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5 650 (0,088s)

Výsledek výzkumu

Synthesis of novel expanded calixphyrins: Anion binding properties of a calix[6]phyrin with a deep cavity

Chemical hybrids of the porphyrins and calixpyrroles, calix-[n]phyrins, are polypyrrolic macrocycles that contain at least one sp 3 hybridized meso-like bridging carbon atom. The chemistry of higher order calix-[n]phyrins (n > 4) remains virtually un...

CB - Analytická chemie, separace

  • 2001
  • Jx
Výsledek výzkumu

Sequence Evidence for the Presence of Two Tetrapyrrole Pathways in Euglena gracilis

Genes encoding enzymes of the tetrapyrrole biosynthetic pathway were searched predictions support the hypothesis concerning the presence of two separated tetrapyrrole-localized tetrapyrrole syntheses in plants and photosynt...

EB - Genetika a molekulární biologie

  • 2011
  • Jx
  • Odkaz
Výsledek výzkumu

Calixphyrins. Hybrid macrocycles at the structural crossroads between porphyrins and calixpyrroles

Calixphyrins are a class of hybrid molecules that lie at the structural crossroads between porphyrins and calixpyrroles. Calix[n]phyrins bear analogy to both the porphyrins and calixpyrroles and are macrocyclic analogs that contain a mixture of sp(2)...

CB - Analytická chemie, separace

  • 2001
  • Jx
Výsledek výzkumu

Analysis of tetrapyrrole pigments in foodstuffs.

Annotation not available...

CB - Analytická chemie, separace

  • 2000
  • D
Výsledek výzkumu

Dicarbonyl[10,10-dimethyl-5,15-bis(pentafluorophenyl) biladiene]ruthenium(II): discovery of the first ruthenium tetrapyrrole cis-dicarbonyl complex by X-ray and electron diffraction

Dicarbonyl[10,10-dimethyl-5,15-bis(pentafluorophenyl)biladiene]ruthenium(II), [Ru(C33H16F10N4)(CO)2] or Ru(CO)2[DMBil1], is the first reported ruthenium(II) cis-dicarbonyl tetrapyrrole complex. While the structure of Ru(CO)2[DMBil1] was init...

Condensed matter physics (including formerly solid state physics, supercond.)

  • 2024
  • Jimp
  • Odkaz
Výsledek výzkumu

Chlorophyll biosynthesis under the control of arginine metabolism.

-limiting factor. For acclimation, the dynamic degradation/synthesisof tetrapyrrolic restricted de novo synthesis of tetrapyrroles, which arrested the recovery from nitrogen deficiency. Our data reveal a direct crosstalk between

Biochemistry and molecular biology

  • 2023
  • JSC
  • Odkaz
Výsledek výzkumu

Evolution of tetrapyrrole pathway in eukaryotic phototrophs

Tetrapyrroles such as chlorophyll and heme are involved in conversion of the light energy to chemical bonds by photosynthetic electron transfer as well as phosphorylation and participation as cofactor in various enzymatic activities and in c...

Microbiology

  • 2019
  • Jimp
  • Odkaz
Výsledek výzkumu

A thylakoid biogenesis BtpA protein is required for the initial step of tetrapyrrole biosynthesis in cyanobacteria

enzyme of tetrapyrrole biosynthesis. Indeed, the GluTR was not detectable of tetrapyrroles and photoautotrophy by increased GluTR expression or by improved GluTR of regulation of tetrapyrrole biosynthesis....

Developmental biology

  • 2024
  • Jimp
  • Odkaz
Výsledek výzkumu

Make It, Take It, or Leave It: Heme Metabolism of Parasites

Heme and other tetrapyrroles, often called ?the colors of life, belong to the most important molecules of almost all extant organisms. They are synthesized complex tetrapyrrole, is involved in DNA synthesis and energy metabolism [2]...

EB - Genetika a molekulární biologie

  • 2013
  • Jx
  • Odkaz
Výsledek výzkumu

Chiral Guest Binding as a Probe of Macrocycle Dynamics and Tautomerism in a Conjugated Tetrapyrrole

We report chiral guest binding as a probe of prototropic tautomerism and macrocyclic inversion in a highly conjugated tetrapyrrole studied using H-1 NMR spectroscopy in conjunction with mandelic acid as the chiral guest. Both tautomerism and...

BM - Fyzika pevných látek a magnetismus

  • 2014
  • Jx
  • Odkaz
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