関連する実験動画
Updated: Jul 21, 2026

13:54
Tractable Mammalian Cell Infections with Protozoan-primed Bacteria
Published on: April 2, 2013
ストロンチウムでカルシウムを代用したストロンチウムが,プロトシフォンの運動細胞の産生に及ぼす影響
まとめ
ストロンチウムは,無機媒体のカルシウムを代用することができ,Protosiphon botryoides Klebsの成長を可能にします. しかし,カルシウムをナトリウムに置き換えることで,成長が妨げられ,カルシウムが表示される.
科学分野:
- * 藻類の生理学と無機栄養素の要求.
- * 藻類の細胞イオン輸送機構.
背景:
- *カルシウムは,藻類の成長を含む多くの生物学的プロセスに不可欠なカチオンです.
- * プロトシフォンボトリオイドの成長と発達におけるカルシウムの特定の役割は完全に理解されていません.
研究 の 目的:
- * ストロンチウムとナトリウムによるカルシウム置換が,Protosiphon botryoidesの成長に及ぼす影響を調査する.
- * プロトシフォンボトリオイドの運動性に必要な最低カルシウム塩化物 (CaCl(2) 濃度を決定する.
主な方法:
- * プロトシフォンボトリオイドの培養は,カルシウムをストロンチウムまたはナトリウムで代用した無機媒介で培養する.
- * 異なったイオン条件下での成長率の定量化.
- * 異なるCaCl, 2H, 2O濃度で運動性を観察し測定する.
主要な成果:
- * プロトシフォンボトリオイドは,ストロンチウムがカルシウムに取って代わられたときに,正常な成長の50〜90%を示した.
- *ナトリウムがカルシウムに取って代わられたとき,有意な成長は起こらなかった.
- * 流動性は,ストロンチウムの存在に関係なく,CaCl(2).2H(2) Oレベル5mg/Lで観察されました.
結論:
- * ストロンチウムは,プロトシフォンボトリオイドの成長を支援するために,カルシウムを部分的に置き換えることができます.
- *ナトリウムはカルシウムの代わりにはならず,カルシウムの特別な役割を強調しています.
- * プロトシフォンボトリオイドの運動性のために最低限のカルシウムが必要である.
関連する概念動画
Chemiosmosis
Oxidative phosphorylation is a highly efficient process that generates large amounts of adenosine triphosphate (ATP), the basic unit of energy that drives many cellular processes. Oxidative phosphorylation involves two processes— the electron transport chain and chemiosmosis.
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons reduce...
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons reduce...
ATP Driven Pumps I: An Overview
ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and are...
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and are...
Mitochondria
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
Protein Transport to the Stroma
Chloroplasts are triple membrane structures with an outer membrane, an inner membrane, and a thylakoid membrane, each containing distinct metabolite transporters, membrane translocons, and enzymes. Appropriate sorting and translocating these proteins to their correct membrane systems is essential for chloroplast function.
Protein complexes called the translocon of the outer chloroplast membrane or TOC complex, and the translocon of the inner chloroplast membrane or TIC complex mediate the...
Protein complexes called the translocon of the outer chloroplast membrane or TOC complex, and the translocon of the inner chloroplast membrane or TIC complex mediate the...
Overview of Protists
Protists are diverse eukaryotic microorganisms that lack the specialized tissues of plants and animals and the chitinous cell walls of fungi. Their early divergence within Eukarya resulted in structural, functional, and ecological diversity. They are classified into supergroups such as Archaeplastida, Excavata, Amoebozoa, Rhizaria, Alveolata, and Stramenopiles, determined through genetic analysis and structural similarities.Structural and Functional AdaptationsProtists have various adaptations...
Diversity of Protists IV
Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...

