this gene is at drosophila chromosome location 25c and was identified by the high homology of one part of it with the noncollagenous carboxyl terminus ( nc1 ) of vertebrate type iv basement membrane collagens ( 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 ) .
C0009333
type iv
C0004799
basement membrane