Where is pBR322 found?
Where is pBR322 found?
University of California, San Francisco
pBR322 is a plasmid and was one of the first widely used E. coli cloning vectors. Created in 1977 in the laboratory of Herbert Boyer at the University of California, San Francisco, it was named after Francisco Bolivar Zapata, the postdoctoral researcher and Raymond L. Rodriguez.
How many cloning sites are there in pBR322?
There are two sites in this vector for the restriction enzymes HindIII and ClaI within the promoter of the TetR gene. To make an ideal plasmid various plasmids are constructed for cloning purposes, and the most commonly used plasmid used is the pBR322. So, the correct answer is ‘(B) Boliver and Rodriguez’.
How many base pairs are in pBR322?
4,361* base pairs
coli (1). The molecule is a double-stranded circle 4,361* base pairs in length (2). pBR322 contains the genes for resistance to ampicillin and tetracycline, and can be amplified with chloramphenicol.
Why is it called pBR322?
The vector pBR322 was named according to the standard rules for vector nomenclature. The “p” stands for plasmid. “BR” tells us which laboratory the vector was constructed in. This part of the vector name stands for Bolivar and Rodriguez, two of the scientists who constructed the pBR322 cloning vector in 1977.
What is the size of pBR322 in KB?
Advantages of pBR322: 4. 1. Small size (~ 4.4 kb) enables easy purifi-cation and manipulation.
How does pBR322 work as a cloning vector?
The pBR322 plasmid contains a gene that allow the bacteria to be resistant to the antibiotics tetracycline and amipicillin. To use pBR322 plasmid to clone a gene, a restriction endonuclease first cleaves the plasmid at a restriction site. Another plasmid used as a vector to clone DNA is called pUC18 plasmid.
What is insert size of pBR322?
pBR322 DNA is a commonly used plasmid cloning vector in E. coli (1). The molecule is a double-stranded circle 4,361* base pairs in length (2). pBR322 contains the genes for resistance to ampicillin and tetracycline, and can be amplified with chloramphenicol.
What is the size of pBR322?
4361 bp
pBR322 is 4361 bp in length and contains: The circular sequence is numbered such that 1 is the first T of the unique EcoRI site GAATTC and numbering increases through the tet gene and the pMB1 material and finally through the Tn3 region.
What is B in pBR322?
pBR322 is a plasmid and was one of the first widely used E. coli cloning vectors. The p stands for “plasmid,” and BR for “Bolivar” and “Rodriguez, the scientists who synthesized the plasmid.
Is pBR322 a cloning vector?
pBR322 DNA is a commonly used plasmid cloning vector in E. coli (1). The molecule is a double-stranded circle 4,361* base pairs in length (2). pBR322 contains the genes for resistance to ampicillin and tetracycline, and can be amplified with chloramphenicol.
Where are the restriction sites on the vector pBR322?
The vector pBR322 was constructed in order to have a plasmid with a single PstI site, located in the ampicillin-resistant gene (Apr), in addition to four unique restriction sites, EcoRI, HindIII, BamHI and SalI.
Are there any transposable genes in vector pBR322?
The antibiotic-resistant genes on pBR322 are not transposable. The vector pBR322 was constructed in order to have a plasmid with a single PstI site, located in the ampicillin-resistant gene (Apr), in addition to four unique restriction sites, EcoRI, HindIII, BamHI and SalI.
How did the pBR322 plasmid get its name?
pBR322 is a plasmid and was one of the first widely used E. coli cloning vectors. Created in 1977 in the laboratory of Herbert Boyer at the University of California, San Francisco, it was named after Francisco Bolivar Zapata, the postdoctoral researcher who constructed it. The p stands for “plasmid,” and BR for “Bolivar” and “Rodriguez.”
What is the sequence of polylinkers in PBR322?
The sequences of the polylinkers or multiple cloning site regions of several pUC vectors, pUC12/13 and pUC18/19. The corresponding single-stranded M13 phage has the same polylinker sequence.