a comparison of the nucleotide sequence of these clones with the sequence of the 5 ' end of the pro alpha 2 ( i ) collagen mrna confirms that there is 84 % homology in a 49-bp region surrounding the translation start point , and shows that there is 70 % homology in the nucleotide sequences encoding the n-propeptide triple helical region of the two type-i collagen chains .
C0009325
collagen
C0041455
type-i collagen