scholarly journals Structural features of halophilicity derived from the crystal structure of dihydrofolate reductase from the Dead Sea halophilic archaeon, Haloferax volcanii

Structure ◽  
1998 ◽  
Vol 6 (1) ◽  
pp. 75-88 ◽  
Author(s):  
Ursula Pieper ◽  
Geeta Kapadia ◽  
Moshe Mevarech ◽  
Osnat Herzberg
Keyword(s):  
Crystal Structure ◽  
Dihydrofolate Reductase ◽  
Structural Features ◽  
Dead Sea ◽  
Haloferax Volcanii ◽  
Halophilic Archaeon ◽  
The Dead

scholarly journals Genome Sequence of Salarchaeum sp. Strain JOR-1, an Extremely Halophilic Archaeon from the Dead Sea

2020 ◽  
Vol 9 (5) ◽  
Author(s):  
Brian P. Anton ◽  
Priya DasSarma ◽  
Fabiana L. Martinez ◽  
Satyajit L. DasSarma ◽  
Mohammad Al Madadha ◽  
...  
Keyword(s):  
Real Time ◽  
Genome Sequence ◽  
Single Molecule ◽  
East Coast ◽  
Dead Sea ◽  
Halophilic Archaeon ◽  
Smrt Sequencing ◽  
Circular Chromosome ◽  
Extremely Halophilic Archaeon ◽  
The Dead

An extremely halophilic archaeon, Salarchaeum sp. strain JOR-1, was isolated from the east coast of the Dead Sea, Kingdom of Jordan, and sequenced using single-molecule real-time (SMRT) sequencing. The GC-rich 2.5-Mbp genome was composed of a circular chromosome and a megaplasmid. The genome contained 2,633 genes and was incorporated into HaloWeb (https://halo.umbc.edu/).

A discussion on the structure and evolution of the Red Sea and the nature of the Red Sea, Gulf of Aden and Ethiopia rift junction - The structural pattern of the Afro-Arabian rift system in relation to plate tectonics

1970 ◽  
Vol 267 (1181) ◽  
pp. 383-391 ◽  
Keyword(s):  
Red Sea ◽  
Plate Tectonics ◽  
Structural Model ◽  
Structural Features ◽  
Dead Sea ◽  
Strike Slip ◽  
Rift System ◽  
Gulf Of Aden ◽  
Structural Pattern ◽  
The Dead

The structural pattern of the Afro-Arabian rift system suggests the influence of transcurrent faulting in the development of the main branches of the system, particularly along the Dead Sea rift, the Gulf of Suez and Red Sea, and the eastern rift of Africa. Geophysical evidence indicates that the Red Sea and Gulf of Aden formed as a result of the separation of the Arabian and African continental blocks. Previously determined rotation poles about which the blocks separated neglect some structural features of the region. A satisfactory refit of Arabia to Africa can­ not be made unless some relative movements of parts of the Africa block too place. It is proposed that dextral strike-slip movements took place between Africa and Arabia along the Red Sea and that sinistral strike-slip movements occurred along the Dead Sea rift. In addition, rotation of the E. Kenya-Somalia block east of the eastern rift of Africa took place. Structural and palaeomagnetic evidence supports such movements. The structural model is compatible with the observed tectonic pattern and provides a genetic link between the formation of the Red Sea, Gulf of Aden and the African rifts.

scholarly journals Semi-automatic extraction of lineaments from remote sensing data and the derivation of groundwater flow-paths

2011 ◽  
Vol 8 (1) ◽  
pp. 1399-1431 ◽  
Author(s):  
U. Mallast ◽  
R. Gloaguen ◽  
S. Geyer ◽  
T. Rödiger ◽  
C. Siebert
Keyword(s):  
Remote Sensing Data ◽  
Structural Features ◽  
Dead Sea ◽  
Flow Paths ◽  
Significant Information ◽  
Aster Gdem ◽  
The Dead ◽  
Probable Origin ◽  
Well Data ◽  
High Degree

Abstract. We describe a semi-automatic method to objectively and reproducibly extract lineaments based on the global one arc-second ASTER GDEM. The combined method of linear filtering and object-based classification ensures a high degree of accuracy resulting in a lineament map. Subsequently lineaments are differentiated into geological and morphological lineaments to assign a probable origin and hence a hydro-geological significance. In the western catchment area of the Dead Sea (Israel) the orientation and location of the differentiated lineaments are compared to characteristics of known structural features. The authors demonstrate that a strong correlation between lineaments and structural features exist, being either influenced by the Syrian Arc paleostress field or the Dead Sea stress field or by both. Subsequently, we analyse the distances between lineaments and wells thereby creating an assessment criterion concerning the hydraulic significance of detected lineaments. Derived from this analysis the authors suggest that the statistic analysis of lineaments allows a delineation of flow-paths and thus significant information for groundwater analysis. We validate the flow-path delineation by comparison with existing groundwater model results based on well data.

Nomenclature and Classification of the Arctite Supergroup.Aravaite, Ba2Ca18(SiO4)6[(PO4)3(CO3)]F3O, a New Arctite Supergroup Mineral from Negev Desert, Israel

2021 ◽  
Author(s):  
Evgeny Galuskin ◽  
Irina Galuskina ◽  
Biljana Krüger ◽  
Hannes Krüger ◽  
Yevgeny Vapnik ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Preliminary Data ◽  
Dead Sea ◽  
Negev Desert ◽  
New Mineral ◽  
New Classification ◽  
The Dead

ABSTRACT The crystal structure of arctite, (Na5Ca)Ca6Ba(PO4)6F3 (Rm, a = 7.904 Å, с = 41.320 Å), was refined in 1984 by E. Sokolova. According to modern concepts, this mineral belongs to the intercalated antiperovskites and is characterized by intercalation of triple antiperovskite layers {[F3(Ca7Na5)](PO4)4}4+ and tetrahedral layers Ba(PO4)24–. The pyrometamorphic rocks of the Hatrurim Complex, which are distributed along the Dead Sea Rift, are the origin of eight new minerals with intercalated antiperovskite structures, all discovered within the last five years. Therefore, an update and improvement of the classification and nomenclature was required. The new classification of the arctite supergroup was approved by the CNMNC IMA (Memorandum 95–SM20). The arctite supergroup combines the arctite group (minerals with triple antiperovskite layers), which includes arctite, (Na5Ca)Ca6Ba(PO4)6F3; nabimusaite, KCa12(SiO4)4(SO4)2O2F; dargaite, BaCa12(SiO4)4(SO4)2O3; and ariegilatite, BaCa12(SiO4)4(PO4)2F2O, with the zadovite group (minerals with single antiperovskite layers), which includes zadovite, BaCa6[(SiO4)(PO4)](PO4)2F; aradite, BaCa6[(SiO4)(VO4)](VO4)2F; gazeevite, BaCa6(SiO4)2(SO4)2O; and stracherite, BaCa6(SiO4)2[(PO4)(CO3)]F. Another ungrouped member of the arctite supergroup is aravaite, Ba2Ca18(SiO4)6[(PO4)3(CO3)]F3O – a unique mineral which is formed by the ordered intercalation of super-modules of ariegilatite and stracherite. In addition, a description of aravaite as a new mineral is presented in this paper. The crystal structure has been previously published (Krüger et al. 2018). Furthermore, preliminary data for potentially new minerals of the arctite supergroup, found in rocks of the Hatrurim Complex, are discussed.

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