Kilobase

Kilobase (kb) Unit of length for DNA fragments equal to 1000 nucleotides.
Knockout Deactivation of specific genes; used in laboratory organisms to study gene function.
See also: gene, locus, model organisms
Updated 26-Aug-06 ...
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Kilobase (Kb or Kbp)
1000 nucleotides of DNA or RNA.
Kinase
An enzyme that transfers phosphate from ATP to another molecule.
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KILOBASE - Unit of 1000 nucleotide bases, either RNA or DNA.
KINASE - See PHOSPHORYLATION.
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Kilobase (kb): Unit of length for DNA fragments equal to 1000 nucleotides.
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They typically lie upstream of the gene and can have regulatory elements several kilobases away from the transcriptional start site.
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One first constructs a map of the chromosomes, marking them at regular intervals of about 100 kilobases (kb). Then, known segments of the marked chromosomes (which can contain very small fragments of DNA) are cloned in plasmids.
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Enhancers can act on promoters over many tens of kilobases of DNA and can be 5' or 3' to the promoter they regulate. A eukaryotic DNA sequence that increases transcription of a region even if the enhancer is distant from the region being transcribed.
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7 megabases (1,700,000 bases), while the mature (processed) neurexin mRNAs are under 10 kilobases (10,000 bases), with as many as 24 exons and thousands of possible alternative splice variants that produce proteins with different activities.
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Introns are spliced out of the RNA transcript during its processing to mRNA.
kbp kilobase pairs. A measure of size of double-stranded DNA.
Kinasing = phosphorylation.
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