101
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Fraser NJ, Boyd Y, Craig I. Isolation and characterization of a human variable copy number tandem repeat at Xcen-p11.22. Genomics 1989; 5:144-8. [PMID: 2570025 DOI: 10.1016/0888-7543(89)90099-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A subclone (M27B) has been isolated from a cosmid randomly selected from a library enriched for human X-chromosomal material. The subclone is extensively single-copy sequence, but also contains three complete copies and one partial copy of a 26-bp repeat, within which exists an inverted repeat having the potential to form a cruciform loop structure. Genomic sequences in this repeat region are apparently refractory to cloning, and rearrangements occurring during this process result in deletions. M27B detects multiple X-linked restriction fragments for a wide range of enzymes including MspI and HpaII. We have assigned the locus recognized by the probe (DXS255) to Xcen-Xp11.4 by mapping with a somatic cell hybrid panel and further refined its localization to Xp11.22 by in situ hybridization. The repeat sequence that is presumed to be responsible for the hypervariability observed does not show close similarity to other variable copy number tandem repeats described.
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102
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103
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Ballabio A, Carrozzo R, Gil A, Gillard B, Affara N, Ferguson-Smith MA, Fraser N, Craig I, Rocchi M, Romeo G. Molecular characterization of human X/Y translocations suggests their aetiology through aberrant exchange between homologous sequences on Xp and Yq. Ann Hum Genet 1989; 53:9-14. [PMID: 2729897 DOI: 10.1111/j.1469-1809.1989.tb01117.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Several DNA sequences from two homologous regions, localized on the distal part of the human X chromosome short arm and on the long arm of the Y chromosome, have been hybridized to DNAs from seven human-rodent hybrids containing human X; Y translocation chromosomes. Molecular characterization of the translocated chromosomes has revealed, in all but one case, transfer of the Y cluster of sequences and complete deletion of the corresponding X-chromosomal sequences. The possible role of X/Y homology in the aetiology of X; Y translocations is proposed.
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104
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Sefiani A, Sinnett D, Abel L, Szpiro-Tapia S, Heuertz S, Craig I, Fraser N, Kruse TA, Frydman M, Peter MO. Linkage studies do not confirm the cytogenetic location of incontinentia pigmenti on Xp11. Hum Genet 1988; 80:282-6. [PMID: 3192215 DOI: 10.1007/bf01790098] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Linkage studies have been performed in 5 incontinentia pigmenti (IP) families totaling 29 potentially informative meioses. Ten probes of the Xp arm were used, six of them were precisely localized on the X chromosome, using hamster X human somatic cell hybrids containing a broken X chromosome derived from an incontinentia pigmenti patient carrying an X;9 translocation [46,XX,t(X;9)(p11.21;q34)]. The following order for probes is proposed: pter - (DXS7, DXS146, DXS255) - IP1 - (DXS14, DXS90) - DXS106 - qter. The negative lod scores obtained exclude the possibility that in the families studied, the gene for IP is located in Xp11 or in the major part of the Xp arm.
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105
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Boyd Y, Cockburn D, Holt S, Munro E, Van Ommen GJ, Gillard B, Affara N, Ferguson-Smith M, Craig I. Mapping of 12 translocation breakpoints in the Xp21 region with respect to the locus for Duchenne muscular dystrophy. CYTOGENETICS AND CELL GENETICS 1988; 48:28-34. [PMID: 3180845 DOI: 10.1159/000132581] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Over 20 females have been reported to carry reciprocal X; autosome translocations with breakpoints in Xp21 and to suffer from Duchenne muscular dystrophy (DMD). We have positioned nine of these breakpoints with respect to the Duchenne gene by mapping probes from the DMD region against a panel of somatic cell hybrids, each containing one of the translocation chromosomes from a different female patient; further information has also been obtained by in situ hybridization, including the breakpoint location in a tenth DMD patient. We have also characterized two translocation breakpoints that lie in the same chromosomal region but which are not associated with the expression of DMD. All the DMD-associated translocation breakpoints examined lie at several sites within the DMD locus and between the two non-DMD breakpoints.
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106
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Ropers H, Craig I. Report of the committee on the genetic constitution of chromosomes 12 and 13. CYTOGENETICS AND CELL GENETICS 1988; 49:82-9. [PMID: 3203556 DOI: 10.1159/000132655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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107
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Craig I, Judges D, Gnidec A, Lefcoe M, Paterson N, Finley R, Sibbald W. Pulmonary permeability edema in a large animal model of nonpulmonary sepsis. A morphologic study. THE AMERICAN JOURNAL OF PATHOLOGY 1987; 128:241-51. [PMID: 3618726 PMCID: PMC1899632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Morphologic studies were undertaken in a sheep model of pulmonary permeability edema (PPE) induced by cecal ligation and perforation. Biopsies taken every 24 hours through 96 hours following induction of sepsis showed, at 24 hours, interstitial edema accompanied by widespread aggregation of polymorphonuclear leukocytes. This was confirmed by electron microscopy, which also demonstrated endothelial cell swelling, platelet aggregation, and fibrin deposition. By 48 hours, a "thromboangiitis" had developed that persisted through 96 hours. In vitro pulmonary angiograms done at 60 and 96 hours showed multiple filling defects; it was possible to demonstrate that these defects corresponded to the "thromboangiitis." These thrombotic lesions, which were not the result of embolization from indwelling lines, closely resembled vascular changes described in the adult respiratory distress syndrome. It is believed that this is the first time that such lesions have been described in a model of PPE resulting from nonpulmonary sepsis.
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108
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Ballabio A, Parenti G, Carrozzo R, Sebastio G, Andria G, Buckle V, Fraser N, Craig I, Rocchi M, Romeo G. Isolation and characterization of a steroid sulfatase cDNA clone: genomic deletions in patients with X-chromosome-linked ichthyosis. Proc Natl Acad Sci U S A 1987; 84:4519-23. [PMID: 3474618 PMCID: PMC305121 DOI: 10.1073/pnas.84.13.4519] [Citation(s) in RCA: 109] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
We have isolated several cDNA clones from a lambda gt11 expression library by screening with antibodies prepared against the microsomal enzyme steroid sulfatase, which is deficient in classical X-chromosome-linked ichthyosis patients. One of these clones (p422) has been assigned by mapping with a somatic cell hybrid panel and by in situ hybridization to Xp22.3. Clone p422 therefore has a coincident localization with the previously identified locus for steroid sulfatase expression in the region of the X chromosome escaping from inactivation. Twelve steroid sulfatase-deficient patients, including eight cases of classical ichthyosis, were found to be deleted for genomic sequences detected by the clone.
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109
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Boyd Y, Munro E, Ray P, Worton R, Monaco T, Kunkel L, Craig I. Molecular heterogeneity of translocations associated with muscular dystrophy. Clin Genet 1987; 31:265-72. [PMID: 3594934 DOI: 10.1111/j.1399-0004.1987.tb02805.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Individual translocation chromosomes from six girls suffering from Duchenne or Becker muscular dystrophy (DMD or BMD) have been isolated in human-mouse somatic cell hybrids. DNA prepared from these hybrids was probed with sequences physically close to the locus; these include a junction fragment from the site of the X:21 translocation (pXJ1) and subclones from the pERT 87 (DXS164) region which are absent in a minority of male DMD patients. Both sets of sequences mapped within the area defined by the translocation breakpoints, confirming their close proximity to the DMD and BMD loci. Furthermore, the X chromosome breakpoints of the translocations can be divided into three categories depending upon their position in relation to the sequences recognised by pXJ1 and pERT 87. The genomic target disrupted by the translocations examined here is a minimum of 176 kb.
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110
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Fraser N, Ballabio A, Zollo M, Persico G, Craig I. Identification of incomplete coding sequences for steroid sulphatase on the human Y chromosome: evidence for an ancestral pseudoautosomal gene? Development 1987; 101 Suppl:127-32. [PMID: 3503710 DOI: 10.1242/dev.101.supplement.127] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A cDNA clone (p422) containing about 200 bp of coding sequences for steroid sulphatase (STS) has been isolated from a λgt 11 expression library by antibody screening and has been assigned by mapping with a somatic cell hybrid panel and by in situ hybridization to Xp22.3; a localization coincident with the previously identified locus for STS expression. Although no significant hybridization of this clone to the Y chromosome was observed, p422 has been used to isolate a longer cDNA clone and genomic sequences which do recognize Y-specific restriction fragments. An abbreviated STS gene has been localized to Yq11.2. The coding sequences for the human enzyme shows little homology to sequences in mice.
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111
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Abstract
Other presentations to this symposium have indicated that the search at the molecular level for the pivotal regulatory, or structural, gene responsible for determining the development of the undifferentiated gonad has been joined in earnest. It is also clear that genes on the Y chromosome are involved in processes other than primary determination of the testis. In this summary, we will review briefly ‘the molecular search for the sex-determining gene’ and consider the approaches that are available and the achievements that have been made in the areas relevant to an understanding of the roles and significance of other Y-located genes. The availability of molecular and physical mapping data also allow an examination of the evolutionary relationship of the mammalian X and Y chromosomes and a consideration of the possible homologies between the human and mouse Y chromosomes.
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112
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Boyd Y, Buckle V, Holt S, Munro E, Hunter D, Craig I. Muscular dystrophy in girls with X;autosome translocations. J Med Genet 1986; 23:484-90. [PMID: 3806636 PMCID: PMC1049827 DOI: 10.1136/jmg.23.6.484] [Citation(s) in RCA: 102] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Twenty known cases of X;autosome translocations with breakpoints at Xp21 associated with Duchenne or Becker muscular dystrophy in girls are reviewed. The variable severity described for different persons may reflect differences in X inactivation or in the nature of the genomic target disrupted. High resolution cytogenetic studies on 12 cases indicate breakpoints on the X chromosome at Xp21.1 or Xp21.2. Translocation chromosomes from several of these cases have been isolated in human/mouse somatic cell hybrids. Molecular heterogeneity in the breakpoint positions has been established by probing DNA from these hybrids with a range of cloned sequences known to be located within, or closely linked to, the Duchenne region. The minimum separation between the most distal and the most proximal breakpoints is 176 kb suggesting that, if a single gene is involved, it must be large. Alternatively, the translocations may affect different genes, or confer alterations to regulatory sequences which operate at a distance.
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113
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Judges D, Sharkey P, Cheung H, Craig I, Driedger AA, Sibbald WJ, Finley R. Pulmonary microvascular fluid flux in a large animal model of sepsis: evidence for increased pulmonary endothelial permeability accompanying surgically induced peritonitis in sheep. Surgery 1986; 99:222-34. [PMID: 3945925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
To characterize some of the remote effects of systemic sepsis on the lung, we evaluated changes in pulmonary microvascular fluid flux before and during sepsis secondary to a peritoneal focus of inflammation in sheep. We induced peritonitis by cecal ligation, perforation, and devascularization. During a subsequent 72-hour study period, both the mean blood pressure and the pulmonary capillary wedge pressure were unchanged, while the cardiac index increased slightly. The PaO2 fell by 48 hours (98 +/- 8 to 84 +/- 10 mm Hg; p less than 0.05) (mean +/- SD) and subsequently remained low throughout the experiment. Simultaneously, pulmonary lymph flow increased by 24 hours (11.5 +/- 4.9 to 26.7 +/- 13 ml/hr; p less than 0.05) and remained elevated throughout the experiment while [L/P] total protein ratios remained unchanged at 24 hours (baseline: 0.59 +/- 0.15 at 24 hours: 0.65 +/- 0.16). Morphologic examination of the lung showed that this model of peritonitis was characterized by neutrophil emigration into the pulmonary interstitium by 24 hours and interstitial edema by 48 hours. Therefore this model of bacterial peritonitis in sheep demonstrates that one of the remote effects of surgically induced systemic sepsis is an increase in permeability of the pulmonary microvascular membrane.
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114
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Craig SP, Buckle VJ, Lamouroux A, Mallet J, Craig I. Localization of the human tyrosine hydroxylase gene to 11p15: gene duplication and evolution of metabolic pathways. CYTOGENETICS AND CELL GENETICS 1986; 42:29-32. [PMID: 2872999 DOI: 10.1159/000132246] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Phenylalanine hydroxylase (PAH) and tyrosine hydroxylase (TH) are consecutive enzymes in the metabolic pathway leading to the production of catecholamine neurotransmitters. A comparison of recently available sequence data of these enzymes in the rat indicates about 70% homology in the 3' coding regions. We have localized TH by in situ hybridization to human chromosome region 11p15. Consideration of this assignment and that of PAH to chromosome 12, together with the known distribution of other pairs of related genes on these two chromosomes, provides convincing evidence of their ancestral relationship and suggests a role for gene duplication in the diversification of metabolic pathways in the vertebrate ancestors of mammals.
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115
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Moloo Z, Finley R, Lefcoe M, Turner-Smith L, Craig I. Possible spread of bronchogenic carcinoma to the chest wall following a transthoracic fine needle aspiration biopsy. Clin Biochem 1984. [DOI: 10.1016/s0009-9120(84)80252-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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116
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Abstract
Inactivation (lyonization) of one of the two copies of X-linked genes occurs in female mammals, thereby reducing the number of active copies to that of the male. It has been suggested that genes subject to lyonization would be expected to be preserved as a linkage group during mammalian evolution. A short region of the human X chromosome containing several genes, including that necessary for the expression of steroid sulphatase (STS), is exceptional in that it apparently escapes X-inactivation. As it is not apparent why the linkage of genes not subject to X-inactivation should be conserved, we have examined the expression of the STS gene in mice (it has been shown recently that this gene is X-linked). Enzyme levels were determined in normal males and females and in the progeny of crosses in which the sex reversing factor, Sxr, was segregating to produce XX males. We report here that in contrast to the situation in humans, the STS gene in mice is subject to the normal pattern of X-inactivation.
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117
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Bryden AS, Thouless ME, Hall CJ, Flewett TH, Wharton BA, Mathew PM, Craig I. Rotavirus infections in a special-care baby unit. J Infect 1982; 4:43-8. [PMID: 6764499 DOI: 10.1016/s0163-4453(82)90988-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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118
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Nyack B, Craig I, Padmore CL, Bernard N. Necrotic laryngitis in a calf. MODERN VETERINARY PRACTICE 1981; 62:937-8. [PMID: 7329388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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119
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Nyack B, Padmore CL, Craig I. A suspected case of phlegmonous stomatitis caused by Staphylococcus spp in a Hereford bull. VETERINARY MEDICINE, SMALL ANIMAL CLINICIAN : VM, SAC 1981; 76:1467-70. [PMID: 6916528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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120
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121
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Abstract
The authors have encountered a recent case of verrucous carcinoma of the urinary bladder in a seventy-three-year-old man. The difference in its clinical presentation and pathologic growth pattern from the usual squamous cell carcinoma is striking. The case report, a detailed pathologic description of the lesion, and review of the scanty literature are presented.
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122
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Craig I, Tolley E, Bobrow M. A preliminary analysis of the segregation of human hydroxyacyl coenzyme A dehydrogenase in human-mouse somatic cell hybrids. CYTOGENETICS AND CELL GENETICS 1976; 16:114-7. [PMID: 975867 DOI: 10.1159/000130568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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123
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Craig I, Tolley E, Bobrow M. Mitochondrial and cytoplasmic forms of fumarate hydratase assigned to chromosome 1. CYTOGENETICS AND CELL GENETICS 1976; 16:118-21. [PMID: 975868 DOI: 10.1159/000130569] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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124
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Tolley E, Craig I. Presence of two forms of fumarase (fumarate hydratase E.C. 4.2.1.2) in mammalian cells: immunological characterization and genetic analysis in somatic cell hybrids. Confirmation of the assignment of a gene necessary for the enzyme expression to human chromosome 1. Biochem Genet 1975; 13:867-83. [PMID: 812482 DOI: 10.1007/bf00484417] [Citation(s) in RCA: 43] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Two major forms of fumarate hydratase have been resolved in extracts prepared from a wide variety of mammalian cells by electrophoresis. Fractionation experiments with human and mouse cells suggest that one form (the slower migrating) is localized in the mitochondria, whereas the other form is predominant in the cytoplasm. Analysis of the segregation of the enzyme forms in human-mouse somatic cell hybrids indicates that a gene(s) necessary for the expression of both forms can be assigned to human chromosome 1(confirmation of a previous assignment by van Someren et al., 1974). Electrophoretic analysis suggests that the two forms may be interrelated. Furthermore, they both exhibit identical reactivity toward anti-fumarate hydratase antiserum. It is suggested that a modification of one form may occur in vivo and that the modification may be important in determining the intracellular localization of the enzyme.
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125
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126
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127
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Jeffreys A, Craig I. Differences in the products of mitochondrial protein synthesis in vivo in Human and mouse cells and their potential use as markers for the mitochondrial genome in human--mouse somatic cell hybrids. Biochem J 1974; 144:161-4. [PMID: 4462569 PMCID: PMC1168476 DOI: 10.1042/bj1440161] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The proteins synthesized in the mitochondria of mouse and human cells grown in tissue culture were examined by electrophoresis in polyacrylamide gels. The proteins were labelled by incubating the cells in the presence of [(35)S]methionine and an inhibitor of cytoplasmic protein synthesis (emetine or cycloheximide). A detailed comparison between the labelled products of mouse and human mitochondrial protein synthesis was made possible by developing radioautograms after exposure to slab-electrophoresis gels. Patterns obtained for different cell types of the same species were extremely similar, whereas reproducible differences were observed on comparison of the profiles obtained for mouse and human cells. Four human-mouse somatic cell hybrids were examined, and in each one only components corresponding to mouse mitochondrially synthesized proteins were detected.
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128
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Povey S, Swallow DM, Bobrow M, Craig I, van Heyningen V. Probable assignment of the locus determining human red cell acid phosphatase ACP1 to chromosome 2 using somatic cell hybrids. Ann Hum Genet 1974; 38:1-5. [PMID: 4477697 DOI: 10.1111/j.1469-1809.1974.tb01987.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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129
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Craig I. A procedure for the analysis of citrate synthase (E.C. 4.1.3.7) in somatic cell hybrids. Biochem Genet 1973; 9:351-8. [PMID: 4795824 DOI: 10.1007/bf00486070] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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130
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Van Heyningen V, Craig I, Bodmer W. Genetic control of mitochondrial enzymes in human-mouse somatic cell hybrids. Nature 1973; 242:509-12. [PMID: 4633729 DOI: 10.1038/242509a0] [Citation(s) in RCA: 45] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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131
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Abstract
Three cases of plasmacytoma of the thyroid are described and their clinical and histological features recorded. Two were considered to be true extramedullary plasmacytomas, the third the initial manifestation of a disseminated myelomatous process. Plasmacytomas of the thyroid are shown to have many features in common with malignant lymphomas in this site, including an association with Hashimoto thyroiditis in more than half the reported cases. No certain method of assessing the prognosis in any individual case has yet been described.
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132
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Craig I. Collecting specimens of urine. The nurse holds the key to diagnosis of infections. NURSING TIMES 1966; 62:531-2. [PMID: 5910307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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133
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Craig I. The collection of urine for bacteriological investigation. THE BRITISH JOURNAL OF CLINICAL PRACTICE 1965; 19:557-63. [PMID: 5830344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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