I am currently facing two transformational issues. Suppose I am given a protein's residue sequence and calpha distance matrix; is there a way to generate the 3d coordinates of the protein's residues from this information(I think there theoretically should be since it is a bijection up to rotation/translation). The second issue I am faced with is generating pdb files. How does one make a pdb file given the coordinates of the protein's residues along with the sequence? Is this enough information?