Transcription in Bacteria

Transcription is the synthesis of RNA under the direction of DNA. RNA synthesis, or transcription, is the process of transcribing DNA nucleotide sequence information into RNA sequence information. Both nucleic acid sequences use complementary language, and the information is simply transcribed, or copied, from one molecule to the other. DNA sequence is enzymatically copied by RNA polymerase to produce a complementary nucleotide RNA strand, called messenger RNA (mRNA), because it carries a genetic message from the DNA to the protein-synthesizing machinery of the cell. One significant difference between RNA and DNA sequence is the presence of U, or uracil in RNA instead of the T, or thymine of DNA. In the case of protein-encoding DNA, transcription is the first step that usually leads to the expression of the genes, by the production of the mRNA intermediate, which is a faithful transcript of the gene's protein-building instruction. The stretch of DNA that is transcribed into an RNA molecule is called a transcription unit. A DNA transcription unit that is translated into protein contains sequences that direct and regulate protein synthesis in addition to coding the sequence that is translated into protein.

Category:

Film & Animation

Tags:

• transcription
• protein synthesis
• gene expression
• mRNA synthesis

[raysnays]

oh dear, the initiation process described in this video is NOT for prokaryotes (bacteria), its for eukaryotes. For bacteria: we have the sigma molecule that helps bind the RNA polymerase onto a specific gene. In eukaryotes, we have the TATA box

[dnyanopasakmicrobiol]

@raysnays @raysnays raysnays is absolutely correct and in Bacteria it is the The Pribnow box (also known as the Pribnow-Schaller box) is the sequence TATAAT of six nucleotides (thymine-adenine-thymine-etc.) that is an essential part of a promoter site on DNA for transcription to occur in bacteria. The Pribnow box has a function similar to the TATA box that occurs in promoters in eukaryotes and archaea.

[lahore50]

good presentation..haris USA.

[Hoopermazing]

Brains and beauty.

[01059871]

Más lento chingaooo!, Regarding the "ur hot" comment, se la baña la raza

[kawaietbelle]

hmm i thought in bacteria RNA pol binds to promoter on template strand of DNA and in eukaryotes RNA pol binds to TATA region..

[sickbay]

i found this hard to follow.

[masch777]

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[GreyMagick711]

Thanks for the help!

[YOungninfam0uz]

ur hot.