Group III intron is a class of introns found in mRNA genes of chloroplasts in euglenid protists. They have a conventional group II-type dVI with a bulged adenosine, a streamlined dI, no dII-dV, and a relaxed splice site consensus.[1]: fig. 2 Splicing is done with two transesterification reactions with a dVI bulged adenosine as initiating nucleophile; the intron is excised as a lariat.[2] Not much is known about how they work,[1] although an isolated chloroplast transformation system has been constructed.[3]
^ abCopertino DW, Hallick RB (December 1993). "Group II and group III introns of twintrons: potential relationships with nuclear pre-mRNA introns". Trends Biochem. Sci. 18 (12): 467–71. doi:10.1016/0968-0004(93)90008-b. PMID 8108859.
^Cite error: The named reference pmid7512259 was invoked but never defined (see the help page).
^Doetsch, NA; Favreau, MR; Kuscuoglu, N; Thompson, MD; Hallick, RB (February 2001). "Chloroplast transformation in Euglena gracilis: splicing of a group III twintron transcribed from a transgenic psbK operon". Current Genetics. 39 (1): 49–60. doi:10.1007/s002940000174. PMID 11318107. S2CID 6413004.
GroupIIIintron is a class of introns found in mRNA genes of chloroplasts in euglenid protists. They have a conventional group II-type dVI with a bulged...
are four main types of introns: tRNA introns, group I introns, group II introns, and spliceosomal introns (see below). Introns are rare in Bacteria and...
Baltimore classification. GroupIIIintrons, a class of introns found in mRNA genes of chloroplasts in euglenoid protists. GroupIII motor oil base stock as...
Group I introns are large self-splicing ribozymes. They catalyze their own excision from mRNA, tRNA and rRNA precursors in a wide range of organisms....
Group II introns are a large class of self-catalytic ribozymes and mobile genetic elements found within the genes of all three domains of life. Ribozyme...
individual groupIIIintrons has been characterized. The external intron was interrupted by an internal intron containing two additional introns. In 1995...
are three kinds of self-splicing introns, Group I, Group II and GroupIII. Group I and II introns perform splicing similar to the spliceosome without...
between intron encoded proteins and the size of group 2 introns seen in host cells. When these introns are capable of encoding for their own intron encoded...
core of the group II intron shown in the figure at left (ii) a catalytically essential triple helix observed in human telomerase RNA (iii) the SAM-II...
The most common FD-causing mutation occurs in intron 20 of the donor gene. Conversion of T→C in intron 20 of the donor gene resulted in shift splicing...
the Afro-Malagasy Members of the Large Genus Begonia Inferred from trnL Intron Sequences A Phylogeny of Begonia Using Nuclear Ribosomal Sequence Data and...
These hammerhead ribozymes (the so-called HH9 and HH10) occur in the introns of a few specific genes and point to a preserved biological role during...
and catalytic mechanism of U6 snRNA resembles that of domain V of group II introns. The formation of the triple helix in U6 snRNA is deemed to be important...
structure motif that is important for recognition and precise splicing of tRNA intron by endonucleases. This motif position and structure are evolutionarily conserved...
Neurospora. VS ribozyme contains features of both catalytic RNAs and group 1 introns. VS ribozyme has both cleavage and ligation activity and can perform...
Dilleniaceae Using Sequence Data from Four Plastid Loci (rbcL, infA, rps4, rpl16 Intron)". International Journal of Plant Sciences. 170 (6): 794–813. doi:10.1086/599239...
several structural and sequence homologies to the group I introns such as the self-splicing intron of Tetrahymena thermophila. A phylogeny based on a...
homing endonucleases are a special type of restriction enzymes encoded by introns or inteins. They act on the cellular DNA of the cell that synthesizes them;...
U12-type introns. The two types of introns mainly differ in their splicing sites: U2-type introns have GT-AG 5′ and 3′ splice sites while U12-type introns have...
recruitment of machinery necessary for RNA splicing, a process by which introns are removed to produce a mature mRNA. The addition of the cap onto mRNA...
the Afro-Malagasy members of the large genus Begonia inferred from trnL intron sequences". Systematic Botany. 28 (4): 693–704. doi:10.1043/02-56.1 (inactive...
(2003). "The phylogeny of the Alstroemeriaceae, based on morphology, rps16 intron, and rbcL sequence data". Syst. Bot. 28 (58). Sanso, A. M.; C. C. Xifreda...
responsible for production of the functional product. The discovery of introns in the 1970s meant that many eukaryotic genes were much larger than the...
at or near the intron-insertion site of alleles lacking an intron. Mobile introns are frequently members of either the group I or group II families of...
southwesternmost populations of P. occidentalis s.l. – carries nuclear intron sequences (second intron of the Leafy gene) of PNA-E origin. It lacks the plastid haplotype...
"Molecular Phylogenetics of Lentibulariaceae Inferred from Plastid rps16 Intron and trnL-F DNA Sequences: Implications for Character Evolution and Biogeography"...
Global Information