New answers tagged pdb
PDB residues are described by the residue number and an insertion code. Residue numbers can be any number, including negative values. In 3CKR the first residue has nr. -6, followed by -5, etc. This might indicate that there are additional residues at the beginning of the sequence, relative to other PDB entries. In 2P83, the first residue has the number 61P. ...
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