| ribonuclease (pancreatic) | |
|---|---|
| ribonuclease, pancreatic | <enzyme> An enzyme that catalyses the endonucleolytic cleavage of pancreatic ribonucleic acids to 3'-phosphomono- and oligonucleotides ending in cytidylic or uridylic acids with 2',3'-cyclic phosphate intermediates. Registry number: EC 3.1.27.5 (12 Dec 1998) |
| Bacillus pumilus ribonuclease | <enzyme> The extracellular ribonuclease of b. Pumilus kmm62; shares 98% structural identity with binase, 72% with barnase; genbank u06867 Registry number: EC 3.1.4.- Synonym: bacillus pumilus rnase, rnase bp (26 Jun 1999) |
| Pac1 ribonuclease | <enzyme> A homolog of e. Coli rnase III from schizosaccharomyces pombe; amino acid sequence given in first source Registry number: EC 3.1.26.- Synonym: rnase pac1, pac1 gene product (26 Jun 1999) |
| ribonuclease | <biochemistry, enzyme, molecular biology> Widely distributed type of enzyme that cleaves RNA. May act as endonucleases or exonucleases depending upon the type of enzyme. Generally recognise target by tertiary structure rather than sequence. Ribonuclease E is involved in the formation of 5S ribosomal RNA from pre rRNA. Ribonuclease F is stimulated by interferons and cleaves viral and host RNA and thus inhibits protein synthesis. Ribonuclease H specifically cleaves an RNA base paired to a complementary DNA strand. Ribonuclease P is an endonuclease that generate t RNA from their precursor transcripts. Ribonuclease T is an endonuclease that removes the terminal AMP from the 3' CCA end of a nonaminoacylated tRNA. Ribonuclease T1 cleaves RNA specifically at guanosine residues. Ribonuclease TIII cleaves double stranded regions of RNA molecules. Acronym: RNase (23 Aug 1998) |
| ribonuclease (Bacillus subtilis) | 1. Ribonuclease (Azotobacter agilis); ribonuclease (Proteus mirabilis); an enzyme catalyzing the endonucleolytic cleavage of RNA to yield 2',3'-cyclic nucleotides. 2. Ribonuclease T1. (05 Mar 2000) |
| ribonuclease D | <enzyme> An enzyme (endonuclease) that trims the extra 3' nucleotides from immature tRNA. (05 Mar 2000) |
| ribonuclease h, calf thymus | <enzyme> A ribonuclease that specifically cleaves the RNA moiety of RNA:DNA hybrids. It has been isolated from a wide variety of prokaryotic and eukaryotic organisms (particularly calf thymus) as well as retroviruses. Registry number: EC 3.1.26.4 (12 Dec 1998) |
| ribonuclease t1 | <enzyme> An enzyme catalyzing the endonucleolytic cleavage of RNA at the 3'-position of a guanylate residue. Chemical name: Ribonucleate 3'-guanylo-oligonucleotidohydrolase Registry number: EC 3.1.27.3 (12 Dec 1998) |
| RNS1 ribonuclease | <enzyme> Sharply reduced during phosphate starvation in arabidopsis; also induced during plant senescence; amino acid sequence given in first source Registry number: EC 3.1.- Synonym: rnase rns1 (26 Jun 1999) |
| RNS3 ribonuclease | <enzyme> Remains constant during phosphate starvation in arabidopsis; induced slightly during senescence; amino acid sequence given in first source Registry number: EC 3.1.- Synonym: rnase rns3 (26 Jun 1999) |
| poly(A)-specific ribonuclease | <enzyme> From vigna unguiculata seedlings; bifunctional enzyme responsible for both poly(a)-polymerizing and poly(a)-hydrolyzing activities; removes the poly(a) tail as the first step in degrading mRNA Registry number: EC 3.1.13.4 Synonym: poly(a) nuclease, mRNA poly(a) nuclease, poly(a) ribonuclease (pan), pan2 protein (26 Jun 1999) |
| pyrimidine-guanine sequence-specific ribonuclease | <enzyme> From yolk granules of adult rana catesbeiana oocytes Registry number: EC 3.1.27.- Synonym: rc-rnase, rana catesbeiana rnase (26 Jun 1999) |
| des(121-124)-ribonuclease | <enzyme> Deriv of ribonuclease EC 3.1.4.22 Registry number: EC 3.1.4.- Synonym: des(121-124)-rnase (26 Jun 1999) |
| accessory pancreatic duct | The excretory duct of the head of the pancreas, one branch of which joins the pancreatic duct, the other opening independently into the duodenum at the lesser duodenal papilla. Synonym: ductus pancreaticus accessorius, Bernard's canal, Bernard's duct, ductus dorsopancreaticus, Santorini's canal, Santorini's duct. (05 Mar 2000) |