Citrullinemia is an autosomal recessive disease caused by deficiency of argininosuccinate synthetase. In order to characterize mutations, RNA was isolated from cultured fibroblasts from 13 unrelated patients with neonatal citrullinemia. Ten mutations were identified by sequencing of amplified cDNA. Seven single base missense mutations were identified: Gly14----Ser, Ser180----Asn, Arg157----His, Arg304----Trp, Gly324----Ser, Arg363----Trp, and Gly390----Arg. Six of these missense mutations involved conversion of a CpG dinucleotide in the sense strand to TpG or CpA, and six of the seven mutations alter a restriction enzyme site in the cDNA. Two mutations were observed in which the sequences encoded by a single exon (exon 7 or 13) were absent from the cDNA. One mutation is a G----C substitution in the last position of intron 15 resulting in splicing to a cryptic splice site within exon 16. There is extreme heterogeneity of mutations causing citrulinemia. This heterogeneity may prove typical for less common autosomal recessive human genetic diseases.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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