what thr met mean in met operon?
554256
methyonin a kind of amino acid
1100165
Mg is neseccary for the catalytic reaction. A lot of enzymes have an ion in their catalyitic center which usually co-ordinate the reacting groups.
964134
AAUCGGACU\n\nBecause:\nG matches with C\nA matches with U\nBut when it's a T in DNA, it'll be an A in RNA. If it's an A in DNA, it'll be a U in RNA. That's the most confusing part about transcription.
89543
r methyl viologen \n\nwow..this was a hard one\n\nIt appears to be used in Genome research.
443074
gene:\nhttp://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nucleotide&val=46561731\nhttp://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nucleotide&val=10444342\nhttp://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nucleotide&val=311024\nhttp://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nucleotide&val=48496\nhttp://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nucleotide&val=155319\nhttp://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nucleotide&val=155317\n\nPCR:\nhttp://www.protocol-online.org/prot/Molecular_Biology/PCR/Standard_PCR/index.html
869291
Mt? Is it a sequence of elements?
977995
One word contradicts your "facts". \n\nPlasmids.\n\nPlasmids are non-chromosomal loops of DNA found in bacteria.  They often contain antibacterial resistance genes, or give the ability to use different sugars.  These plasmids are commonly shared by bacteria.  This is a gain of genetic information.\n\nNow, it is true that we only have 4 types of nucleotides in DNA, and they make about 20 amino acids.  This is conserved in all life forms. But from this, a countless number of proteins can be made, and have a nearly infinite number of effects.  Your suggesting could be likened to saying that we can never invent a new word, since we only have 26 letters.  \n\nPlease provide a source for your claims, perhaps then we can understand how you arrived at such a conclusion.
60234
I think you might be refering to plasmids.\nA plasmid is a small circular piece of DNA found in bacteria. A plasmid will often include genes which encode a protein that confers resistance to antibiotics. They can be transferred fromn one bacterium to another and replicate separately from the bacterial genomic DNA. One bacterium can contain many copies of a particular plasmid.\n\nLook it up & see if it is relevant to your enquiry.
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Methylotrophs are microorganisms that can use C1 compounds (methanol, methylamine, methane, etc.) for growth. \n\nExamples: Methylococcus capsulatus, Methylobacterium extorquens, Paracoccus denitrificans
490917
The phenotype is the physical expression of the genotype. In bacteria transformed with the pBLU plasmid and plated on the growth media containing IPTG and X-Gal will grow as either white colonies or blue colonies. pBLU is a plasmid that contains part of a gene called beta-galactosidase. The portion of the plasmid that contains this gene is called the multiple cloning site (MCS). (If you want to introduce foreign DNA into the plasmid, this is where you would introduce it.) The plasmid also has a gene for antibiotic resistance. The bacteria you use for transform with this plasmid must not already have this type of antibiotic resistance. If the bacteria are transformed with pBLU and plated on media with anibiotics only the bacteria that recieved the plasmid will grow. Those that were not transformed will die. If no DNA was inserted into the MCS of the plasmid then the for producing beta-galactosidase will be intact. This gene is called Lac Z. The transcription of this gene must be induced with a chemical called IPTG. So if the agar plate contained IPTG then the Lac Z gene will be induced and the protein beta-galactosidase will be produced. If this protein is produced it will cleave the chemical X-Gal (which was also on the plate) causing the X-gal to change from clear to blue.This causes the colonies to have a blue phenotype.\nIf the Lac Z gene was interrupted by foreign DNA in the MCS then no beta-galactosidase will be produced and the colonies will grow white.
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2H3PO4(aq) + 3Mn(OH)2(s)  --> Mn3(PO4)2(s) + 6H2O(l)
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its proto-oncogene, read here\n\nhttp://en.wikipedia.org/wiki/Tumour_suppressor_gene\n\nhttp://en.wikipedia.org/wiki/Proto-oncogene
228249
I think your questions is how are genes methylated? There is a class of enzymes called DNA methytransferases that does this.
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the first one is RNA. You can tell by the U at the end of the sequence
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Wow, this answer is gonna be a long one...   There are numerous studies of the charting of the positions of genes on a DNA molecule or chromosome and the distance between genes of Escherisia Coli. It basically comes down to good old conjugation and transduction.  Having sequenced the E. coli K-12 genome, scienctists are creating a knockout of every gene, a clone of every ORF, and an extensive gene expression data set under a variety of physiological conditions. These clones and data sets are made available freely to the community.  Scienctists have also sequenced six additional enterobacterial strains which are pathogens closely related to E. coli K-12, and many plasmids. The comparative genomics aim of this effort is to characterize the gene pool of horizontally transferred elements and virulence determinants known as the pathosphere.\n\nI put a reference on it so be sure to check it out yourself. \n\nA mutator gene, mutD5, whose phenotype is conditional, has been identified in Escherichia coli. By P1 transduction it has been shown to lie at about 5.7 min on the chromosome, being co-transduced with proA and argF. In rich medium, streptomycin- and nalidixic acid-resistant mutation frequencies are 50 to 100 times higher than those in minimal medium. In minimal medium, the mutD5-induced mutation frequencies are still 50 to 100 times above co-isogenic wild-type (mut+) levels. Similar results were obtained with all markers tested. Mutant frequencies can be raised by thymidine in the medium at concentrations as low as 0.04 μM, or by the endogenous generation of thymidine from thymine plus a deoxyribosyl donor. Deoxyadenosine, various ribonucleosides, thymine, and 2-deoxyribose do not stimulate mutation. None of these effects are related to growth rate, since growth rate and mutation rate can be decoupled completely.\n\nThe gntP gene, located between the fim and uxu loci in Escherichia coli K-12, has been cloned and characterized. Nucleotide sequencing of a region encompassing the gntP gene revealed an open reading frame of 447 codons with significant homology to the Bacillus subtilis gluconate permease. Northern (RNA) blotting indicated that the gntP gene was monocistronic and was transcribed as an mRNA with an apparent molecular size of 1.54 kb. The transcriptional start point was determined by primer extension analysis. The gntP gene was found to be under catabolite repression and was not induced by gluconate. Also, expression seemed to be stringently controlled. Several observations indicated that the GntP protein is an inner membrane protein; it contains characteristic membrane-spanning regions and was isolated predominantly from the inner-membrane fraction of fractionated host cells. A topology analysis predicted a protein with 14 membrane-spanning segments. The inability of a mutant strain to grow on gluconate minimal medium could be relieved by introduction of a plasmid encoding the gntP gene. Finally, the kinetics of GntP-mediated gluconate uptake were investigated, indicating an apparent Km for gluconate of 25 microM.
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40.\nhttp://www.research.att.com/~njas/sequences/b000602.txt
801993
If this is a true genomic sequence, you can only start at a start codon, which is ATG.\n\nBut, this appears to be a template sequence, so we'll do transcription now:\n\nThe corresponding mRNA is:\nAUG AAU GGC UCU AAG AAG AAA UAG\n\nAUG is a valid start codon.  And by the way, that's methionine (Met or M).\n\nNow the rest:\nAAU=Asparagine (Asn or N)\nGGC=Glycine (Gly or G)\nUCU=Serine (Ser or S)\nAAG=Lysine (Lys or K)\nAAG=Lysine again (Lys or K)\nAAA=Lysine again (Lys or K)\nUAG=Stop codon\n\nSo the end sequence is Met-Asn-Gly-Ser-Lys-Lys-Lys, or in single-letters, MNGSKKK.