Conserved Domain Database

Last updated
CDD
US-NLM-NCBI-Logo.svg
Content
DescriptionConserved Domain Database for the functional annotation of proteins.
Contact
Research center National Center for Biotechnology Information
AuthorsAron Marchler-Bauer
Primary citationMarchler-Bauer & al. (2013) [1]
Release date2003
Access
Website https://www.ncbi.nlm.nih.gov/Structure/cdd/cdd.shtml

The Conserved Domain Database (CDD) is a database of well-annotated multiple sequence alignment models and derived database search models, for ancient domains and full-length proteins. [1]

Contents

Philosophy

Domains can be thought of as distinct functional and/or structural units of a protein. These two classifications coincide rather often, as a matter of fact, and what is found as an independently folding unit of a polypeptide chain also carries specific function. Domains are often identified as recurring (sequence or structure) units, which may exist in various contexts. In molecular evolution such domains may have been utilized as building blocks, and may have been recombined in different arrangements to modulate protein function. CDD defines conserved domains as recurring units in molecular evolution, the extents of which can be determined by sequence and structure analysis.

The goal of the NCBI conserved domain curation project is to provide database users with insights into how patterns of residue conservation and divergence in a family relate to functional properties, and to provide useful links to more detailed information that may help to understand those sequence/structure/function relationships. To do this, CDD Curators include the following types of information in order to supplement and enrich the traditional multiple sequence alignments that form the foundation of domain models: 3-dimensional structures and conserved core motifs, conserved features/sites, phylogenetic organization, links to electronic literature resources.

Content

CDD content includes NCBI manually curated domain models and domain models imported from a number of external source databases (Pfam, SMART, COG, PRK, TIGRFAMs). What is unique about NCBI-curated domains is that they use 3D-structure information to explicitly define domain boundaries, align blocks, amend alignment details, and provide insights into sequence/structure/function relationships. Manually curated models are organized hierarchically if they describe domain families that are clearly related by common descent. To provide a non-redundant view of the data, CDD clusters similar domain models from various sources into superfamilies.

Searching the database

The collection is also part of NCBI'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's Entrez system, and CDD's collection of models can be queried with novel protein sequences via * "the CD-Search service". United States National Center for Biotechnology Information., or at* "the Batch CD-Search". United States National Center for Biotechnology Information., that allows the computation and download of annotation for large sets of protein queries.

Related Research Articles

<span class="mw-page-title-main">National Center for Biotechnology Information</span> Database branch of the US National Library of Medicine

The National Center for Biotechnology Information (NCBI) is part of the United States National Library of Medicine (NLM), a branch of the National Institutes of Health (NIH). It is approved and funded by the government of the United States. The NCBI is located in Bethesda, Maryland, and was founded in 1988 through legislation sponsored by US Congressman Claude Pepper.

<span class="mw-page-title-main">Entrez</span> Cross-database search engine for health sciences

The Entrez Global Query Cross-Database Search System is a federated search engine, or web portal that allows users to search many discrete health sciences databases at the National Center for Biotechnology Information (NCBI) website. The NCBI is a part of the National Library of Medicine (NLM), which is itself a department of the National Institutes of Health (NIH), which in turn is a part of the United States Department of Health and Human Services. The name "Entrez" was chosen to reflect the spirit of welcoming the public to search the content available from the NLM.

A sequence profiling tool in bioinformatics is a type of software that presents information related to a genetic sequence, gene name, or keyword input. Such tools generally take a query such as a DNA, RNA, or protein sequence or ‘keyword’ and search one or more databases for information related to that sequence. Summaries and aggregate results are provided in standardized format describing the information that would otherwise have required visits to many smaller sites or direct literature searches to compile. Many sequence profiling tools are software portals or gateways that simplify the process of finding information about a query in the large and growing number of bioinformatics databases. The access to these kinds of tools is either web based or locally downloadable executables.

The European Bioinformatics Institute (EMBL-EBI) is an intergovernmental organization (IGO) which, as part of the European Molecular Biology Laboratory (EMBL) family, focuses on research and services in bioinformatics. It is located on the Wellcome Genome Campus in Hinxton near Cambridge, and employs over 600 full-time equivalent (FTE) staff.

<span class="mw-page-title-main">Pfam</span> Database of protein families

Pfam is a database of protein families that includes their annotations and multiple sequence alignments generated using hidden Markov models. Last version of Pfam, 36.0, was released in September 2023 and contains 20,795 families. It is currently provided through InterPro database.

InterPro is a database of protein families, protein domains and functional sites in which identifiable features found in known proteins can be applied to new protein sequences in order to functionally characterise them.

The completion of the human genome sequencing in the early 2000s was a turning point in genomics research. Scientists have conducted series of research into the activities of genes and the genome as a whole. The human genome contains around 3 billion base pairs nucleotide, and the huge quantity of data created necessitates the development of an accessible tool to explore and interpret this information in order to investigate the genetic basis of disease, evolution, and biological processes. The field of genomics has continued to grow, with new sequencing technologies and computational tool making it easier to study the genome.

The Biomolecular Object Network Databank is a bioinformatics databank containing information on small molecule structures and interactions. The databank integrates a number of existing databases to provide a comprehensive overview of the information currently available for a given molecule.

The Reference Sequence (RefSeq) database is an open access, annotated and curated collection of publicly available nucleotide sequences and their protein products. RefSeq was introduced in 2000. This database is built by National Center for Biotechnology Information (NCBI), and, unlike GenBank, provides only a single record for each natural biological molecule for major organisms ranging from viruses to bacteria to eukaryotes.

<span class="mw-page-title-main">TSBP1</span> Protein found in humans

TSBP1 is a protein that in humans is encoded by the TSBP1 gene. TSBP1 was previously known as C6orf10. C6orf10 is an open reading frame on chromosome 6 containing a protein that is ubiquitously expressed at low levels in the adult genome and may play a role during fetal development. C6orf10 has been found to be linked to both neurodegenerative and autoimmune diseases in adults. Expression of this gene is highest in the testis but is also seen in other tissue types such as the brain, lens of the eye and the medulla.

<span class="mw-page-title-main">MALSU1</span> Protein-coding gene in the species Homo sapiens

MALSU1 is a gene on chromosome 7 in humans that encodes the protein MALSU1. This protein localizes to mitochondria and is probably involved in mitochondrial translation or the biogenesis of the large subunit of the mitochondrial ribosome.

GeneCards is a database of human genes that provides genomic, proteomic, transcriptomic, genetic and functional information on all known and predicted human genes. It is being developed and maintained by the Crown Human Genome Center at the Weizmann Institute of Science, in collaboration with LifeMap Sciences.

<span class="mw-page-title-main">FAM107B</span> Protein-coding gene in the species Homo sapiens

FAM107B is a gene found in humans. It is located on the minus strand of chromosome 10, p13, which is on the short arm of the chromosome. It has other alias names, such as C10orf45, FLJ45505, MGC11034 and MGC90261. The gene contains a conserved domain, DUF1151, which is a family that consists of several eukaryotic proteins of unknown function. FAM107B is expressed in most tissues in the human body without there being a high frequency in any one tissue. It is found in all stages of human development.

<span class="mw-page-title-main">Fam158a</span> Protein-coding gene in the species Homo sapiens

UPF0172 protein FAM158A, also known as c14orf122 or CGI112, is a protein that in humans is encoded by the FAM158A gene located on chromosome 14q11.2.

IBIS (server) (Inferred Biomolecular Interaction Server) is a server developed at National Institutes of Health. It reports, predicts and integrates multiple types of conserved interactions for protein.

<span class="mw-page-title-main">Multiple Epidermal Growth Factor-like Domains 8</span> Protein-coding gene in the species Homo sapiens

Megf8 also known as Multiple Epidermal Growth Factor-like Domains 8, is a protein coding gene that encodes a single pass membrane protein, known to participate in developmental regulation and cellular communication. It is located on chromosome 19 at the 49th open reading frame in humans (19q13.2). There are two isoform constructs known for MEGF8, which differ by a 67 amino acid indel. The isoform 2 splice version is 2785 amino acids long, and predicted to be 296.6 kdal in mass. Isoform 1 is composed of 2845 amino acids and predicted to weigh 303.1 kdal. Using BLAST searches, orthologs were found primarily in mammals, but MEGF8 is also conserved in invertebrates and fishes, and rarely in birds, reptiles, and amphibians. A notably important paralog to multiple epidermal growth factor-like domains 8 is ATRNL1, which is also a single pass transmembrane protein, with several of the same key features and motifs as MEGF8, as indicated by Simple Modular Architecture Research Tool (SMART) which is hosted by the European Molecular Biology Laboratory located in Heidelberg, Germany. MEGF8 has been predicted to be a key player in several developmental processes, such as left-right patterning and limb formation. Currently, researchers have found MEGF8 SNP mutations to be the cause of Carpenter syndrome subtype 2.

<span class="mw-page-title-main">Coiled-coil domain containing 42B</span> Protein found in humans

Coiled Coil Domain Containing protein 42B, also known as CCDC42B, is a protein encoded by the protein-coding gene CCDC42B.

<span class="mw-page-title-main">IFFO1</span> Protein-coding gene in the species Homo sapiens

Intermediate filament family orphan 1 is a protein that in humans is encoded by the IFFO1 gene. IFFO1 has uncharacterized function and a weight of 61.98 kDa. IFFO1 proteins play an important role in the cytoskeleton and the nuclear envelope of most eukaryotic cell types.

<span class="mw-page-title-main">Proser2</span> Protein-coding gene in the species Homo sapiens

PROSER2, also known as proline and serine rich 2, is a protein that in humans is encoded by the PROSER2 gene. PROSER2, or c10orf47(Chromosome 10 open reading frame 47), is found in band 14 of the short arm of chromosome 10 (10p14) and contains a highly conserved SARG domain. It is a fast evolving gene with two paralogs, c1orf116 and specifically androgen-regulated gene protein isoform 1. The PROSER2 protein has a currently uncharacterized function however, in humans, it may play a role in cell cycle regulation, reproductive functioning, and is a potential biomarker of cancer.

Transmembrane Protein 217 is a protein encoded by the gene TMEM217. TMEM217 has been found to have expression correlated with the lymphatic system and endothelial tissues and has been predicted to have a function linked to the cytoskeleton.

References

  1. 1 2 Marchler-Bauer, A.; Zheng, C.; Chitsaz, F.; Derbyshire, M. K.; Geer, L. Y.; Geer, R. C.; Gonzales, N. R.; Gwadz, M.; Hurwitz, D. I.; Lanczycki, C. J.; Lu, F.; Lu, S.; Marchler, G. H.; Song, J. S.; Thanki, N.; Yamashita, R. A.; Zhang, D.; Bryant, S. H. (2012). "CDD: Conserved domains and protein three-dimensional structure". Nucleic Acids Research. 41 (Database issue): D348–D352. doi:10.1093/nar/gks1243. PMC   3531192 . PMID   23197659.