a drosophila melanogaster gene for a basement membrane procollagen chain was recently identified from the sequence homology of the carboxyl ( nc1 ) end of the polypeptide that it encodes with the corresponding domain of human and murine collagens iv ( blumberg , b. , mackrell , a. j. , olson , p. f. , kurkinen , m. , monson , j. m. , natzle , j. e. , and fessler , j. h. ( 1987 ) j. biol . chem . 262 , 5947-5950 ) .
C0004799
basement membrane
C0009333
collagens iv