title: CDD: NCBI's conserved domain database.
abstract: NCBI's CDD, the Conserved Domain Database, enters its 15(th) year as a public resource for the annotation of proteins with the location of conserved domain footprints. Going forward, we strive to improve the coverage and consistency of domain annotation provided by CDD. We maintain a live search system as well as an archive of pre-computed domain annotation for sequences tracked in NCBI's Entrez protein database, which can be retrieved for single sequences or in bulk. We also maintain import procedures so that CDD contains domain models and domain definitions provided by several collections available in the public domain, as well as those produced by an in-house curation effort. The curation effort aims at increasing coverage and providing finer-grained classifications of common protein domains, for which a wealth of functional and structural data has become available. CDD curation generates alignment models of representative sequence fragments, which are in agreement with domain boundaries as observed in protein 3D structure, and which model the structurally conserved cores of domain families as well as annotate conserved features. CDD can be accessed at http://www.ncbi.nlm.nih.gov/Structure/cdd/cdd.shtml.
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA bauer@ncbi.nlm.nih.gov.
authors.forename: Aron
authors.initials: A
authors.lastname: Marchler-Bauer
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Myra K
authors.initials: MK
authors.lastname: Derbyshire
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Noreen R
authors.initials: NR
authors.lastname: Gonzales
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Shennan
authors.initials: S
authors.lastname: Lu
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Farideh
authors.initials: F
authors.lastname: Chitsaz
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Lewis Y
authors.initials: LY
authors.lastname: Geer
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Renata C
authors.initials: RC
authors.lastname: Geer
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Jane
authors.initials: J
authors.lastname: He
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Marc
authors.initials: M
authors.lastname: Gwadz
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: David I
authors.initials: DI
authors.lastname: Hurwitz
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Lanczycki
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Fu
authors.initials: F
authors.lastname: Lu
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Gabriele H
authors.initials: GH
authors.lastname: Marchler
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: James S
authors.initials: JS
authors.lastname: Song
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Narmada
authors.initials: N
authors.lastname: Thanki
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Zhouxi
authors.initials: Z
authors.lastname: Wang
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Roxanne A
authors.initials: RA
authors.lastname: Yamashita
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Dachuan
authors.initials: D
authors.lastname: Zhang
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Chanjuan
authors.initials: C
authors.lastname: Zheng
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bldg. 38 A, Room 8N805, 8600 Rockville Pike, Bethesda, MD 20894, USA.
authors.forename: Stephen H
authors.initials: SH
authors.lastname: Bryant
mesh_terms: D020816:Amino Acid Motifs; D000595:Amino Acid Sequence; D017124:Conserved Sequence; D066289:Data Curation; D030562:Databases, Protein; D017434:Protein Structure, Tertiary