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Identification
HMDB Protein ID HMDBP08843
Secondary Accession Numbers
  • 14570
Name Interferon-stimulated gene 20 kDa protein
Synonyms
  1. Estrogen-regulated transcript 45 protein
  2. Promyelocytic leukemia nuclear body-associated protein ISG20
Gene Name ISG20
Protein Type Unknown
Biological Properties
General Function Involved in exonuclease activity
Specific Function Exonuclease with specificity for single-stranded RNA and, to a lesser extent for DNA. Degrades RNA at a rate that is approximately 35-fold higher than its rate for single-stranded DNA. Involved in the antiviral function of IFN against RNA viruses
Pathways Not Available
Reactions Not Available
GO Classification
Component
cell part
intracellular
Function
hydrolase activity, acting on ester bonds
binding
catalytic activity
hydrolase activity
exonuclease activity
nucleic acid binding
nuclease activity
Cellular Location
  1. Nucleus
Gene Properties
Chromosome Location Chromosome:1
Locus 15q26
SNPs ISG20
Gene Sequence
>546 bp
ATGGCTGGGAGCCGTGAGGTGGTGGCCATGGACTGCGAGATGGTGGGGCTGGGGCCCCAC
CGGGAGAGTGGCCTGGCTCGTTGCAGCCTCGTGAACGTCCACGGTGCTGTGCTGTACGAC
AAGTTCATCCGGCCTGAGGGAGAGATCACCGATTACAGAACCCGGGTCAGCGGGGTCACC
CCTCAGCACATGGTGGGGGCCACACCATTTGCCGTGGCCAGGCTAGAGATCCTGCAGCTC
CTGAAAGGCAAGCTGGTGGTGGGTCATGACCTGAAGCACGACTTCCAGGCACTGAAAGAG
GACATGAGCGGCTACACAATCTACGACACGTCCACTGACAGGCTGTTGTGGCGTGAGGCC
AAGCTGGACCACTGCAGGCGTGTCTCCCTGCGGGTGCTGAGTGAGCGCCTCCTGCACAAG
AGCATCCAGAACAGCCTGCTTGGACACAGCTCGGTGGAAGATGCGAGGGCAACGATGGAG
CTCTATCAAATCTCCCAGAGAATCCGAGCCCGCCGAGGGCTGCCCCGCCTGGCTGTGTCA
GACTGA
Protein Properties
Number of Residues 181
Molecular Weight 20363.3
Theoretical pI 9.19
Pfam Domain Function
Signals
  • None
Transmembrane Regions
  • None
Protein Sequence
>Interferon-stimulated gene 20 kDa protein
MAGSREVVAMDCEMVGLGPHRESGLARCSLVNVHGAVLYDKFIRPEGEITDYRTRVSGVT
PQHMVGATPFAVARLEILQLLKGKLVVGHDLKHDFQALKEDMSGYTIYDTSTDRLLWREA
KLDHCRRVSLRVLSERLLHKSIQNSLLGHSSVEDARATMELYQISQRIRARRGLPRLAVS
D
GenBank ID Protein 6759541
UniProtKB/Swiss-Prot ID Q96AZ6
UniProtKB/Swiss-Prot Entry Name ISG20_HUMAN
PDB IDs
GenBank Gene ID X89773
GeneCard ID ISG20
GenAtlas ID ISG20
HGNC ID HGNC:6130
References
General References
  1. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [PubMed:15489334 ]
  2. Gongora C, David G, Pintard L, Tissot C, Hua TD, Dejean A, Mechti N: Molecular cloning of a new interferon-induced PML nuclear body-associated protein. J Biol Chem. 1997 Aug 1;272(31):19457-63. [PubMed:9235947 ]
  3. Pentecost BT: Expression and estrogen regulation of the HEM45 MRNA in human tumor lines and in the rat uterus. J Steroid Biochem Mol Biol. 1998 Jan;64(1-2):25-33. [PubMed:9569007 ]
  4. Nguyen LH, Espert L, Mechti N, Wilson DM 3rd: The human interferon- and estrogen-regulated ISG20/HEM45 gene product degrades single-stranded RNA and DNA in vitro. Biochemistry. 2001 Jun 19;40(24):7174-9. [PubMed:11401564 ]
  5. Espert L, Degols G, Gongora C, Blondel D, Williams BR, Silverman RH, Mechti N: ISG20, a new interferon-induced RNase specific for single-stranded RNA, defines an alternative antiviral pathway against RNA genomic viruses. J Biol Chem. 2003 May 2;278(18):16151-8. Epub 2003 Feb 19. [PubMed:12594219 ]