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Chain

Last modified May 9, 2016

This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.

The processing events that may contribute to the formation of a mature chain are described in the ‘Initiator methionine’, ‘Propeptide’, ‘Signal’ and ‘Transit peptide’ subsections.

The ‘description’ field of the ‘chain’ corresponds to the recommended name listed in the ‘Protein names’ subsection.
Example: Q6UB98

When several chains are produced from the same precursor, each chain is described in this subsection and is also listed in the ‘Names and taxonomy’ section, ‘Protein name’ subsection, as “Cleaved into the following x chains:”, where ‘x’ represents the number of chains described in the ‘PTM / Processing’ section. In both sections, the chains are listed in their order of appearance in the sequence, i.e. from the N- to the C-terminus.
Example: P07683, ‘PTM / Processing’ and P07683, ‘Names and taxonomy’

Each chain has a stable identifier.

See also: