USP18 Polyclonal antibody

USP18 Polyclonal Antibody for WB,ELISA

Host / Isotype

Rabbit / IgG







Cat no : 12153-1-AP


43 kDa ISG15 specific protease, hUBP43, ISG43, Ubl thiolesterase 18, UBP43, USP18

Tested Applications

Positive WB detected inMCF-7

Recommended dilution

Western Blot (WB)WB : 1:500-1:1000
It is recommended that this reagent should be titrated in each testing system to obtain optimal results.
Sample-dependent, Check data in validation data gallery.

Product Information

12153-1-AP targets USP18 in WB,ELISA applications and shows reactivity with human samples.

Tested Reactivity human
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen USP18 fusion protein Ag2785
Full Name ubiquitin specific peptidase 18
Calculated Molecular Weight 372 aa, 43 kDa
Observed Molecular Weight 43 kDa, 70 kDa
GenBank Accession NumberBC014896
Gene Symbol USP18
Gene ID (NCBI) 11274
Conjugate Unconjugated
Form Liquid
Purification MethodAntigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

USP18(UBP43) is a 43 kDa protein that is known as an ISG15-deconjugating enzyme and an inhibitor of type I IFN signaling independent of its enzyme activity. USP18 can efficiently cleave only ISG15 fusions including native ISG15 conjugates linked via isopeptide bonds. It can be detected two bands(apparent MW of 38 and 35 kDa), the faster migrating one results from proteolytic processing in human primary hepatocytes(PMID:21779393). Sometimes the 70 kDa band is showed on the SDS-PAGE that it is considered as the complex of ISG15 and USP18(PMID: 14673145).