Jun 1, 1970

Ferredoxin from Bumilleriopsis filiformis Vischer

Planta
P böger

Abstract

Ferredoxin from the alga Bumilleriopsis filiformis Vischer (Xanthophyceae) is characterized by comparing some of its properties with spinach ferredoxin.It is similar to the known plant ferredoxins in the following points: a) Absorption spectrum. b) Molecular weight. c) Amino acid composition (approx. 100 amino acid residues). d) Uptake of 1 electron upon complete reduction and a 50 per cent decrease of the optical density at 420 nm. e) 2 non-heme iron atoms per molecule, which do not exchange with an iron isotope. f) SH-groups of the native protein do not react with DTNB. Bumilleriopsis ferredoxin differs from known plant ferredoxins in the following points: a) Greater stability towards atmospheric oxygen when gently heated. b) Only 1 detectable acid-labile sulfur atom per molecule. c) Dialysis against EDTA: by this procedure a part of the iron but none of the acid-labile sulfur is removed. With spinach ferredoxin a part of both elements is removed simultaneously. d) Greater reactivity with ferredoxin-NADP reductase from Bumilleriopsis than with that from spinach. With spinach ferredoxin no substantial difference between the reaction rates of the two reductases is observed (see Böger, 1969 b). The results may indicate an active...Continue Reading

  • References25
  • Citations6

References

Mentioned in this Paper

Spinach preparation
Ferredoxin
Bumilleriopsis filiformis
Ferredoxin-NADP Reductase
Spinacia oleracea
Bumilleriopsis
Uptake
Sulfur
Ferredoxin Activity
Dithionitrobenzoic Acid

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Bone Marrow Neoplasms

Bone Marrow Neoplasms are cancers that occur in the bone marrow. Discover the latest research on Bone Marrow Neoplasms here.

IGA Glomerulonephritis

IgA glomerulonephritis is a chronic form of glomerulonephritis characterized by deposits of predominantly Iimmunoglobin A in the mesangial area. Discover the latest research on IgA glomerulonephritis here.

Cryogenic Electron Microscopy

Cryogenic electron microscopy (Cryo-EM) allows the determination of biological macromolecules and their assemblies at a near-atomic resolution. Here is the latest research.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

LRRK2 & Immunity During Infection

Mutations in the LRRK2 gene are a risk-factor for developing Parkinson’s disease. However, LRRK2 has been shown to function as a central regulator of vesicular trafficking, infection, immunity, and inflammation. Here is the latest research on the role of this kinase on immunity during infection.

Antiphospholipid Syndrome

Antiphospholipid syndrome or antiphospholipid antibody syndrome (APS or APLS), is an autoimmune, hypercoagulable state caused by the presence of antibodies directed against phospholipids.

Meningococcal Myelitis

Meningococcal myelitis is characterized by inflammation and myelin damage to the meninges and spinal cord. Discover the latest research on meningococcal myelitis here.

Alzheimer's Disease: MS4A

Variants within membrane-spanning 4-domains subfamily A (MS4A) gene cluster have recently been implicated in Alzheimer's disease by recent genome-wide association studies. Here is the latest research.