Proteins can serve all of the following functions EXCEPT?
D. store hereditary Information - This is the function of the genetic material DNA. Protein functions: A. catalyze metabolic reactions - enzymes like synthases, mutases, dehydrogenases, proteases and kinases. B. give structural strength to cells and tissue like collagen, keratin, laminin, tubulin or actin C. produce muscular and other forms of movement - myosin, kinesin and dynein motors conected to structural proteins. E. regulate transport of solutes into and out of cells like symporter SGLT1 that moves both sodium and glucose, H+-transporting ATPases, or porins that form gated transmembrane channels for diffusion.
How many types of DNA function are there as a gene?
That’s a broad question… What are you really asking?Let’s make sure we’re on the same page. A gene is a segment of a chromosome which encodes for a specific trait. (blood type, hair color, eye color, etc…)So, it is literally a part of a very long strand of DNA. It’s like a sub-routine that is a small part of a master program…Now, you ask, “How many types of DNA functions there are?”Well, you can boil the function of the gene down to two I guess.to determine phenotype (trait that is expressed)to pass down a specific trait from generation to generation.But, the first one can be expanded into an almost infinite list if you chose.a gene can serve as the master code (instructions) for the synthesis of a specific protein (I.e. hemoglobin, collagen, laminin, fibronectin, insulin, glucagon, a huge list of enzymes….)a gene can be one of the genes found within an operon.a gene could serve as a regulator gene. It’s main function is to help control the expression of another gene.I could go on but… genes can have many different specific functions. But it boils down to the first two I mentioned… (If you want the all encompassing easy answer.)But is there something more specific you’re looking for?
Does anyone know what laminin is or does?
Laminin is the major non-collagenous component of the basal lamina, such as those on which cells of an epithelium sit. Basically, laminin is a protein found in the "extracellular matrix", the sheets of protein that form the substrate of all internal organs also called the "basement membrane". It has four arms that can bind to four other molecules. The three shorter arms are particularly good at binding to other laminin molecules, which is what makes it so great at forming sheets. The long arm is capable of binding to cells, which helps anchor the actual organs to the membrane.
Is the basement membrane collection of living cells a cellular structure?
Basement membrane is a non-cellular structure which consists of two layers:(i) Basal Lamina:It is outer thin layer (near the epithelial cells), composed of mucopolysaccharides and glycoproteins, both secreted by epithelial cells. It is visible only with the electron microscope.(ii) Fibrous or Reticular Lamina:It is inner thick layer, composed of collagen or reticular fibres of the underlying connective tissue. It is visible with light microscope. The basement membrane provides elastic support. It also allows selective chemical exchange between epithelial tissues and surrounding blood vessels.
How many types of proteins are found in the human body?
Hi Ram,Thank you for your question,Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body’s tissues and organs.Proteins are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains. There are 20 different types of amino acids that can be combined to make a protein. The sequence of amino acids determines each protein’s unique 3-dimensional structure and its specific function.It is also estimated that human body has the ability to generate 2 million different types of proteins, coded by only 20,000-25,000 of our genes. The sum of proteins in biological organisms exceeds 10 million, despite this, I do not think anyone has done any proper research on this.Hope that helps,R.
Which of the following proteins of the ECM has a membrane bilayer-spanning domain?
b. Heperan sulfate proteoglycan syndecan