Protein
ATP-binding cassette sub-family B member 9
Organism
Rattus norvegicus
Function
ATP-dependent low-affinity peptide transporter which translocates a broad spectrum of peptides from the cytosol to the lysosomal lumen. Displays a broad peptide length specificity from 6-mer up to at least 59-mer peptides with an optimum of 23-mers. Favors positively charged, aromatic or hydrophobic residues in the N- and C-terminal positions whereas negatively charged residues as well as asparagine and methionine are not favored (By similarity).
Similarity
Belongs to the ABC transporter superfamily. ABCB family. MHC peptide exporter (TC 3.A.1.209) subfamily.
Sequence
MRLWKAVVVTLAFVSMDVGVTTAIYAFSHLDRSLLEDIRHFNIFDSVLDLWAACLYRSCLLLGATIGVAKNSALGPRRLRASWLVITLVCLFVGIYAMAKLLLFSEVRRPIRDPWFWALFVWTYISLAASFLLWGLLATVRPDAEALEPGNEGFHGEGGAPAEQASGATLQKLLSYTKPDVAFLVAASFFLIVAALGETFLPYYTGRAIDSIVIQKSMDQFTTAVVVVCLLAIGSSLAAGIRGGIFTLVFARLNIRLRNCLFRSLVSQETSFFDENRTGDLISRLTSDTTMVSDLVSQNINIFLRNTVKVTGVVVFMFSLSWQLSLVTFMGFPIIMMVSNIYGKYYKRLSKEVQSALARASTTAEETISAMKTVRSFANEEEEAEVFLRKLQQVYKLNRKEAAAYMSYVWGSGLTLLVVQVSILYYGGHLVISGQMSSGNLIAFIIYEFVLGDCMESVGSVYSGLMQGVGAAEKVFEFIDRQPTMVHDGRLAPDHLEGRVDFENVTFTYRTRPHTQVLQNVSFSLSPGKVTALVGPSGSGKSSCVNILENFYPLQGGRVLLDGEPIGAYDHKYLHRVISLVSQEPVLFARSITDNISYGLPTVPFEMVVEAAQKANAHGFIMELQDGYSTETGEKGAQLSGGQKQRVAMARALVRNPPVLILDEATSALDAESEYLIQQAIHGNLQRHTVLIIAHRLSTVERAHLIVVLDKGRVVQQGTHQQLLAQGGLYAKLVQRQMLGLEHPLDYTAGHKEPPSNTEHKA