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SEN2

Gene
sen2
Protein
Probable tRNA-splicing endonuclease subunit sen2
Organism
Schizosaccharomyces pombe (strain 972 / ATCC 24843)
Length
380 amino acids
Function
Constitutes one of the two catalytic subunit of the tRNA-splicing endonuclease complex, a complex responsible for identification and cleavage of the splice sites in pre-tRNA. It cleaves pre-tRNA at the 5'- and 3'-splice sites to release the intron. The products are an intron and two tRNA half-molecules bearing 2',3'-cyclic phosphate and 5'-OH termini. There are no conserved sequences at the splice sites, but the intron is invariably located at the same site in the gene, placing the splice sites an invariant distance from the constant structural features of the tRNA body. This subunit may anchor the endonuclease complex to the nuclear membrane. Probably carries the active site for 5'-splice site cleavage (By similarity).
Similarity
Belongs to the tRNA-intron endonuclease family.
Mass
44.608 kDa
Sequence
MSKNHEVYKDALPISLAYPLPPIILTNPLTWIPYIYRYLFRKTPRQVQWQCQLHESDLSCVVTDSEAIKKFWTSGFFGKGNLSRSEPTWHTRTKRSLGLLGFDEDLVAEEVTARRRFQRKQFKAQRAYRENRARERQLLLENGKPIPASLEEDAELPEYLTKSLKDFSRVSENPYHITSVPNVEHLQLTFPEAFFLASLGVLRINYENPNFELLPILKLFANIVANSVALTHDYSLQQSHEDPIIEPDNKFLTELAAYFYFRQQGWVVKNGTKFSVDFLLYKKGPVFSHAEFAILLIPCVGNKQKYNMQWHEVHCLNRVIAQVKKSLILCYVQCPSIEDFNKIWKNQASMNEWDWAESVLRQYLIRCVTLRRWVPSRNRD

Gene
SEN2
Protein
tRNA-splicing endonuclease subunit SEN2
Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Length
377 amino acids
Function
Constitutes one of the two catalytic subunit of the tRNA-splicing endonuclease complex, a complex responsible for identification and cleavage of the splice sites in pre-tRNA. It cleaves pre-tRNA at the 5'- and 3'-splice sites to release the intron. The products are an intron and two tRNA half-molecules bearing 2',3'-cyclic phosphate and 5'-OH termini. There are no conserved sequences at the splice sites, but the intron is invariably located at the same site in the gene, placing the splice sites an invariant distance from the constant structural features of the tRNA body. This subunit may anchor the endonuclease complex to the nuclear membrane. Probably carries the active site for 5'-splice site cleavage.
Similarity
Belongs to the tRNA-intron endonuclease family.
Mass
44.109 kDa
Sequence
MSKGRVNQKRYKYPLPIHPVDDLPELILHNPLSWLYWAYRYYKSTNALNDKVHVDFIGDTTLHITVQDDKQMLYLWNNGFFGTGQFSRSEPTWKARTEARLGLNDTPLHNRGGTKSNTETEMTLEKVTQQRRLQRLEFKKERAKLERELLELRKKGGHIDEENILLEKQRESLRKFKLKQTEDVGIVAQQQDISESNLRDEDNNLLDENGDLLPLESLELMPVEAMFLTFALPVLDISPACLAGKLFQFDAKYKDIHSFVRSYVIYHHYRSHGWCVRSGIKFGCDYLLYKRGPPFQHAEFCVMGLDHDVSKDYTWYSSIARVVGGAKKTFVLCYVERLISEQEAIALWKSNNFTKLFNSFQVGEVLYKRWVPGRNRD

Gene
SEN2
Protein
tRNA-splicing endonuclease subunit SEN2
Organism
Ashbya gossypii (strain ATCC 10895 / CBS 109.51 / FGSC 9923 / NRRL Y-1056)
Length
356 amino acids
Function
Constitutes one of the two catalytic subunit of the tRNA-splicing endonuclease complex, a complex responsible for identification and cleavage of the splice sites in pre-tRNA. It cleaves pre-tRNA at the 5'- and 3'-splice sites to release the intron. The products are an intron and two tRNA half-molecules bearing 2',3'-cyclic phosphate and 5'-OH termini. There are no conserved sequences at the splice sites, but the intron is invariably located at the same site in the gene, placing the splice sites an invariant distance from the constant structural features of the tRNA body. This subunit may anchor the endonuclease complex to the nuclear membrane. Probably carries the active site for 5'-splice site cleavage (By similarity).
Similarity
Belongs to the tRNA-intron endonuclease family.
Mass
41.096 kDa
Sequence
MAKRVAGSKRYVHPLPIEPVVLPPLIAHNPLSWVYWVLAYVTSSNQLPRKIPLEVGADGRYTVTGREQMQYLWEHGFFGTGQLSRSEPTWQARTVDRLQLDTEGIAGHKLEQVTQLRRKQRLEFKRERASFERKRLELRRQGVLESEILEQERLWLKQLRDRELQWEASTGDPSPVRAEDAEIIAEDGASVLPIEKLELMPVEALFLTLALPVLHADAPAILARTLGPQPALPQIERLCRLYAAYHHYRSHGWCVRSGIKFGCDFLLYRRGPPFHHAEFSVMVLAPDERHDYTWYSTVARVVGGAQKTLVLAYVARRAAADQLAALWHARRYMEAFALFEVHELVYRRWLPGKNRE

Gene
SEN2
Protein
tRNA-splicing endonuclease subunit Sen2-2
Organism
Arabidopsis thaliana
Length
250 amino acids
Function
Constitutes one of the two catalytic subunit of the tRNA-splicing endonuclease complex, a complex responsible for identification and cleavage of the splice sites in pre-tRNA. It cleaves pre-tRNA at the 5'- and 3'-splice sites to release the intron. The products are an intron and two tRNA half-molecules bearing 2',3'-cyclic phosphate and 5'-OH termini. There are no conserved sequences at the splice sites, but the intron is invariably located at the same site in the gene, placing the splice sites an invariant distance from the constant structural features of the tRNA body. Probably carries the active site for 5'-splice site cleavage (By similarity).
Similarity
Belongs to the tRNA-intron endonuclease family.
Mass
28.519 kDa
Sequence
MAPRWKWKGAEAKALAEPISKSVSELQLSLAETESSGTLSSCNVLLAVEPEQAELLDRCCFGRLVLSAEKIKKWIQLSFEEAFFLHYNLKCIKISLQGRCLENEVDTWLYMKSKRPNFPMFFKAYSHLRSKNWVLRSGLQYGVDFVAYRHHPSLVHSEYSVLVQSGDSDRLRVWSDIHCAVRLSGSVAKTLLTLYVNGNFKGEDVNLLVCLENFTVEEQTISRWSPELSREDQSTNSKQHVPNVSNLNTL