| AdjustRangeAroundGene | Adjusts gene position |
| AminoAcids | Reference table of amino acids |
| AnnotateDataframe | Uses NCBI to annotate dataframe |
| AnnotateSNPFile | Annotates SNPs from a file |
| AnnotateSNPList | Annotates SNPs from NCBI |
| Comp | Produces a complementary DNA sequence |
| CompareTaxInfo | Identify common lineages of taxonomy terms |
| ConvertIUPAC | Convert IUPAC allele ambiguity abbreviation codes |
| ConvertProtein | Converts between different types of amino acid codes. |
| ConvertPubMedHeadings | Convert MEDLINE abbreviations to descriptions |
| Delay | Pauses the code for N seconds |
| DelayUntil | Pauses the code until a specified time |
| DivideString | Converts a string into fragment pieces based on a comma or other separator |
| GenomeSort | Sorts the genome by chromosome and position |
| GetARFromLocation | Filter your association results. |
| GetClosestGeneInfo | Obtains information about the closest genes to a list of SNPs. |
| GetGeneInfo | Obtains information about genes from NCBI |
| GetGeneNames | Obtains information about user defined genes from NCBI |
| GetGenesInRegion | Use this to find a list of genes in a particular region of the genome. |
| GetGenesInSNPs | Returns a vector of genes that the provided SNPs are located within. |
| GetGeneTable | Get intron/exon data from NCBI |
| GetGOs | Obtains Gene Ontologies from NCBI. |
| GetIDs | Obtain Entrez ID numbers |
| GetInteractions | Obtains interacting genes from NCBI |
| GetLDInfo | Obtain Linkage Disequilibrium (LD) information from HapMap for a given genomic region. |
| GetNeighGenes | Obtains neighbouring genes from NCBI |
| GetPathways | Obtains pathways from NCBI for a given set of genes |
| GetPhenotypes | Obtains pathways from NCBI for a given set of genes |
| GetPublishedGWAS | Obtains published GWAS association values |
| GetPubMed | Obtains references from NCBI's PubMed database |
| GetRegion | Use this to find out a list of snps or genes in a particular region of the genome |
| GetSNPFlankSeq | Obtains flanking sequence of a set of SNPs from NCBI |
| GetSNPInfo | Obtains NCBI information about one or more SNPs |
| GetSNPPosHapMap | Get the chromosomal position of any SNP on the HapMap. |
| GetSNPProxyInfo | Obtain proxy SNP information for a given SNP that is in close LD with your requested SNP. |
| GetSNPsInGenes | This function returns a vector of all the SNPs within the boundary of a gene or genes. |
| GetSNPsInRegion | Obtains a list of SNPs in a particular region of the genome. |
| GetTax | Find the NCBI Taxonomy ID number using a search term |
| GetTaxInfo | Get Taxonomy information |
| GetUniSTSFromName | Find information about UniSTS from NCBI |
| GetUniSTSInfo | Obtains information about a given UniSTS from NCBI |
| GetUniSTSSpecies | Obtains a list of species with data for a given UniSTS |
| gwas | Sample gwas data from a fictional project |
| IUPAC | Produces a dataframe of the IUPAC DNA allele ambiguity abbreviation codes |
| MakeExcel | Creates an Excel spreadsheet from genetic information. |
| MakeHTML | Converts genetic annotation dataframes into a HTML document. |
| MedlineAbbreviations | Produces a dataframe of the Medline abbreviations |
| MergeSNPsGenes | Function to merge SNP information and Gene information |
| NatureJobs | Obtains a dataframe of jobs listed on the NatureJobs.com website |
| OpenPDF | Opens an available PDF from the PudMed Central database |
| OpenPMID | Opens the PubMed webpage for a given PMID |
| OpenURL | Opens a webbrowser to a given address. |
| PrintFilters | Displays the list of gene filters available on NCBI. |
| PrintNCBI2RInfo | Displays summary information about NCBI2R. |
| PrintNCBI2ROptions | Displays the options in use by NCBI2R. |
| RemoveSpaces | Removes spaces at the start of a string and the end of a string |
| Rev | Produces a reverse DNA sequence |
| RevComp | Produces a reverse complement DNA sequence |
| ScanForGenes | Filters your association results for those found within a list of genes. |
| ScanForSNPs | Filters your association results for those that match a list of SNPs. |
| SplitGenes | Checks and converts SNP information for multiple genes. |
| UpdateCheck | Checks for a more recent version of NCBI2R |
| VisualiseRegion | Produces a graphical representation of the region, with the exons (optional). |