Define intra enterocyte transport - non-haem iron absorption, Biology

Assignment Help:

Define Intra enterocyte transport - non-haem iron absorption?

Intra enterocyte transport: In the enterocyte, the absorbed iron can have one of the following metabolic fates:

  • transported through the enterocyte into the blood, and
  • stored in the enterocyte for future use or elimination.

 

Iron is transported through the enterocyte to the baso-lateral membrane by iron binding protein- mobilferrin. Mobilferrin can also bind to Ca, Cu and Zn. The multiple metal ion-binding properties of mobilferrin may be partially responsible for interactions between these minerals at absorptive surface. The iron which is not transported across the cell for release is stored as ferritin in mucosal cells. If required for the body, it is released for transport. If not needed, the iron remains as ferritin and is excreted when mucosal cells are sloughed off in the lumen, thus, ferritin in the enterocyte acts as an 'iron sink', trapping excess iron and removing it via intestinal excretion.


Related Discussions:- Define intra enterocyte transport - non-haem iron absorption

Angiotensin-converting enzyme inhibitors, Angiotensin Converting Enzyme Inh...

Angiotensin Converting Enzyme Inhibitors (ACEI) has shown to reduce mortality in heart failure to the tune of 16-30 per cent in various large trials. The renin-angiotensin-aldos

Define corneal xerosis - micronutrient deficiencies, Define Corneal Xerosis...

Define Corneal Xerosis - Micronutrient Deficiencies? This is a sign of severe vitamin 'A' deficiency, in which the cornea loses its normal smooth and glistening appearance and

What is a single cell protein, What is a single cell protein? The prote...

What is a single cell protein? The proteins obtained from microbial sources, i.e. algae, fungi, bacteria, yeast etc. are referred to as Single Cell Proteins. These are isolated

Lungs, LUNG S (PULMONES) - Present in pleural cavity. Covere...

LUNG S (PULMONES) - Present in pleural cavity. Covered by double layered pleura. Outer parietal pleura and inner visceral pleura. Both are continuous, slip on

Sources of food contamination, All plants and animals have a natural microf...

All plants and animals have a natural microflora associated with them. For example, the plants have a natural microflora associated with the surface of roots, stems, leaves e

Describe induced ventricular arrhythmias, Q. Describe Induced Ventricular A...

Q. Describe Induced Ventricular Arrhythmias? The prognostic significance of ventricular ectopy provoked by stress testing after an MI is controversial. Complex ventricular arrh

Blotting technique to detect particular specific proteins, Blotting method ...

Blotting method to detect particular one proteins Ans) Western blotting

Determine the modification of food starches, Modification of Food Starches ...

Modification of Food Starches Positive attributes of starches can be greatly improved and/or negative characteristics diminished by slight and relatively simple modifications.

Zoology, structural adaptation of mammalian alimentary canal

structural adaptation of mammalian alimentary canal

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd