Protein-transport-associated molecules

Abstract

The invention provides human protein transport molecules (PTAM) and polynucleotides which identify and encode PTAM. The Invention also provides expression vectors, host cells, antibodies, agonists, and antagonists. The invention also provides methods for diagnosing, treating, or preventing disorders associated with expression of PTAM.

1 . A substantially purified polypeptide comprising an amino acid sequence selected from the group consisting of SEQ ID NO:1, SEQ ID NO:2, SEQ ID NO:7, and SEQ ID NO:8, and fragments thereof.  
     
     
         2 . A substantially purified variant having at least 90% amino acid identity to the amino acid sequence of  claim 1 .  
     
     
         3 . An isolated and purified polynucleotide encoding the polypeptide of  claim 1 .  
     
     
         4 . An isolated and purified polynucleotide variant having at least 90% polynucleotide sequence identity to the polynucleotide of  claim 3 .  
     
     
         5 . An isolated and purified polynucleotide which hybridizes under stringent conditions to the polynucleotide of  claim 3 .  
     
     
         6 . An isolated and purified polynucleotide having a sequence which is complementary to the polynucleotide of  claim 3 .  
     
     
         7 . A method for detecting a polynucleotide, the method comprising the steps of: 
 (a) hybridizing the polynucleotide of  claim 6  to at least one nucleic acid in a sample, thereby forming a hybridization complex; and    (b) detecting the hybridization complex, wherein the presence of the hybridization complex correlates with the presence of the polynucleotide in the sample.    
     
     
         8 . The method of  claim 7  further comprising amplifying the polynucleotide prior to hybridization.  
     
     
         9 . An isolated and purified polynucleotide comprising a polynucleotide sequence selected from the group consisting of SEQ ID NO:10, SEQ ID NO: 15 and SEQ ID NO: 16, and fragments thereof.  
     
     
         10 . An isolated and purified polynucleotide variant having at least 90% polynucleotide sequence identity to the polynucleotide of  claim 9 .  
     
     
         11 . An isolated and purified polynucleotide having a sequence which is complementary to the polynucleotide of  claim 9 .  
     
     
         12 . An expression vector comprising at least a fragment of the polynucleotide of  claim 3 .  
     
     
         13 . A host cell comprising the expression vector of  claim 12 .  
     
     
         14 . A method for producing a polypeptide, the method comprising the steps of: 
 a) culturing the host cell of  claim 13  under conditions suitable for the expression of the polypeptide; and    b) recovering the polypeptide from the host cell culture.    
     
     
         15 . A pharmaceutical composition comprising the polypeptide of  claim 1  in conjunction with a suitable pharmaceutical carrier.  
     
     
         16 . A purified antibody which specifically binds to the polypeptide of  claim 1 .  
     
     
         17 . A purified agonist of the polypeptide of  claim 1 .  
     
     
         18 . A purified antagonist of the polypeptide of  claim 1 .  
     
     
         19 . A method for treating or preventing a disorder associated with decreased expression or activity of PTAM, the method comprising administering to a subject in need of such treatment an effective amount of the pharmaceutical composition of  claim 15 .  
     
     
         20 . A method for treating or preventing a disorder associated with increased expression or activity of PTAM, the method comprising administering to a subject in need of such treatment an effective amount of the antagonist of  claim 18.