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  1. ...in the genome. The low-copy repeats on chromosome 22q11.2 (LCR22) are a complex mosaic of genes and pseudogenes formed by duplication processes; they mediate chromosome rearrangements associated with velo-cardio-facial syndrome/DiGeorge syndrome, der(22) syndrome, and cat-eye syndrome. The ability to trace...
  2. ...locations of known intrachromosomally duplicated gene segments are shown as solid boxes in relation to genetic markers of these regions. More intrachromosomal duplicated copies of the GGT-like repeat block [which consists of variable smaller repeat units of the γ-glutamyl transferase ( GGT ) and breakpoint...
  3. ...) Molecular definition of 22q11 deletions in 151 velo-cardio-facial syndrome patients. Amer. J. Hum. Genet. 61 : 620 – 629 . ↵ Collins J.E. , Mungall A.J. , Badcock K.L. , Fay J.M. , Dunham I. ( 1997 ) The organization of the gamma-glutamyl transferase genes and other low copy repeats in human chromosome 22q...
  4. ...of this chromosome will soon emerge, the number of characterized duplications on 22q is likely to increase significantly. The link between the presence of low copy repeats and genetic disease seems well established. On chromosome 22, a majority of dispersed, low copy repeats were so far reported in 22q11 region...
  5. ...1549-5469 1088-9051 genome;7/9/942 Corrections for vol. 7, p. 522 Corrections for vol. 7, p. 522 Genome Research 7: 522–531 The Organization of the γ-Glutamyl Transferase Genes and Other Low Copy Repeats in Human Chromosome 22q11 John E. Collins, Andrew J. Mungall, Karen L. Badcock, Joanne M. Fay...
  6. ...of restriction-modification systems have been identified in FNV. ORFs for ethanolamine utilization, thermostable carboxypeptidase, γ glutamyl-transpeptidase, and deblocking aminopeptidases are absent from FNV. FNV, like FN, lacks the classical catalase-peroxidase system, but thioredoxin/glutaredoxin enzymes...
  7. ..., Dallas, Texas 75235 USA; 2Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, New York 14263 USA Abstract Recombination between chromosome-specific low-copy repeats (duplicons) is an underlying mechanism for several genetic disorders. Recently, a chromosome 15 duplicon...
  8. .....159 1OCC/ Bos taurus   era (RC0158) GTP-binding protein RPG-SYO-E 1017 10..144 1EGA/ Escherichia coli   gltX (RC0966) Glutamyl-tRNA synthetase RPGCSYOAE 1539 1006..1149 1GLN/ Thermus thermophilus   gmk (RC1194) Guanylate kinase RPGC-YO-E 687 19..126 1GKY/ Saccharomyces  cerevisiae   hemC (RC0706...
  9. ...RSs). All amino acids are represented among these aaRSs, except for glutamine and asparagine. The gatCAB operon for the glutamyl-tRNAGln amidotransferase found in the probably compensates for the lack of glutaminyl-tRNA synthetase (GlnRS) and asparaginyl-tRNA synthetase (AsnRS), as in Chlamydia trachomatis...
  10. ...of the IS elements are not randomly distributed over the chromosome (Fig. 1 ). Seven copies of IS1077 (and the associated IS904) occupy the region between 2150 and 840 kb, encompassing the replication origin, whereas 15 copies of IS983 occupy a different region, between 680 and 2270 kb. The two regions overlap...
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