Term
DNA gyrase
(topoisomerase II) |
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Definition
causes supercoiling of DNA
condenses DNA |
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Term
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Definition
| positively charged particles around which the DNA is wrapped to neutralize the negative charge |
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Term
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Definition
structures formed by winding of DNA around histones
spaces along DNA double helix at regular intervals |
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Term
archaeal histones form clusters of 4 (tetrasomes)
eukaryotic histones form clusters of 8
bacteria do not have true histones |
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Definition
| how do histones differ in archaea and eukarya and bacteria |
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Term
archaea can have multiple origins of replication
bacteria can only have one OriC |
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Definition
| what is the difference in origin of replication in archaea vs. bacteria? |
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Term
bacteria us DNA Pol III --> family C
archaea and eukarya use DNA Pol family B |
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Definition
| What DNA polymerase is primarily used in bacteria, archaea, and eukarya? |
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Term
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Definition
| 6-8 bp promoter site in archaea located 18-27 nucleotides upstream of start site |
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Term
| TATA-binding protein (TBP) |
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Definition
| protein that recognizes TATA box in archaea |
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Term
| B recognition element (BRE) |
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Definition
| promoter in archaea located upstream of TATA box |
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Term
| transcription factor B (TFB) |
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Definition
| recognizes B recognition element and initiator element promoter site in archaea |
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Term
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Definition
| promoter region located at start of transcription in archaea |
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Term
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Definition
| coding sequences in eukarya |
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Term
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Definition
| noncoding regions in eukarya |
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Term
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Definition
| excises archaeal introns (which are rare except in tRNA and rRNA endcoding genes) |
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Term
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Definition
| protein that connects exons |
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Term
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Definition
| common motif in tRNA precursor indicating splice sites to remove circular intron |
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Term
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Definition
| complex of DNA plus histones |
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Term
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Definition
| highly condenses chromatin that cannot be transcribed |
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