the gene where transcription begins, it is said to be at the 5' end of the gene; thus, the promoter region is also called the 5' regulatory region (Figure 8-7a). The first transcribed base is always at the same location, designated the initia- tion site. The promoter is referred to as upstream of the initiation site because it is located ahead of the initiation site (5' of the gene), in the direction opposite the direction of transcription. A downstream site would be located later in the direc- tion of transcription. By convention, the first DNA base to be transcribed is FIGURE 8-6 The MRNA sequence is complementary to the DNA template strand from which it is transcribed and therefore matches the sequence of the nontemplate strand (except that the RNA has U where the DNA has T). This sequence is from the gene for the enzyme B-galactosidase. Sequences of DNA and transcribed RNA Nontemplate strand 5' CTGCCATTGTCAGACATGTATACCCCGTACGTCTTCCCGAGCGAAAACGATCTGCGCTGC- 3 Coding strand DNA Template strand 3' Noncoding strand GACGGTAACAGTCTGTACATATGGGGCATGCAGAAGGGCTCGCTTTTGCTAGACGCGACG - 5' 5 CUGCCAUUGUCAGACAUGUAUACCCCGUACGUCUUCCCGAGCGAAAACGAUCUGCGCUGC-3' MRNA

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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In Figure 8-6, describe where the gene promoter is
located.

the gene where transcription begins, it is said to be at the 5' end of the gene; thus,
the promoter region is also called the 5' regulatory region (Figure 8-7a).
The first transcribed base is always at the same location, designated the initia-
tion site. The promoter is referred to as upstream of the initiation site because it
is located ahead of the initiation site (5' of the gene), in the direction opposite the
direction of transcription. A downstream site would be located later in the direc-
tion of transcription. By convention, the first DNA base to be transcribed is
FIGURE 8-6 The MRNA sequence is
complementary to the DNA template
strand from which it is transcribed and
therefore matches the sequence of the
nontemplate strand (except that the RNA
has U where the DNA has T). This
sequence is from the gene for the enzyme
B-galactosidase.
Sequences of DNA and transcribed RNA
Nontemplate strand
5'
CTGCCATTGTCAGACATGTATACCCCGTACGTCTTCCCGAGCGAAAACGATCTGCGCTGC- 3
Coding strand
DNA
Template strand
3'
Noncoding strand
GACGGTAACAGTCTGTACATATGGGGCATGCAGAAGGGCTCGCTTTTGCTAGACGCGACG - 5'
5
CUGCCAUUGUCAGACAUGUAUACCCCGUACGUCUUCCCGAGCGAAAACGAUCUGCGCUGC-3' MRNA
Transcribed Image Text:the gene where transcription begins, it is said to be at the 5' end of the gene; thus, the promoter region is also called the 5' regulatory region (Figure 8-7a). The first transcribed base is always at the same location, designated the initia- tion site. The promoter is referred to as upstream of the initiation site because it is located ahead of the initiation site (5' of the gene), in the direction opposite the direction of transcription. A downstream site would be located later in the direc- tion of transcription. By convention, the first DNA base to be transcribed is FIGURE 8-6 The MRNA sequence is complementary to the DNA template strand from which it is transcribed and therefore matches the sequence of the nontemplate strand (except that the RNA has U where the DNA has T). This sequence is from the gene for the enzyme B-galactosidase. Sequences of DNA and transcribed RNA Nontemplate strand 5' CTGCCATTGTCAGACATGTATACCCCGTACGTCTTCCCGAGCGAAAACGATCTGCGCTGC- 3 Coding strand DNA Template strand 3' Noncoding strand GACGGTAACAGTCTGTACATATGGGGCATGCAGAAGGGCTCGCTTTTGCTAGACGCGACG - 5' 5 CUGCCAUUGUCAGACAUGUAUACCCCGUACGUCUUCCCGAGCGAAAACGAUCUGCGCUGC-3' MRNA
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