Engel J, Prockop DJ (1991). "The zipper-like folding of collagen triple helices and the effects of mutations that disrupt the zipper". Annu. Rev. Biophys. Biophys. Chem. 20 (1): 137–152. doi:10.1146/annurev.bb.20.060191.001033. PMID1867713.
Leslie AG (1990). "Refined crystal structure of type III chloramphenicol acetyltransferase at 1.75 A resolution". J. Mol. Biol. 213 (1): 167–186. doi:10.1016/S0022-2836(05)80129-9. PMID2187098.
Engel J, Prockop DJ (1991). "The zipper-like folding of collagen triple helices and the effects of mutations that disrupt the zipper". Annu. Rev. Biophys. Biophys. Chem. 20 (1): 137–152. doi:10.1146/annurev.bb.20.060191.001033. PMID1867713.
Leslie AG (1990). "Refined crystal structure of type III chloramphenicol acetyltransferase at 1.75 A resolution". J. Mol. Biol. 213 (1): 167–186. doi:10.1016/S0022-2836(05)80129-9. PMID2187098.