Haemoglobin and Methaemoglobin as Oxidative Catalysts

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

MRI Detects Oxidative Stress Induced by Methaemoglobin

Fluorescence than Ferrous Hb In the absence of haemoglobin (Hb) products, no cisparinaric Acid (PnA) fluorescence is lost. However, upon addition of ferrous Hb, there is an increasing amount of fluorescence lost. Substantial fluorescence quenching is seen on the addition of extracellular mHb, with significantly less using an intracellular product. This suggests that the cellular membrane is an ...

متن کامل

Methaemoglobin as an Indicator of PMOR Activity

MetHb is often defined as oxidised Hb; that is the haem iron is oxidised from the ferrous (Fe) state to the ferric (Fe) state. In addition, in metHb the sixth coordination site of the haem iron is liganded to a water molecule; this shifts the absorbance maxima from that of Hb causing metHb to be chocolate brown in colour (acid form). At pH ~8 the water molecule is replaced by a bound hydroxyl g...

متن کامل

Intermediate structure of normal human haemoglobin: methaemoglobin in the deoxy quaternary conformation.

This paper describes E new method of producing a crystalline intermediate between the unligated and ligated states of haemoglobin, suitable for X-ray analysis, by the use of a lattice strengthening reagent. Acrylamide is polymerized in the liquid of crystallization after the crystal haa grown, forming a stiff supporting gel between the haemoglobin molecules, but not covalent bonds with them. Th...

متن کامل

Modular Polyoxometalate-Layered Double Hydroxide Composites as Efficient Oxidative Catalysts.

The exploitation of intercalation techniques in the field of two-dimensional layered materials offers unique opportunities for controlling chemical reactions in confined spaces and developing nanocomposites with desired functionality. In this study, the exploitation of the novel and facile "one-pot" anion-exchange method for the functionalization of layered double hydroxides (LDHs) is demonstra...

متن کامل

Complicated migraine and Haemoglobin AS in Nigerians.

Among 123 Nigerians with migraine seen at one clinic 49 (40%) had complicated migraine, with ophthalmoplegia in 20 and amaurosis or field defects in 13. Haemoglobin AS was found in 60% of patients with complicated migraine, compared with 20% of those with simple migraine.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Biochemical Journal

سال: 1924

ISSN: 0306-3283

DOI: 10.1042/bj0180255