ASRGL1
Function
Has both L-asparaginase and beta-aspartyl peptidase activity. May be involved in the production of L-aspartate, which can act as an excitatory neurotransmitter in some brain regions. Is highly active with L-Asp beta-methyl ester. Besides, has catalytic activity toward beta-aspartyl dipeptides and their methyl esters, including beta-L-Asp-L-Phe, beta-L-Asp-L-Phe methyl ester (aspartame), beta-L-Asp-L-Ala, beta-L-Asp-L-Leu and beta-L-Asp-L-Lys. Does not have aspartylglucosaminidase activity and is inactive toward GlcNAc-L-Asn. Likewise, has no activity toward glutamine.
Post-translational modifications
Cleaved into an alpha and beta chain by autocatalysis; this activates the enzyme. The N-terminal residue of the beta subunit is responsible for the nucleophile hydrolase activity.
Sequence Similarities
Belongs to the Ntn-hydrolase family.
Tissue Specificity
Expressed in brain, kidney, testis and tissues of the gastrointestinal tract. Present in sperm (at protein level). Over-expressed in uterine, mammary, prostatic and ovarian carcinoma.
Cellular localization
- Cytoplasm
- Midpiece of sperm tail.
Alternative names
ALP, CRASH, ASRGL1, Isoaspartyl peptidase/L-asparaginase, Asparaginase-like protein 1, Beta-aspartyl-peptidase, Isoaspartyl dipeptidase, L-asparagine amidohydrolase