Enzyme RNA Polymerase and protein transcription factor.
In eukaryotes, a core promoter sequence in the DNA must be present for RNA polymerase to initiate transcription. Promoters are regions of DNA that promote transcription-in eukaryotes, they are found at -30, -75, and -90 base pairs upstream from the transcription start site (abbreviated to TSS). 1 One or more sigma factor protein binds to the RNA polymerase holoenzyme, allowing it to bind to promoter DNA. 2  RNA polymerase creates a transcription bubble, which separates the two strands of the DNA helix. 3  This is done by breaking the hydrogen bonds between complementary DNA nucleotides. Although transcription is performed by RNA Polymerase, the enzyme needs other proteins to produce the transcript. These factors are either associated directly with RNA Polymerase or add in building the actual transcription apparatus. The general term for these associated proteins is transcription factor. The definition is reflects the interaction of the all of the important proteins and the DNA to which the bind. Promoter-all the DNA sequences containing binding sites for RNA polymerase and the transcription factors necessary for normal transcription Copyright © 1998. During transcription, a DNA sequence is read by an RNA polymerase, which produces a complementary, antiparallel RNA strand called a primary transcript. Transcription proceeds in the following general steps: 1  One or more sigma factor protein binds to the RNA polymerase holoenzyme, allowing it to bind to promoter DNA. 1 One or more sigma factor protein binds to the RNA polymerase holoenzyme, allowing it to bind to promoter DNA. 2  RNA polymerase creates a transcription bubble, which separates the two strands of the DNA helix. 3  This is done by breaking the hydrogen bonds between complementary DNA nucleotides. The mechanism of transcription has parallels in that of DNA replication. As with DNA replication, partial unwinding of the double helix must occur before transcription can take place, and it is the RNA polymerase enzymes that catalyze this process. The process by which mRNA directs protein synthesis with the assistance of tRNA is called translation. The ribosome is a very large complex of RNA and protein molecules. Each three-base stretch of mRNA (triplet) is known as a codon, and one codon contains the information for a specific amino acid. The piece of mRNA that results from the direct transcription of the DNA that encodes a gene is called the primary transcript and it undergoes modification, sometimes quite extensively, before it can translate its message into protein. The class of enzymes that synthesize RNAs are known as RNA polymerases. Recruitment of RNA Polymerase II to the Promoter: Eukaryotes do not have a simple protein that corresponds to the s factor in prokaryotes. Rather, there is a set of proteins that together perform the same function as the s factor, and these are the general transcription factors (GTFs). During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink). The pre-mRNA is processed to form a mature mRNA molecule that can be translated to build the protein molecule (polypeptide) encoded by the original gene. In the simplest sense, expressing a gene means manufacturing its corresponding protein, and this multilayered process has two major steps. In the first step, the information in DNA is transferred to a messenger RNA (mRNA) molecule by way of a process called transcription. RNA polymerase is the core enzyme in transcription which needs proteins known as transcription factors to bind to the DNA promoter. also DNA plymerase... can't remember what about it though. DNA polymerase isn't involved in DNA transcription. However, DNA polymerase IS involved in DNA REPLICATION.  Transcription is the process by which DNA is copied (transcribed) to mRNA, which carries the information needed for protein synthesis. Transcription takes place in two broad steps. First, pre-messenger RNA is formed, with the involvement of RNA polymerase enzymes. The process relies on Watson-Crick base pairing, and the resultant single strand of RNA is the reverse-complement of the original DNA sequence. The process by which mRNA directs protein synthesis with the assistance of tRNA is called translation. The ribosome is a very large complex of RNA and protein molecules. Each three-base stretch of mRNA (triplet) is known as a codon, and one codon contains the information for a specific amino acid. In bacteria, transcription begins with the binding of RNA polymerase to the promoter in DNA. RNA polymerase is a core enzyme consisting of five subunits: 2 α subunits, 1 β subunit, 1 β' subunit, and 1 ω subunit. 1 One or more sigma factor protein binds to the RNA polymerase holoenzyme, allowing it to bind to promoter DNA. 2  RNA polymerase creates a transcription bubble, which separates the two strands of the DNA helix. 3  This is done by breaking the hydrogen bonds between complementary DNA nucleotides. Most enzymes are proteins, but RNA molecules can be enzymes too.The ribosome is not only complex, but it is also the most important part of the biological cell, along with the necessary information needed to make proteins (encoded in DNA or RNA). Ribosomes make proteins and proteins make cells. 
https://en.wikipedia.org/wiki/Transcription_(genetics) https://www.ndsu.edu/pubweb/~mcclean/plsc731/transcript/transcript1.htm https://en.wikipedia.org/wiki/Transcription_(genetics) http://www.atdbio.com/content/14/Transcription-Translation-and-Replication http://homepages.rpi.edu/~bellos/transcription.htm http://www.nature.com/scitable/topicpage/Translation-DNA-to-mRNA-to-Protein-393 http://www.answers.com/Q/What_enzymes_are_used_in_transcription http://www.atdbio.com/content/14/Transcription-Translation-and-Replication https://en.wikipedia.org/wiki/Transcription_(genetics) http://cronodon.com/BioTech/Ribosomes.html
what enzymes and proteins are needed for transcription