The collection is also part of NCBI’sNCBI's [[Entrez]] query and retrieval system, crosslinked to numerous other resources. CDD provides annotation of ___domain footprints and conserved functional sites on protein sequences. Precalculated ___domain annotation can be retrieved for protein sequences tracked in NCBI’sNCBI's Entrez system, and CDD’sCDD's collection of models can be queried with novel protein sequences via * {{cite web | url = https://www.ncbi.nlm.nih.gov/Structure/cdd/wrpsb.cgi| title = the CD-Search service | author = | authorlink = | coauthors = | date = | format = | work = | publisher = United States National Center for Biotechnology Information | pages = | language = | archiveurl = | archivedate = | quote = | accessdate = }}, or at* {{cite web | url = https://www.ncbi.nlm.nih.gov/Structure/bwrpsb/bwrpsb.cgi| title = the Batch CD-Search | author = | authorlink = | coauthors = | date = | format = | work = | publisher = United States National Center for Biotechnology Information | pages = | language = | archiveurl = | archivedate = | quote = | accessdate = }}, that allows the computation and download of annotation for large sets of protein queries.
