Class II gene
Encyclopedia
A class II gene is a type of gene
that codes for a protein
. Class II genes are transcribed
by RNAP II.
Class II genes have a promoter that often contains a TATA box
.
Basal transcription of class II genes requires the formation of a preinitiation complex
.
They are transcribed by RNA polymerase II, include both intron and exon, and code for polypeptide.
Gene
A gene is a molecular unit of heredity of a living organism. It is a name given to some stretches of DNA and RNA that code for a type of protein or for an RNA chain that has a function in the organism. Living beings depend on genes, as they specify all proteins and functional RNA chains...
that codes for a protein
Protein
Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...
. Class II genes are transcribed
Transcription (genetics)
Transcription is the process of creating a complementary RNA copy of a sequence of DNA. Both RNA and DNA are nucleic acids, which use base pairs of nucleotides as a complementary language that can be converted back and forth from DNA to RNA by the action of the correct enzymes...
by RNAP II.
Class II genes have a promoter that often contains a TATA box
TATA box
The TATA box is a DNA sequence found in the promoter region of genes in archaea and eukaryotes; approximately 24% of human genes contain a TATA box within the core promoter....
.
Basal transcription of class II genes requires the formation of a preinitiation complex
Preinitiation complex
The preinitiation complex is a large complex of proteins that is necessary for the transcription of protein-coding genes in eukaryotes...
.
They are transcribed by RNA polymerase II, include both intron and exon, and code for polypeptide.