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A DNA sequencer is a scientific instrument used to automate the DNA sequencing process. Given a sample of DNA , a DNA sequencer is used to determine the order of the four bases: G ( guanine ), C ( cytosine ), A ( adenine ) and T ( thymine ).
Automated DNA-sequencing instruments (DNA sequencers) can sequence up to 384 DNA samples in a single batch. Batch runs may occur up to 24 times a day. Batch runs may occur up to 24 times a day. DNA sequencers separate strands by size (or length) using capillary electrophoresis , they detect and record dye fluorescence, and output data as ...
The company shipped the first gas phase protein sequencer, Model 4790A, in August 1982. The 380 DNA synthesizer was commercialized in 1983, the 430A peptide synthesizer in 1984, and the 370A DNA sequencing system in 1986. [56] [5] These new instruments had a major impact on the emerging fields of proteomics and genomics.
Polony sequencing is generally performed on paired-end tags library that each molecule of DNA template is of 135 bp in length with two 17–18 bp paired genomic tags separated and flanked by common sequences. The current read length of this technique is 26 bases per amplicon and 13 bases per tag, leaving a gap of 4–5 bases in each tag.
The two sequencer and synthesizer products allowed molecular biologists to clone genes by building oligonucleotides with the desired protein's DNA sequence. [1] Automated DNA sequencing began at the California Institute of Technology, using fluorescent dyes, with Rights to the technology granted to Applied Biosystems. [1]
The DNA sequencing is done on a chip that contains many ZMWs. Inside each ZMW, a single active DNA polymerase with a single molecule of single stranded DNA template is immobilized to the bottom through which light can penetrate and create a visualization chamber that allows monitoring of the activity of the DNA polymerase at a single molecule level.
In 1982, Smith did post-doctorate work with Leroy Hood at the California Institute of Technology, where he created the world's first fluorescence-based automated DNA sequencing instrument. [ 2 ] [ 4 ] [ 5 ] During the early 80s he also worked as a consultant for Applied Biosystems , who were able to commercialise the sequencing process he ...
Sequence assembly refers to the reconstruction of a DNA sequence by aligning and merging small DNA fragments. It is an integral part of modern DNA sequencing. Since presently-available DNA sequencing technologies are ill-suited for reading long sequences, large pieces of DNA (such as genomes) are often sequenced by (1) cutting the DNA into ...
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