Stimulation of system y(+)-like amino acid transport by the heavy chain of human 4F2 surface antigen in Xenopus laevis oocytes.
نویسندگان
چکیده
منابع مشابه
Amino-acid-dependent modulation of amino acid transport in Xenopus laevis oocytes.
We have measured rates of uptake of arginine, glutamine, glutamate, serine, phenylalanine and glycine in Xenopus laevis oocytes cultured for periods of up to 24h in saline in the presence or absence of a mixture of 20 amino acids at concentrations approximating those in Xenopus plasma. Amino acid supplementation increased the total intracellular amino acid concentration from 8.2 to 18.4 nmol pe...
متن کاملPoly(A)+ RNA from rabbit intestinal mucosa induces b0,+ and y+ amino acid transport activities in Xenopus laevis oocytes.
Injection of poly(A)+ RNA (mRNA) isolated from rabbit intestinal mucosa into Xenopus laevis oocytes results in an increase in sodium-independent uptake of L-[3H]leucine, L-[35S]cystine, and L-[3H]arginine. This uptake activity is related to an mRNA species corresponding to the recently isolated rabbit kidney cortex cDNA clone rBAT (related to b0,+ amino acid transporter; Bertran, J., Werner, A....
متن کاملBeta 2-microglobulin induces intracellular transport of human class I transplantation antigen heavy chains in Xenopus laevis oocytes
Human class I transplantation antigens are cell-surface-expressed molecules composed of one glycosylated, membrane-integrated heavy chain and one nonglycosylated, water-soluble subunit, beta 2-microglobulin (beta 2m). We have examined the intracellular transport of the two subunits by microinjecting mRNA into Xenopus laevis oocytes. Beta 2m, translated in oocytes, was transported and secreted i...
متن کاملActivation of cyclosporin A transport by a novel lambda light chain of human Ig surface antigen-related gene in Xenopus laevis oocytes.
In the present study, we isolated and determined the pharmacological characteristics of a novel gene encoding the lambda light chain of human Ig surface antigen-related gene (IgLC-rG). The isolated cDNA consisted of 693 base pairs that encoded a 232-amino acid protein. Northern blot analysis revealed that the IgLC-rG mRNA is expressed in the adult spleen and small intestine but not in fetal tis...
متن کاملSignificance of System L Amino Acid Transporter 1 (LAT-1) and 4F2 Heavy Chain (4F2hc) Expression in Human Developing Intestines
To clarify the significance of expression of system L amino acid transporter 1 (LAT1) and 4F2 heavy chain (4F2hc) in the developing intestine, immunohistochemical investigation and molecular analysis were performed in the human embryonic and/or fetal intestines, ranging from 28-30 days to 34-35 weeks gestation. The molecular analysis for the expression of LAT1 and 4F2hc mRNAs was done in the pu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1992
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.89.12.5606