Argininosuccinate synthetase 1

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Argininosuccinate synthase 1
Protein ASS1 PDB 2nz2.png
PDB rendering based on 2nz2.
Available structures
PDB Ortholog search: PDBe, RCSB
Symbols ASS1 ; ASS; CTLN1
External IDs OMIM603470 MGI88090 HomoloGene6899 GeneCards: ASS1 Gene
EC number
RNA expression pattern
PBB GE ASS1 207076 s at tn.png
More reference expression data
Species Human Mouse
Entrez 445 11898
Ensembl ENSG00000130707 ENSMUSG00000076441
UniProt P00966 P16460
RefSeq (mRNA) NM_000050 NM_007494
RefSeq (protein) NP_000041 NP_031520
Location (UCSC) Chr 9:
133.32 – 133.38 Mb
Chr 2:
31.47 – 31.52 Mb
PubMed search [1] [2]

Argininosuccinate synthetase is an enzyme that in humans is encoded by the ASS1 gene.[1][2][3]

The protein encoded by this gene catalyzes the penultimate step of the arginine biosynthetic pathway. There are approximately 10 to 14 copies of this gene including the pseudogenes scattered across the human genome, among which the one located on chromosome 9 appears to be the only functional gene for argininosuccinate synthetase. Mutations in the chromosome 9 copy of ASS cause citrullinemia. Two transcript variants encoding the same protein have been found for this gene.[3]


  1. ^ Beaudet AL, O'Brien WE, Bock HG, Freytag SO, Su TS (Mar 1986). "The human argininosuccinate synthetase locus and citrullinemia". Adv Hum Genet 15: 161–96, 291–2. PMID 3513483. 
  2. ^ Carritt B, Goldfarb PS, Hooper ML, Slack C (Jun 1977). "Chromosome assignment of a human gene for argininosuccinate synthetase expression in Chinese hamsterxhuman somatic cell hybrids". Exp Cell Res 106 (1): 71–8. doi:10.1016/0014-4827(77)90242-7. PMID 852520. 
  3. ^ a b "Entrez Gene: ASS1 argininosuccinate synthetase 1". 

Further reading[edit]

  • Ikeda S (2001). "[Recent advances of the treatment in metabolic disorders]". Rinsho Shinkeigaku 40 (12): 1264–6. PMID 11464474. 
  • Carritt B (1977). "Somatic cell genetic evidence for the presence of a gene for citrullinemia on human chromosome 9". Cytogenet. Cell Genet. 19 (1): 44–8. doi:10.1159/000130793. PMID 891260. 
  • Dhanakoti SN, Brosnan ME, Herzberg GR, Brosnan JT (1992). "Cellular and subcellular localization of enzymes of arginine metabolism in rat kidney". Biochem. J. 282 (Pt 2): 369–75. PMC 1130788. PMID 1312326. 
  • Wakui H; Komatsuda A; Itoh H et al. (1992). "Renal argininosuccinate synthetase: purification, immunohistochemical localization, and elastin-binding property". Ren. Physiol. Biochem. 15 (1): 1–9. doi:10.1159/000173435. PMID 1372742. 
  • Kobayashi K, Rosenbloom C, Beaudet AL, O'Brien WE (1991). "Additional mutations in argininosuccinate synthetase causing citrullinemia". Mol. Biol. Med. 8 (1): 95–100. PMID 1943692. 
  • Kobayashi K; Jackson MJ; Tick DB et al. (1990). "Heterogeneity of mutations in argininosuccinate synthetase causing human citrullinemia". J. Biol. Chem. 265 (19): 11361–7. PMID 2358466. 
  • Isashiki Y; Noda T; Kobayashi K et al. (1989). "Identification of essential arginine residue(s) for Mg-ATP binding of human argininosuccinate synthetase". Protein Seq. Data Anal. 2 (4): 283–7. PMID 2788888. 
  • Jinno Y; Nomiyama H; Matuo S et al. (1987). "Structure of the 5' end region of the human argininosuccinate synthetase gene". J. Inherit. Metab. Dis. 8 (3): 157–9. doi:10.1007/BF01819307. PMID 3027451. 
  • Freytag SO, Beaudet AL, Bock HG, O'Brien WE (1985). "Molecular structure of the human argininosuccinate synthetase gene: occurrence of alternative mRNA splicing". Mol. Cell. Biol. 4 (10): 1978–84. PMC 369014. PMID 6095035. 
  • Bock HG, Su TS, O'Brien WE, Beaud et al. (1983). "Sequence for human argininosuccinate synthetase cDNA". Nucleic Acids Res. 11 (18): 6505–12. doi:10.1093/nar/11.18.6505. PMC 326390. PMID 6194510. 
  • Freytag SO, Bock HG, Beaudet AL, O'Brien WE (1984). "Molecular structures of human argininosuccinate synthetase pseudogenes. Evolutionary and mechanistic implications". J. Biol. Chem. 259 (5): 3160–6. PMID 6321498. 
  • Kobayashi K; Kakinoki H; Fukushige T et al. (1995). "Nature and frequency of mutations in the argininosuccinate synthetase gene that cause classical citrullinemia". Hum. Genet. 96 (4): 454–63. doi:10.1007/BF00191806. PMID 7557970. 
  • Kobayashi K, Shaheen N, Terazono H, Saheki T (1994). "Mutations in argininosuccinate synthetase mRNA of Japanese patients, causing classical citrullinemia". Am. J. Hum. Genet. 55 (6): 1103–12. PMC 1918437. PMID 7977368. 
  • Shaheen N; Kobayashi K; Terazono H et al. (1996). "Characterization of human wild-type and mutant argininosuccinate synthetase proteins expressed in bacterial cells". Enzyme Protein 48 (5–6): 251–64. PMID 8792870. 
  • Gress TM; Müller-Pillasch F; Geng M et al. (1996). "A pancreatic cancer-specific expression profile". Oncogene 13 (8): 1819–30. PMID 8895530. 
  • Ji H; Reid GE; Moritz RL et al. (1997). "A two-dimensional gel database of human colon carcinoma proteins". Electrophoresis 18 (3–4): 605–13. doi:10.1002/elps.1150180344. PMID 9150948. 

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