three recombinant plasmids containing type i collagen specific sequences were characterized : p alpha 1r1 is 1600 bp and spans approximately 500 amino acid residues within the triple helical region of alpha 1 ( i ) and p alpha 1r2 is 900 bp in size and covers the entire 3 ' noncoding and about half of the c-terminal propeptide region of alpha 1 ( i ) collagen mrna .
C0041455
type i
C0009325
collagen