| Comment |
For an interchain disulfide bond, the location descriptor in the feature location element is the residue number of the cysteine linked to the other protein. For an intrachain cross-link, the location descriptors in the feature location element are the residue numbers of the linked cysteines in conjunction with the 'join' location operator, e.g. 'join(42,50)'. For interchain disukfide bonds, the NOTE qualifier indicates the nature of the cross-link, by identifying the other protein, for example, 'Interchain (between A and B chains)' |