal region of MagR was required for the formation of a stable MagR/Cry ***,the N-terminal sequences in pigeon MagR fulfil more important functional roles than just mitochondrial *** results further extend our understanding of the function of MagR and provide new insights into the origin of magnetoreception from an evolutionary perspective.

关键词： Magnetoreceptor(MagR) N-terminal sequence Mitochondrial targeting signal Iron-sulfur cluster

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Unexpected divergence in magnetoreceptor MagR from robin and pigeon linked to two sequence variations

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Zoological Research 2024年第1期45卷 69-78页

作者： Shun Wang Peng Zhang Fan Fei Tianyang Tong Xiujuan Zhou Yajie Zhou Jing Zhang mengke wei Yanqi Zhang Lei Zhang Yulong Huang Lin Zhang Xin Zhang Tiantian Cai Can Xie Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui 230039China High Magnetic Field Laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesScience IslandHefeiAnhui 230031China Science Island Branch of Graduate School University of Science and Technology of ChinaHefeiAnhui 230036China Department of Anatomy Anhui Medical UniversityHefeiAnhui 230032China Department of Mechanical and Aerospace Engineering University at BuffaloState University of New YorkBuffaloNY 14260 USA International Magnetobiology Frontier Research Center Science IslandHefeiAnhui 230031China

Birds exhibit extraordinary mobility and remarkable navigational skills,obtaining guidance cues from the Earth’s magnetic field for orientation and long-distance *** species also show tremendous diversity in navigation strategies,with considerable differences even within the same taxa and among individuals from the same *** highly conserved iron and iron-sulfur cluster binding magnetoreceptor(MagR)protein is suggested to enable animals,including birds,to detect the geomagnetic field and navigate ***,MagR is also implicated in other functions,such as electron transfer and biogenesis of iron-sulfur clusters,raising the question of whether variability exists in its biochemical and biophysical features among species,particularly *** the current study,we conducted a comparative analysis of MagR from two different bird species,including the migratory European robin(Erithacus rubecula)and the homing pigeon(Columba livia).Sequence alignment revealed an extremely high degree of similarity between the MagRs of these species,with only three sequence ***,two of these variations underpinned significant differences in metal binding capacity,oligomeric state,and magnetic *** findings offer compelling evidence for the marked differences in MagR between the two avian species,potentially explaining how a highly conserved protein can mediate such diverse functions.

关键词： Homing and migration Animal navigation Magnetoreceptor(MagR) Diverse navigation pattern Conserved protein

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非瓣膜性心房颤动患者服用新型口服抗凝药发生消化道出血的危险因素分析

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中国医药 2024年第1期19卷 20-24页

作者：魏梦珂孙亚梅陈雪张杰首都医科大学附属北京安贞医院消化内科北京100029

目的探讨非瓣膜性心房颤动患者服用新型口服抗凝药发生消化道出血的危险因素。方法选取2016年1月至2023年5月在首都医科大学附属北京安贞医院住院的因非瓣膜性心房颤动服用新型口服抗凝药的患者,纳入在住院期间发生消化道出血的患者作... 详细信息

目的探讨非瓣膜性心房颤动患者服用新型口服抗凝药发生消化道出血的危险因素。方法选取2016年1月至2023年5月在首都医科大学附属北京安贞医院住院的因非瓣膜性心房颤动服用新型口服抗凝药的患者,纳入在住院期间发生消化道出血的患者作为出血组,根据年龄、性别及新型口服抗凝药的类型和剂量进行1∶2随机匹配,纳入在住院期间未发生消化道出血的患者作为未出血组。收集2组患者一般资料、合并症、药物使用、化验指标等信息。采用Logistic回归分析探讨非瓣膜性心房颤动患者服用新型口服抗凝药发生消化道出血的危险因素,绘制受试者工作特征(ROC)曲线并计算曲线下面积(AUC)以评估危险因素对非瓣膜性心房颤动患者服用新型口服抗凝药发生消化道出血的预测价值。结果共纳入服用新型口服抗凝药的患者153例,其中出血组患者51例,未出血组患者102例。出血组患者合并冠心病(冠状动脉粥样硬化性心脏病)、心功能不全、既往消化道出血史、消化性溃疡、贫血、慢性肾功能不全、静脉血栓栓塞症、周围血管病比例均高于未出血组(均P<0.05)。出血组患者的基线血红蛋白水平低于未出血组,中性粒细胞百分比、血尿素氮、D-二聚体水平高于未出血组(均P<0.05)。多因素Logistic回归分析结果显示,冠心病(比值比=4.678,95%置信区间:1.600~13.677)、既往消化道出血史(比值比=9.906,95%置信区间:1.449~67.742)、慢性肾功能不全(比值比=4.893,95%置信区间:1.122~21.330)、贫血(比值比=13.487,95%置信区间:1.847~98.496)、D-二聚体(比值比=1.001,95%置信区间:1.000~1.003)是新型口服抗凝药治疗非瓣膜性心房颤动时发生消化道出血的独立危险因素。联合上述指标绘制ROC曲线,曲线下面积(AUC)为0.905(95%置信区间:0.854~0.955,P<0.001)。结论冠心病、既往消化道出血史、慢性肾功能不全、贫血、D-二聚体是非瓣膜性心房颤动患者服用新型口服抗凝药发生消化道出血的独立危险因素。

关键词：非瓣膜性心房颤动新型口服抗凝药消化道出血危险因素

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Boosting oxygen reduction activity and CO_(2) resistance on bismuth ferrite-based perovskite cathode for low-temperature solid oxide fuel cells below 600℃

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Journal of Energy Chemistry 2024年第3期90卷 600-609,I0013页

作者： Juntao Gao Zhiyun wei mengke Yuan Zhe Wang Zhe Lü Qiang Li Lingling Xu Bo wei School of Physics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080HeilongjiangChina School of Physics and Electronic Engineering Harbin Normal UniversityHarbin 150025HeilongjiangChina

Developing efficient and stable cathodes for low-temperature solid oxide fuel cells(LT-SOFCs) is of great importance for the practical ***,we propose a series of Sm-modified Bi_(0.7-x)Sm_xSr_(0.3)FeO_(3-δ) perovskites as highly-active catalysts for *** doping can significantly enhance the electrocata lytic activity and chemical stability of *** 600℃,Bi_(0.675)Sm_(0.025)Sr_(0.3)FeO_(3-δ)(BSSF25) cathode has been found to be the optimum composition with a polarization resistance of 0.098 Ω cm^2,which is only around 22.8% of Bi_(0.7)Sr_(0.3)FeO_(3-δ)(BSF).A full cell utilizing BSSF25 displays an exceptional output density of 790 mW cm^(-2),which can operate continuously over100 h without obvious *** remarkable electrochemical performance observed can be attributed to the improved O_(2) transport kinetics,superior surface oxygen adsorption capacity,as well as O_(2)p band centers in close proximity to the Fermi ***,larger average bonding energy(ABE) and the presence of highly acidic Bi,Sm,and Fe ions restrict the adsorption of CO_(2) on the cathode surface,resulting in excellent CO_(2) *** work provides valuable guidance for systematic design of efficient and durable catalysts for LT-SOFCs.

关键词： Low-temperature solid oxide fuel cell Perovskite cathode DFT calculations CO_(2) tolerance

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Mitochondrial targeting sequence of magnetoreceptor MagR:More than just targeting

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Zoological Research 2024年第3期 468页

作者： Yanqi Zhang Peng Zhang Junjun Wang Jing Zhang Tianyang Tong Xiujuan Zhou Yajie Zhou mengke wei Chuanlin Feng Jinqian Li Xin Zhang Can Xie Tiantian Cai

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Unexpected divergence in magnetoreceptor MagR from robin and pigeon linked to two sequence variations

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Zoological Research 2024年第1期

作者： Shun Wang Peng Zhang Fan Fei Tianyang Tong Xiujuan Zhou Yajie Zhou Jing Zhang mengke wei Yanqi Zhang Lei Zhang Yulong Huang Lin Zhang Xin Zhang Tiantian Cai Can Xie

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Towards magnetism in pigeon MagR: Iron- and iron-sulfur binding work indispensably and synergistically

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Zoological Research 2023年第1期44卷 142-152页

作者： Yajie Zhou Tianyang Tong mengke wei Peng Zhang Fan Fei Xiujuan Zhou Zhen Guo Jing Zhang Huangtao Xu Lei Zhang Shun Wang Junfeng Wang Tiantian Cai Xin Zhang Can Xie Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui 230039China High Magnetic Field Laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesScience IslandHefeiAnhui 230031China Department of Anatomy Anhui Medical UniversityHefeiAnhui 230032China Science Island Branch of Graduate School University of Science and Technology of ChinaHefeiAnhui 230036China School of Life Sciences Peking UniversityBeijing 100871China International Magnetobiology Frontier Research Center Science IslandHefeiAnhui 230031China Department of Biological Chemistry and Molecular Pharmacology Harvard Medical School250 Longwood AvenueBostonMA 02115USA

The ability to navigate long distances is essential for many animals to locate shelter,food,and breeding *** sense has evolved in various migratory and homing species to orient them based on the geomagnetic field.A highly conserved ironsulfur cluster assembly protein IscA is proposed as an animal magnetoreceptor(MagR).Iron-sulfur cluster binding is also suggested to play an essential role in MagR magnetism and is thus critical in animal *** the current study,we provide evidence for distinct iron binding and iron-sulfur cluster binding in MagR in pigeons,an avian species that relies on the geomagnetic field for navigation and *** MagR showed significantly higher total iron content from both iron-and ironsulfur binding.Y65 in pigeon MagR was shown to directly mediate mononuclear iron binding,and its mutation abolished iron-binding capacity of the ***,both iron binding and iron-sulfur binding demonstrated synergistic effects,and thus appear to be integral and indispensable to pigeon MagR *** results not only extend our current understanding of the origin and complexity of MagR magnetism,but also imply a possible molecular explanation for the huge diversity in animal magnetoreception.

关键词： Animal magnetoreception Iron-sulfur cluster binding Iron binding Magnetism Magnetoreceptor(MagR)

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On the evolutionary trail of MagRs

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动物学研究 2024年第4期 821页

作者： Jing Zhang Yafei Chang Peng Zhang Yanqi Zhang mengke wei Chenyang Han Shun Wang Hui-Meng Lu Tiantian Cai Can Xie

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正负双向脉冲式爆炸及其诱导的簇发振荡

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力学学报 2019年第3期51卷 904-911页

作者：魏梦可韩修静张晓芳毕勤胜江苏大学土木工程与力学学院

簇发振荡普遍存在.探索通向簇发振荡的可能路径是簇发研究的热点问题之一.'脉冲式爆炸(pulsedshaped explosion, PSE)'是一种最近被报道的可以诱发簇发振荡的新机制,其特征为平衡点和极限环表现出了与参数变化相关的脉冲式急剧量变. PS... 详细信息

簇发振荡普遍存在.探索通向簇发振荡的可能路径是簇发研究的热点问题之一.'脉冲式爆炸(pulsedshaped explosion, PSE)'是一种最近被报道的可以诱发簇发振荡的新机制,其特征为平衡点和极限环表现出了与参数变化相关的脉冲式急剧量变. PSE会导致系统轨线急剧跃迁,从而诱发典型的簇发振荡.然而,目前报道的PSE中仅含有'单向的尖峰',未发现'双向的尖峰',且由其诱发的簇发振荡仅含单向的振荡簇.本文以多频激励Rayleigh系统为例,旨在揭示PSE的不同表现形式以及与此相关的簇发动力学.利用频率转换快慢分析法得到了Rayleigh系统的快子系统和慢变量.针对快子系统的分析表明,PSE表现出了较为复杂的动力学特性,其特征是PSE包含了正负双向两个不同的尖峰,此即所谓的正负双向PSE.其急剧量变行为,导致了系统轨线在单个振荡周期内出现正向和负向的多次跃迁,由此得到了由正负双向PSE所诱发的簇发振荡.根据吸引子类型分别揭示了点–点型和环–环型两类簇发振荡模式的产生机制.本文的研究给出了PSE的不同表现形式,丰富了多时间尺度下的簇发振荡的诱发机制.

关键词：簇发振荡正负双向脉冲式爆炸频率转换快慢分析法 Rayleigh型方程

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