National National Center for Biotechnology Information http://www.ncbi.nlm.nih.gov/
National Institute of General Medical Sciences (NIGMS) http://www.nih.gov/about/almanac/organization/NIGMS.htm
Natural Natural Medicine comprehensive Database http://www.naturaldatabase.com/
Nematode A database on the nematode Pristionchus pacificus http://appadb.eb.tuebingen.mpg.de/
Network Biomolecular Interaction Network Database (BIND) http://bind.ca/
Paleontology Database Network http://www.ucmp.berkeley.edu/pdn/pdnhomelinks.htm
COXPRESdb: Coexpressed genes and networks in human and mouse http://coxpresdb.hgc.jp/
Neural The GENESIS Neural Database and Modeler's Workspace http://www.genesis-sim.org/hbp/
Neural Networks Databases http://www.fizyka.umk.pl/neural/node12.html
USC Brain Project (USCBP) wiki http://neuroinformatics.usc.edu/mediawiki/index.php/Main_Page
The ERROS Neural Database http://www.erros.co.uk/ERROSHelp1.htm
NeuronDB provides a dynamically searchable database of three types of neuronal properties: voltage gated conductances, neurotransmitter receptors, and neurotransmitter substances. http://senselab.med.yale.edu/neurondb/default.asp
This site hosts a public neurophysiology database. http://neurodatabase.org/
L-Neuron http://krasnow.gmu.edu/L-Neuron/L-Neuron/home.htm
Nitrogen OECD Nitrogen Balance Database http://www.oecd.org/document/29/0,2340,en_2649_33795_1890205_1_1_1_1,00.html
NMR NMRShiftDB (NMRShiftDB is a NMR database (web database) for organic structures and their nuclear magnetic resonance (nmr) spectra.) http://nmrshiftdb.ice.mpg.de/
SDBS, Spectral Database for Organic Compounds http://www.aist.go.jp/RIODB/SDBS/cgi-bin/cre_index.cgi
NMR database and develoment of software tools for rapid and reliable automatic Interpretation of MS-spectra http://www.eurocarbdb.org/databases/nmr-database
NMR Database (polymer) http://polymer.nims.go.jp/NMR/
NMR Related Database Resources http://www.bmrb.wisc.edu/www/resources.html
Noncoding DNA Noncoding DNA database http://jsm-research.imb.uq.edu.au/jsmgroup/links/323.aspx
CORG stands for COmparative Regulatory Genomics. Non-coding DNA segments that are conserved across multiple homologous genomic sequences are good indicators of putative regulatory elements. http://corg.eb.tuebingen.mpg.de/cgi-bin/index.pl
Nonsense SNP2NMD: A database of human single nucleotide polymorphisms causing nonsense-mediated mRNA decay http://bioportal.kobic.re.kr/SNP2NMD
Nucleic Nucleic Acid Database (NDB) http://ndbserver.rutgers.edu/
Protein-Nucleic Acid Complex Database is a database containing structural data of protein-nucleic acid complex. http://dna01.bse.kyutech.ac.jp/jouhou/3dinsight/complexdb.html
ProNIT database provides experimentally determined thermodynamic interaction data between proteins and nucleic acids. http://gibk26.bse.kyutech.ac.jp/jouhou/pronit/pronit.html
The Chemistry of Nucleic Acids (Nucleic acid information) http://home.nas.net/~dbc/cic_hamilton/nucleic.html
Nucleotide The EMBL Nucleotide Sequence Database : An annotated collection of all publicly available nucleotide and protein sequences http://www.ebi.ac.uk/embl/
 
NCBI BLAST 2.0 Nucleotide Database http://blast.wustl.edu/blast/ncbi20ntfmt.html
AANT (Amino acid Nucleotide interaction database) http://aant.icmb.utexas.edu/
International Nucleotide Sequence Database Collaboration. http://www.insdc.org/
JSNP ( A database of Japanese Single Nucleotide Polymorphism) http://snp.ims.u-tokyo.ac.jp/
Amino acid-nucleotide interaction database http://aant.icmb.utexas.edu/