About Products Protein Database Contact

sh3bp4-b

Gene
sh3bp4-b
Protein
SH3 domain-binding protein 4-B
Organism
Xenopus laevis
Length
957 amino acids
Function
Possible role in regulating endocytosis of the transferrin receptor at the plasma membrane. Alternatively, may function as a negative regulator of the amino acid-induced TOR signaling by inhibiting the formation of active Rag GTPase complexes. Preferentially binds inactive Rag GTPase complexes and prevents their interaction with the mTORC1 complex inhibiting its relocalization to lysosomes and its activation. Thereby, may indirectly regulate cell growth, proliferation and autophagy (By similarity).
Mass
106.447 kDa
Sequence
MAAQKIRSANTNGLPRCKSEGALIDFSGVPDPSLSEVKVLSPSSLRIDNPASLENVKEVVAIKDYCPNNFTTLKFSKGEHLYVLDASGGDWWYAHNTTEMGYIPSSYVQPLNYRDSCLSDSGMIDGLLESVDEGVKELDLLGDWTNSSNQDSVKKCHNNPFLRPSVSNPFLNGPLVPQTHTADTENSVDLLLFDPLAPSHAIASETSTDVLLDLLPNTSQNEVTVPVKRDNPFFRSKRSYSLSELSVLQAKSESPTTGSFFAGLKSPAPEQFQSREDFRTAWLNHRKLARSCHDLDLLGQNPGWGQTQPVETSIVCRLDSSGGAVQLPDTSISILVPEKHVASGETQQISLKALLDPPLELNNDKCTTVSPVLEIKLSNMDVQSPLTLEVRISVALGGNASALNMVGIKCLRSDAKEGPYNSVTQIYMYGDTVQVKLDNLEPVMYVVMVAQGQGIVSPSSVWEYINKKVTVGLYGPKHIHPSFKAVIVIFGHDCAPKSLLVNEVGQQANKSAPVTLQLWGKQQFVLPKPQDLQLCLFSNMTNYRVDAGDQGKMVRGFQLKLGKVSRLIFPITCQDSAQLSDFTLRVQVRDEAGGVLSQYCVQTPQPPPKTGSKSTGPRRFLKKKEVGKIVLSPLALTYKYPTFQDRPVTSLKYGKLIKTVVRQSKNPYLLEYKKGDVIGLLSEEKIRLKGQLWNKEWYIGYYQGKLGLVHAKNVLVVGKVKPSFFSGPELTTGLLLEQILRPCKFLTYIYASVRTLLMENIGSWRCFADALGYGNLPLSYFCRVELESETERVASVLEKLKEECNSEGKEKKSFQKELIMALLKIDCQGLVVRLIQDFVLLTTAVEVASRWRELAEKLARVSKQQMEGYEAPHRDRNGMLDSEAMWKPAYDFLLTWSAQIGESYRDVIQELHTGLDKMRSPITKRWKHLTGTLIFVNSLDILRAAAFSTQEPEDCII