Monday, April 6, 2015

DNA LAB / REPRODUCTIVE

Eight Genes of my Chromosome

                  1.  MIR122:
a.       Otherwise known as microRNA122; microRNAs (miRNAs) are short (20-24 nt) non-coding RNA's that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs.  miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding.
b.      The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA.

                 2.      TCF4:
a.       Otherwise known as transcription factor 4; this gene encodes transcription factor 4, a basic helix-loop-helix transcription factor.
b.      This gene is broadly expressed, and may play an important role in the nervous system development. Defects in this gene are a cause of Pitt-Hopkins syndrome.

                3.      MBP:
a.       Otherwise known a myelin basic proteins; the protein encoded by the classic MBP gene is a major constituent of the myelin sheath of oligodendrocytes and Schwann cells in the nervous system.
b.      This complex gene structure is conserved among species suggesting that the MBP transcription unit is an integral part of the Golli transcription unit and that this arrangement is important for the function and/or regulation of these genes.

                4.      MC4R:
a.       Otherwise known as melanocortin 4 receptor; the protein encoded by this gene is a membrane-bound receptor and member of the melanocortin receptor family. 
b.      Defects in this gene are a cause of autosomal dominant obesity.

                5.      BCL2:
a.       Otherwise known as B-cell CLL/lymphoma 2; this gene encodes an integral outer mitochondrial membrane protein that blocks the apoptotic death of some cells such as lymphocytes.
b.      In some cases of translocation of BCL2 to Ig heavy chain locus, it is thought to be the cause of follicular lymphoma.

                6.      AQP4:
a.       Otherwise known as aquaporin 4 ; this gene encodes a member of the aquaporin family of intrinsic membrane proteins that function as water-selective channels in the plasma membranes of many cells.
b.      Two alternatively spliced transcript variants encoding distinct isoforms have been found for this gene.

                7.      NFATC1:
a.       Otherwise known as nuclear factor of activated T-cells, cytoplasmic, calcineurin-dependent 1.  The product of this gene is a component of the nuclear factor of activated T cells DNA-binding transcription complex
b.      Proteins belonging to this family of transcription factors play a central role in inducible gene transcription during immune response.

                 8.      FECH:
a.       Otherwise known as ferrochelatase; the protein is encoded by this gene is localized to the mitochondrion, where it catalyzes the insertion of the ferrous form of iron into protoporphyrin IX in the heme synthesis pathway.
b.      A pseudogene of this gene is found on chromosome 3.

microRNA’s:  Mature microRNAs are short, single-stranded RNA molecules approximately 22 nucleotides in length. MicroRNAs are sometimes encoded by multiple loci, some of which are organized in tandem co-transcribed clusters.

myelin basic proteins:  The protein encoded by the classic MBP gene is a major constituent of the myelin sheath of oligodendrocytes and Schwann cells in the nervous system.

melanocortin 4 receptor:  Melanocortin receptors are activated by members of the melanocortin family

B-cell CLL/lymphoma 2:  is a protein-coding gene.

Hayes, William. "MIR122 Gene." - GeneCards. 2 Sept. 2012. Web. 6 Apr. 2015. <http://www.genecards.org/cgi-bin/carddisp.pl?gene=MIR122&search=603d7b140e0534818770b5c4bb2dd795>.

George, Stanley. "MBP." 18 Feb. 2010. Web. 6 Apr. 2015. &lt;http://www.genecards.org/cgi-bin/carddisp.pl?gene=MBP&search=e606e6e6684fe21c2eb7ec8fca53ed22&gt;.

Williams, Douglas. "MC4R Gene." - GeneCards. 8 May 2011. Web. 6 Apr. 2015. <http://www.genecards.org/cgi-bin/carddisp.pl?gene=MC4R&search=9be0c957a75e72f52cb54e9e2538a7b5>.

Jones, Howard. 19 Oct. 2010. Web. 6 Apr. 2015. <http://www.genecards.org/cgi-bin/carddisp.pl?gene=BCL2&search=6db800980162c2e36500720c067d1dad>.






AQP4: I believe this gene fits me the closest out of the eight I have chosen. Encodes a member of the aquaporin family of intrinsic membrane proteins that function as water-selective channels in the plasma membranes of many cells. AQP4 is an RNA gene, and is affiliated with the antisense RNA class.  If I understand the meaning it is stating that those who have this gene find it difficult with their senses.  I myself have difficulty with senses.




Is cloning an organism the same as cloning a gene?

You may have heard about researchers cloning, or identifying, genes that are responsible for various medical conditions or traits.  What's the difference?  When scientists clone an organism, they are making an exact genetic copy of the whole organism, as described above.
In cloning a gene, a circular piece of DNA from bacteria is cut and the new gene is inserted. Then the gene replicates in the bacteria and it can be used for other organisms. It's called "genetic modification" and is used in a lot of the food we eat.   Organism cloning is taking an egg from the host, and taking out the nucleus, and some other things, along with an electrical shock, and implanting it into the host animal.  This process makes it easier to study the function of the individual gene in the laboratory.

Cloning a Specific Gene

The foregoing descriptions are generic approaches to creating recombinant DNA. However, a geneticist is interested in isolating and characterizing some particular gene of interest, so the procedures must be tailored to isolate a specific recombinant DNA clone that will contain that particular gene. The details of the process differ from organism to organism and from gene to gene. An important initial factor is the choice of an appropriate vector for the job at hand.









 
 

 
 

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