Words similar to transferases
Example sentences for: transferases
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The classical adenylyl cyclases, guanylyl cyclases and the GGDEF (diguanylate cyclase) domains share the catalytic palm domain with the family B DNA polymerases, reverse transcriptases, viral RNA dependent RNA polymerases and eukaryote-type primases [ 4 13 14 ] . The pathogenic adenylyl cyclases of several bacteria and the CyaA-like proteobacteria adenylyl cyclases are extremely divergent versions of the catalytic domain seen in the Pol-β family of nucleotidyl transferases [ 15 ] (also see SCOP database: http://scop.mrc-lmb.cam.ac.uk/scop/).
The human FHIT gene, located at the chromosome 3 fragile site FRA3B, is inactivated early in the development of many tumors [ 1 ] . Murine Fhit is also located at a fragile site [ 2 3 ] and mice heterozygous for disruption of Fhit , given low intragastric doses of the mutagen N-nitrosomethylbenzylamine, develop stomach and sebaceous tumors [ 4 ] that can be prevented by viral Fhit expression [ 5 ] . Fhit, a dimer of 147 amino acid subunits, is a member of the histidine triad (HIT) superfamily of nucleotide hydrolases and transferases [ 6 7 ] . Members of the Hint branch of the HIT superfamily are found in all forms of life [ 8 ] . The S. cerevisiae Hint homolog, Hnt1, and rabbit Hint possess adenosine monophosphoramidase activity that functions in yeast to positively regulate function of Kin28, Ccl1 and Tfb3, which constitute the kinase component of general transcription factor TFIIH [ 9 ] . A new Hint related protein, Aprataxin, is mutated in individuals with ataxia with oculomotor apraxia [ 10 11 ] and has a yeast homolog termed Hnt3 [ 9 ] . Members of the Fhit branch of the HIT superfamily have been found in fungi [ 12 13 ] , animals [ 2 14 15 ] and plants [ 7 ] and hydrolyze diadenosine tetraphosphate, diadenosine triphosphate and other 5'-5"'-dinucleoside polyphosphates.
Histidine triad (HIT) enzymes are a superfamily of nucleotide hydrolases and transferases that contain a catalytic motif related to the sequence HisφHisφHisφφ (where φ represents a hydrophobic amino acid) and act on substrates containing a nucleoside monophosphate [ 24].
Template-independent RNA polymerases (nucleotidyltransferases) include CCA-adding enzymes, polyA polymerases, uridylyl transferases and oligoA-synthetases.
Similar observations were obtained for other gene clusters, including amylases on 1p21, annexins on 4q21, homeobox proteins on 7p15 and 17q21, metallothioneins on 16q13, crystalline proteins on 2q33, glutathione- S -transferases (m1, m2, m3, m4 and m5) on 1p13, histone families (H2A/H2B/H3/H4) on 6p21, killer cell lectin-like receptors on 12p13, proline-rich proteins on 12p13, protocadherins on 5p15, s100 calcium-binding proteins on 1q21, keratins on 17q12, ADP-ribosylation factors (3, 4 and 5) on 10q22, and the major histocompatibility complex on 6p21.
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