Gene Databases

IAPC NAUKA – NAUKA International Academic Publishing Company (Russia)
IARC p53 Database – IARC Database of somatic p53 mutations
IARC TP53 mutation Database – International Agency for Research on Cancer
IBB – Institute of Biochemistry and Biophysics (Warsaw); Poland EMBnet node
ICGEB – International Center for Genetic Engineering and Biotechnology (Trieste / Italy)
ICTVDatabase – Universal virus taxonomy Database
IDatabase – Internet Directory for Botany
IGC – Bioinformatics and Computational Unit of the Instituto Gulbenkian de Ciencia; Portugal EMBnet Node
IGS – Information G & eacute; et & Structurale (Structural and Genetic Information Laboratory) (Marseille / FR)
IJC – Internet Journal of Chemistry
Illumina, Inc.
IMGT – ImMunoGeneTics Database [Mirror at EBI]
IMPBIO – Computer Science, Mathematics, Physics in Molecular Biology
InBase – Inteins Database from the New England Biolabs
Incyte Pharmaceuticals, Inc.
Informaworld
Ingenuity Systems, Inc. – knowledge management for Life Sciences
Initiation factors – Entries of translation initiation factors in UniProtKB/Swiss-Prot
InParanoid – Eukaryotic ortholog groups
Insects
IntAct
Integrated Genomics, Inc.
Integrins – from Wikipedia
Interactive periodic table of the elements
International Biosciences
International venom and toxin Database
InterPro – Integrated Resources of Proteins Domains and Functional Sites
Intuitive Genomics – bioinformatics and genomics consulting services
Intute (ex- OMNI – Organising Medical Networked Information)
Invertebrates
Invitrogen
Ion Channel Media Group
Ion Source – Mass spectrometry resource
IOS Press
IR – Inter-Research Science Publisher
ISB – In Silico Biology
ISCB – International Society for Computational Biology
ISCO – International Stem Cell Corporation
ISIS – International Species Information System
ISREC 
ISSN – International Standard Serial Number organization
IUBMB – International Union of Biochemistry and Molecular Biology
IUPAC – International Union of Pure and Applied Chemistry
JAMA – The Journal of the American Medical Association publications
Janssen-genomics
Japanese GenomeNet
Japanese Patents and Inventions
JCBN – IUPAC-IUB Joint commission on Biochemical Nomenclature (JCBN)
JCVI – J. Craig Venter Institute
JGI – Doe Joint Genome Institute
JL – John Libbey Eurotext
Johnson & Johnson
Journal index from Genamics.com
Journal index from Horizon Scientific Press
Jova Solutions
Jumper 2.0- knowledgebase search engine platform
JustBio – BioInformatics and web-services for molecular biology scientists
Karger AG
kDNA – Kinetoplast Minicircle Sequence Database
KDRI – Kazusa DNA Research Institute
KEGG – Kyoto Encyclopedia of Genes and Genomes
Keratech Diagnostics
KinBase
Kinematics
KISAC – Karolinska Institute (KI) Sequence Analysis Computer
Klotho – Biochemical compounds declarative Database
Kluyveromyces lactis annotation Database
KMbloodDatabase – Blood disease genes Database
KMbrainDatabase – Brain disease genes Database
KMcancerDatabase – Cancer disease genes Database
KMearDatabase – Ear disease genes Database
KMeyeDatabase – Eye disease genes Database
KMheartDatabase – Heart disease genes Database
KMmuscleDatabase – Muscle disease genes Database
KMsyndromeDatabase
KO – KEGG Orthology:
KuDOS Pharmaceuticals Ltd
Kurtis publishing house
L.lactis – Lactobacillus lactis subsp. lactis strain IL1403 genome Database
L.plantarum – Lactobacillus Genome Project
LabAction – Biology video sharing site
LabLife – Lab tools for your lab research
Labome (was ExactAntigen.com) – a curated database of antibody products
Labome – Common Laboratory services
Lambda-plus
LAROVA GmbH
LCB – Linnaeus Centre for Bioinformatics
LDLR mutation – Human LDLR mutation Database (Familial hypercholesterolemia)
LED – Lipase Engineering Database
Lee BioSolutions, Inc.
LegioList – Legionella pneumophila Paris strain and Legionella pneumophila Lens strain GenoList browser at Institut Pasteur
Leproma – Mycobacterium leprae strain TN genome Database
LGIC – Ligand Gated Ion Channel subunit Database
LGN – Leishmania major Genome Project
Library of Congress
LIC Generator – A web-based software for Ligation Independent Cloning vector and primer design
Life Science – Jobs in Ireland
Ligand Pharmaceuticals, Inc
LIMS By Core Informatics – software company focused on delivering fully customized web-based Laboratory Information Management Systems (LIMS)
Linscott’s Directory of Immunological & Biological Reagents
LIPID MAPS – LIPID Metabolites And Pathways Strategy
List of Bacterial Names with Standing in Nomenclature
List of complete archaeal proteomes in Swiss-Prot (HAMAP)
List of complete bacterial proteomes in Swiss-Prot (HAMAP)
List of mutation databases from IMT (Finland)
List of mutation databases from OMIM
ListiList – Listeria monocytogenes and Listeria innocua GenoList browser at Institut Pasteur
LOVD – Leiden Open Variation database
LPSN – List of Prokaryotic Names with Standing in Nomenclature
lsu rRNA – Large ribosomal subunit at the European ribosomal RNA database
LW&W – Lippincott Williams and Wilkins
M.genitalium UniProtKB/Swiss-Prot entries, gene names and WWW servers
M.jannaschii UniProtKB/Swiss-Prot entries, gene names and WWW servers
M.pneumoniae UniProtKB/Swiss-Prot entries, gene names and WWW servers
M.pneumoniae – Mycoplasma pneumoniae genome project
M.tuberculosis structural genomics consortium
MaiDatabase (autoimmune)
MaizeDatabase – Maize genome Database
Malaria – WHO – Malaria Database (from WHO)
Malaria parasite metabolic pathways
Manchester – Manchester University Bioinformatics unit (U.K.)
Martin Dunitz Publishers – has joined Informa Healthcare
Mary Ann Liebert, Inc
Mass spectrometry data
MATDatabase – MIPS Arabidopsis thaliana Database
Matrix Science Ltd
MDatabase – Metalloprotein Site Database and Browser
MDC:Bioinf – Department of Bionformatic of the Max Delbruck Center for Molecular Medicine (Germany)
Medical Journal Online – List of journals from the University of Texas Research Medical Library
Medical software advice
MedicineNet, Inc – Medical Reference Site
MedIT – Electronic Medical Records (EMR), EHR & Practice Management Software
Medline full text lists – List of journals in Medline with Web sites
MedlinePlus – NLM list of resources for health questions
Medweb
Mendel – Plant gene nomenclature database from CPGN
MEPD – Medaka Expression Pattern Database
Merck Serono
MEROPS – Peptidase Database
Merriam-Webster dictionary and thesaurus
Mesothelioma symptoms
Metaphorics, LLC
Metazome – Phylogenomic analysis of metazoan gene families
MGC – Mammalian Gene Collection
MgDatabase – Mycoplasma genitalium genome Database at JCVI-CMR
MGI – Mouse Genome Informatics (includes MGD)
MGRC – Malaysian Genomics Resource Centre
MGS – Molecular Biological Server (Novosibirsk / Russia)
MIAPEGelDatabase 
MicrobeWorld – Educational site on microbes
Microbiologyprocedure.com – Providing information on Microbiology basics, techniques, procedures, methods, applications and diseases
MICRO-NET – Microbial Information Network of China
Microrite, Inc
Migenix
MILANO – Microarray Literature-based Annotation
Millennium Pharmaceuticals, Inc.
Millipore Co.
Miltenyi
MINT – Molecular INTeraction database
MIPS – Munich Information Centre for Protein Sequences (Germany)
Miscellaneous
Miscellaneous medical references sites
Miscellaneous scientific references sites
Mitochondrial carriers pages from Nelson’s lab
Mitochondrion and chloroplast
MitoDat – Mendelian Inheritance and the Mitochondrion Database
Mitsui Chemicals America, Inc.
MjDatabase – Methanococcus jannaschii genome Database at JCVI-CMR
Mm UniGene – Mouse transcripts in GenBank (EST clusters)
MNCDatabase – MIPS Neurospora crassa Database
MoDatabasease – Database of comparative protein structure models
Modules – Extracellular proteins modules (domains)
Molecular Biology Gateway from Horizon Press
Molecular Biology Online Resources – lists of Molecular Biology departments, s, journals, books and reviews, employment opportunities and events
Molecular Imaging by Diagnostic Imaging
Molecular Station – Molecular Biology Protocols and Bioinformatics
Molecules To Go – Molecules To Go (formerly known as Molecules R Us), browser for PDatabase
MOLOGEN AG
Monosaccharide browser – Space filling Fischer projection for monosaccharides
Mouse gene knockouts Database
MP Biomedicals – (formerly ICN Biomedicals & Qbiogene)
MP Sciences
MPDatabase – Molecular probe Database
MSA – Mycological Society of America
MtDatabase – Mycobacterium tuberculosis strain Oshkosh genome Database at JCVI-CMR
MUMDatabase – MIPS Ustilago maydis Database
MutaProt – Comparison of PDatabase files which differ by point mutations
Mycobacterium – Mycobacterium genome projects at Sanger Institute
MycoBank
Mycoplasma synoviae genome Database – Brazilian Genome
MypuList – Mycoplasma pulmonis GenoList browser at Institut Pasteur
Myriad Genetics, Inc.
myScience.ch – the Swiss Portal for Research and Innovation
N.europaea – Nitrosomonas europaea genome project
N.meningitidis B – Neisseria meningitidis serogroup B strain MC58 genome Database at JCVI-CMR
NAL – AGIS – Access to many plant genome databases at the National Agricultural Library
National Foundation for Infectious Diseases (NFID)
Nature
NCBI Newsletter
NCBI protein resources
NCBI Taxonomy
NCBI Taxonomy Browser
NCBI – National Center for Biotechnology Information
NCF1base – Human NCF1 mutation Database
NCF2base – Human NCF2 mutation Database
NCGR – National Center for Genome Resources
NCL – Neuronal Ceroid Lipofuscinoses mutation Database
NEB – New England Biolabs, Inc.
Nesseria – Neisseria genome projects at Sanger Institute
Network Science
Neuromuscular diseases web site
Neurospora crassa Database
Neurospora crassa Gene List
New Scientist
NEXTDatabase – The Nematode Expression Pattern DataBase
NGP – Neurospora crassa genome project at New Mexico
NHGRI Dog Genome Project
NIG – National Institute of Genetics of Japan
NIH – Computational Molecular Biology at NIH
NLM – National Library of Medicine
Nobel Foundation 
Nomenclature and entries of allergens in UniProtKB/Swiss-Prot
Nomenclature and entries of Glycosyl hydrolases in UniProtKB/Swiss-Prot
Nonlinear Dynamics Ltd
Novartis
Novo Nordisk
Novozymes
NPD – Nuclear Protein Database
NRC Research Press
NRSub – Bacillus subtilis non-redundant Database
NucleaRDatabase – Federated Database on nuclear receptors
Nucleotide and related databases
Ocimum Biosolutions – BioIT, Microarrays and contract research services
Ocimum Biosolutions – Integrated genomics company
OCRL1 – OCRL1 mutation Database (Lowe Syndrome)
O-GlycBase – O-glycosylated proteins Database
OMA – Orthologs Matrix Project (OMA)
OMG LSR – Object Management Group Life Science Research task force
OMIA – Online Mendelian Inheritance in Animals
OMIM – Online Mendelian Inheritance in Man
OMNIMD – Certified Electronic Medical Records (EMR) and Practice Management product and services
Online Cancer Guide – A comprehensive resource providing complete information on various types of cancers
OPD – Open Proteomics Database (currently down)
Open Biosystems – part of Thermo Fisher Scientific
Opsona Therapeutics – drug development company specialising in the human immune system
Optic – Orthologous and paralogous transcripts in clades
ORD – NIH Office of Rare Diseases
Organic Chemistry Portal
Orphanet – The portal of rare diseases and orphan drugs
OrthoDatabase Hierarchical catalog of eukaryotic orthologs
OrthoMCL Database Ortholog grouping for protein sequences from multiple genomes
Oryza sativa UniProtKB/Swiss-Prot entries, gene names and WWW servers
Oryzabase – Japanese rice genome Database
Other links
Others
OUP – Oxford University Press
P.aeruginosa project – Pseudomonas aeruginosa genome project
P.falciparum Sanger – P.falciparum genome project at Sanger
P.falciparum – Plasmodium falciparum Gene Sequence Tag project
P.marinus – Prochlorococcus marinus genome project
P212121 – Crystallography supplies, tools & chemicals
P450 – Directory of P450-containing systems
PAHDatabase – Human phenylalanine hydroxylase (PAH) mutation Database
Panther – Functional classification system
Parasite genomes Database and resources
Partek, Inc. – Pattern Analysis and Recognition Technologies
Parthenon Publishing Group
Pasteur – Institut Pasteur (Paris / FR)
PatBase – P-type ATPase Database
Patents databases
PBIL – Pole Bio-informatique Lyonnais (Lyon / FR)
PC – Pneumocystis carinii genome project
PDatabase Quarterly Newsletter
PDatabase – Protein Data Bank
PDatabaseTM – Protein Data Bank of Transmembrane Proteins
PDE – Phosphodiesterases
Pedestrian guide to analysing sequence databases – from Burkhard Rost and Reinard Schneider
Peptide Guide
PeptideAtlas – peptides identified in tandem mass spectrometry proteomics experiments
Periodic table of the elements
Peroxibase – the Peroxidase database
Pfam – Protein families Database (HMM derived) [Mirrors at JFRC (USA), CCBB (South Korea) Institute, UK, Karolinska Institutet (Sweden)]
Pfizer, Inc.
Phage Sequence Databank at Sdsu Center for Universal Microbial Sequencing (currently not working)
PhageBase
Pharmaceutical Press
Pharmaceutical Research and Manufacturers of America membership list
PharmaOpportunities – Pharmaceutical Jobs from Pharmaopportunities
Pharsight Corp.
Phospho.ELM – Phosphorylation sites Database
PhosphoSite – Database of phosphorylation sites in human and mouse proteomes
PhotoList – Photorhabdus luminescens strain TT01 GenoList browser at Institut Pasteur
PhRMA – Pharmaceutical Research and Manufacturers of America
Phycomyces Web site – Resource site for scientists working on Phycomyces
PhyloFacts – Pre-calculated structural and phylogenomic analyses of protein families and domains
Phylogenetics and taxonomy databases & resources
PhylomeDatabase – Database for phylomes (collections of phylogenetic trees for all proteins encoded in a given genome)
Picornavirus – Picornavirus home page and access to Database
PicSNP – Catalog of non-synonymous SNP
PIRSF – Protein classification system
Pisum sativum (pea)
PKR – Protein Kinase Resource
PLACE – Plant cis-acting regulatory DNA elements Database
Plant Gene Register
PlantCARE – Plant cis-acting regulatory DNA elements Database
Plants
PlasmoDatabase – P.falciparum genome Database
PMD – Protein Mutant Database
PombeNet – Forsburg lab pombe pages
Portland Press
Post-translational modifications databases and resources
PPAP – Plant Proteome Annotation Project 
PPAR – Peroxisome Proliferator-Activated Receptor resource
PPI – JCB Protein-Protein Interaction 
PPI – Plasma Proteome Institute
P-POD – Princeton Protein Orthology Database with an emphasis on providing information about disease-related genes
PREMIER Biosoft International
PRF – Protein Research Foundation
PRIDE – PRoteomics IDEntifications database
Primer on molecular genetics – from the US Department of Energy
PrimerDesign
PRINTS – Protein Motif fingerprint Database
Prion – Wikipedia Prion and prion disease
Prionics AG
ProDom – Protein domain Database (Automatically generated)
Progenetix CGH database – Molecular Cytogenetics in Leukemia and Cancer
Progeny Software, LLC
Promega Corp.
PROPHECY – PROfiling of PHEnotypic Characteristics in Yeast
PROSITE 
Protein 3D structure related databases
Protein Biotechnologies Inc.
Protein Clusters – NCBI collection of related protein sequences (clusters)
Protein Structures Guide
Proteome Consult – Consulting & Project Management for Protein Analysis & Proteomics
Proteome Factory (German version)
Proteomics databases and links
Proteomics Links page of the Swiss Proteomics Society
Proteomics Research
Proteus Biosciences Inc.
ProtoNet – Classification of the proteins into hierarchical clusters
Protoxin Life Sciences – Genomic DNA Extraction Kit
Prous Science – Medical and drug information provider
Prozomix – Recombinant enzymes and proteins
ProZyme, Inc.
Publishers
PubList.com – Internet Directory of Publications
PubMed Medline server
Pulse Group Inc.
PyloriGene – Helicobacter pylori GenoList browser at Institut Pasteur
Pyrococcus abyssi genome and re-annotation Database
Pyrococcus sp. OT3
PZR – Bioinformatics at the Proteome Center Rostock (Germany)
QIAGEN GmbH
Quantum Pharmaceuticals – Drug Discovery and Computational Chemistry Software
Quick Guides – EMBnet Quick guides
R&D Chemicals – Rare Chemicals Database
R.bellii strain RML369-C UniProtKB/Swiss-Prot entries, gene names and WWW servers
R.conorii strain Malish 7 UniProtKB/Swiss-Prot entries, gene names and WWW servers
R.felis strain URRWXCa12 UniProtKB/Swiss-Prot entries, gene names and WWW servers
R.palustris – Rhodopseudomonas palustris genome project
R.prowazekii UniProtKB/Swiss-Prot entries, gene names and WWW servers
R.solanacearum – Ralstonia solanacearum genome project
R.typhi strain Wilmington UniProtKB/Swiss-Prot entries, gene names and WWW servers
RAD – RNA abundance Database
RAG1base – Human RAG1 mutation Database
RAG2base – Human RAG2 mutation Database
RatMAP – Rat genome Database
RB1base – Human retinoblastoma-associated protein (RB) mutation Database
RDP – Ribosomal Database Project
Reactome – a curated knowledgebase of biological pathways
REBASE – Restriction enzymes and methylases Database
Redasoft – software for molecular biology
RefDoc (ex-Article@INIST) – Scientific and Technical Information Institute articles and monographs Database
References (bibliographic databases)
Regulon Database
Relibase – Receptor/ligand complexes Database [Mirror in USA]
ReNaBI – French bioinformatics platforms network
Repligen Corp.
ResearchJOBS
RESID – Database of Amino Acid Modifications
Resources linking to journals home pages
Retina International Scientific Newsletter – Information on Retinal genes, proteins and diseases
RetNet – Retinal Information Network
ReutersHealth – Reuters Medical News
RGD – Rat genome Database
RGP – Rice Genome Research Program
RhizoBase – The Genome Database for Rhizobia
Rhizobium pNGR234a analysis
Rhizobium pNGR234a UniProtKB/Swiss-Prot entries, gene names and WWW servers
Rhodobacter sphaeroides genome Database
RicBase – Rickettsia conorii strain Malish 7 genome project
Rice genome annotation project – at MSU (Michigan State University)
Rice Genome Newsletter
Rishi Biotech Bio-IT company offering bioinformatics solutions to the Pharma, Healthcare and Biotech industries
Rn Unigene – Rat transcripts in GenBank (EST clusters)
RNA editing – RNA editing site
RNA Helicase database
RNAmod Database – RNA modification Database
RNase P – Ribonuclease P Database
Roche Bioscience
Rockfeller University Press
Rosetta Biosoftware – Informatics solutions for life sciences research
S. am – Streptococcus suis genome project at Sanger Institute
S.aureus – Staphylococcus aureus strain NCTC 8325 genome project
S.avermitilis – Streptomyces avermitilis strain MA-4680 genome project
S.coelicolor – Streptomyces coelicolor genome project at Sanger Institute
S.meliloti – Sinorhizobium meliloti genome project
S.mutans – Streptococcus mutans strain UAB159 genome project
S.pombe genome project
S.pombe UniProtKB/Swiss-Prot entries, gene names and WWW servers
S.pyogenes M1 – Streptococcus pyogenes strain SF370 serotype M1 genome project
S.pyogenes – Streptococcus pyogenes genome project at Sanger Institute
S.uberis – Streptococcus uberis genome project at Sanger Institute
SABIO Reaction Kinetics Database
Saccharomyces Genomes – Finding functional features in Saccharomyces Genomes by phylogenetic footprinting
SagaList – Streptococcus agalactiae strain NEM316 GenoList browser at Institut Pasteur
Sage Science Press
Salmonella – Salmonella genome projects at Sanger Institute
SANBI – South African BioInformatics Institute
sanofi-aventis
SARomics Biostructures
SBASE – SBASE domain Database
SBC – Stockholm Bioinformatics Center
SBI – Structural Bioinformatics, Inc.
SCDatabase – Stem cell Database
SciCentral – Gateway to the best science directories
Science
Science Clarified
Science News Online
Science News – Science-News.org Your Science and Technology News Headquarters
Science.org – a portal to promote and support the gain of knowledge
ScienceDaily Magazine
Scientific American
Scientz – manufacturer of life science instruments
Scitable by Nature Education – A Collaborative Learning Space for Science Undergraduates
Scitech
SCMD – Saccharomyces Cerevisiae Morphological Database
SCOP – Structural classification of proteins [Mirrors]
SDAP – Structural database of allergenic proteins
SDatabase – Society for Developmental Biology
SeattleSNPs – UW-FHCRC Variation Discovery Resource
SeqAnalRef – Sequence analysis bibliographic references
Sequel EMR – Electronic Medical Records software
Sequence similarity searches primer – from Keith Robison / Harvard
Sequenom Industrial Genomics
SGD – Saccharomyces genome Database
SGI – high-performance computing
SGM – Society for General Microbiology
SGM – Society for General Microbiology publications
Shire Pharmaceuticals Group plc
SIB 
SICB – Society for Integrative and Comparative Biology
Sigma-Aldrich
Simplexity Health – was Cell Tech
Singer – Singer Center (Hinxton / UK)
SIPHS – Question & Answer System for Life Sciences Researchers
SIR – SIR Publishing
Sirius Analytical – automated pKa, logP/D and solubility measurement
SKS Science
Slack, Inc.
SMART – Simple Modular Architecture Research Tool
SMD – Stanford microarray Database
smiRNADatabase 
Snake database at Natural Toxins Research Center
Snapdragon (A.majus) web site
SNF2 – SNF2 family protein resource
Some biological societies and organizations
SorghumDatabase – Sorghum genome Database
Southern Lights Biomaterials
SoyBase metabolic Database – Metabolic subset of the soybean genome Database
SoyBase – Soybean genome Database
SPAD – Signaling pathway Database
Species 2000 – Project to provide in an electronic form the names and taxonomy of all known species
Species specific databases
SpheriTech – consultancy and production of custom synthesis of peptides, related molecules and small organics
Springer
SRPDatabase – Signal Recognition Particle Database
SSFA-GPHR – Glycoprotein Hormone Receptors database
ssu rRNA – Small ribosomal subunit at the European ribosomal RNA database
STACK – Sequence Tag Alignment and Consensus Knowledgebase (Database of consensus human ESTs)
StrainInfo.net – Navigating microbial space
StreptoPneumoList – Streptococcus pneumoniae strains R6 and Tigr4 GenoList browser at Institut Pasteur
Striking Development, Inc.
STRING – Search Tool for the Retrieval of Interacting Genes/Proteins
SubtiList – Bacillus subtilis GenoList browser at Institut Pasteur
Sulfolobus solfataricus P2 genome project
SUPERFAMILY – Library of profile HMMs representing all proteins of known structure
Surgical Procedures by Procedures Consult
SVD – EBI Sequence variation Database
Swiss Human Plasma protein dataset 
Swiss Life Sciences database
SWISS-3DIMAGE 
SWISS-MODEL Repository 
SwissVar 
Symyx Technologies, Inc
Synechocystis strain PCC 6803 UniProtKB/Swiss-Prot entries, gene names and WWW servers
Syngenta
T&F – Taylor & Francis Group
T.volcanium – Thermoplasma volcanium genome project
T.whipplei – Tropheryma whipplei genome project at Sanger Institute
TAIR – The Arabidopsis Information Resource
Taxonomy – UniProt Taxonomy Browser
TC-Database – Transport Classification System from Milton Saier
Techcuriosity
Telethon Italy
Textpresso – WormBase Literature Search
TFII – Basal transcription factors
TGDatabase – Tumor gene Database
The Aspergillus web site
The Bacteriophage Ecology Group
The Gene Index Project – ex-TIGR Human Gene Indices
The Genetics Company
The Genomics Center
The International HapMap Project
The Nobel prize Internet Archive
The Peptide Resource Page – your complete guide to peptide research and suppliers
The research
The Scientist
The Tree of life – Collection of WWW pages on phylogeny and biodiversity of organisms
The Venom Composition – Information on conotoxins from a Web site on cone shells
The World-2DPAGE Constellation 
Thermo Scientific
theScienceJobs.com
TheScientificWorld – Portal to science resources
Thieme
TIBCO Software, Inc. – Spotfire: solutions for life sciences
TIGR Potato – TIGR Potato Functional Genomics project (at JCVI)
TIGRFAMs – TIGR protein families Database
TimeLogic – biocomputing solutions
TmDatabase – Thermotoga maritima genome Database at JCVI-CMR
tmRDatabase – tmRNA Database
tmRNA 
Toplab GmbH
TOXNET – NLM Toxicology Data Network
ToxoDatabase – Toxoplasma gondii genome project
Tox-Prot – The UniProtKB/Swiss-Prot Toxin Annotation Program
Tox-Prot – Toxin Annotation Project 
ToxSeek – Toxicology and Environmental Search and Clustering Engine
TpDatabase – Treponema pallidum genome Database at JCVI-CMR
Tranche – Peer-to-peer distributed file system
TRANSFAC – Transcription factors Database
Transition Therapeutics Inc.
TRANSPATH – Signal Transduction Browser
TreeBASE – Relational Database of phylogenetic information
TreeFam – Tree families database of phylogenetic trees of animal genes
Tripos Inc. – a Certara company
tRNA – tRNA compilation from the University of Bayreuth
Trypanosoma brucei genome project
Trypanosoma cruzi genome project
TTD – Therapeutic Targets Database
TubercuList – Mycobacterium tuberculosis strain H37Rv GenoList browser at Institut Pasteur
Tyrian Diagnostics – ex-Proteome Systems Ltd
U.urealyticum – Ureaplasma urealyticum genome WWW site
UbiProt – Database of ubiquitylated proteins
UCLA – UCLA Bioinformatics Institute
UCSC Archeal Genome Browser
UCSC Genome Browser
Ufumes Nigerian Bioscientist – online educational, informational & academic resources for bioscientists
UniPathway – Metabolic pathways database
UniProt Taxonomy Browser
UniProt – the universal protein resource (including UniProtKB -Swiss-Prot and TrEMBL-, UniRef, UniParc)
UniProtKB/Swiss-Prot journals list – Provides direct links to most biological journals home pages
UniProtKB/Swiss-Prot list of nomenclature related references for proteins
University of Chicago Press
Urban and Fischer Verlag – has joined the Elsevier Group
USA
USDA Agricultural Biotechnology Intellectual Property
USPTO patent Database – USA Patent and Trademark Office patent Database
Vadlo – search engine specific to Life Sciences
VcDatabase – Vibrio cholerae genome Database at JCVI-CMR
VDR – Vitamin D Nuclear Receptor
VectorDatabase – Vector sequence Database
Vernenium
Vertebrates
Vertex Pharmaceuticals
ViralZone 
VirOligo- virus-specific oligonucleotides database
VirtualChemistry
Viruses and phages
Visible Human at EPFL – EPFL server for the images of the “Visible Human” NLM project
VMD2 mutation – Human VMD2 mutation Database
Voltage-gated Ion Channels
VSNS BioComputing courses
VSP – VSP International Science Publishers
vWF mutation – Human von Willebrand factor (vWF) mutation Database
VZN – publisher of the journal for natural research
W de G – Walter de Gruyter and Co.
WBS – W.B. Saunders Co. has joined the Elsevier Group
WDCM – World Data Center for Microorganisms
WD-repeat – WD-repeat proteins family
WebMD – Guide to the Internet medicine
Weizmann Bioinfo/BCU – Weizmann Institute of Science Bioinformatics and Biological Computing
WikiPatents – the largest database of patents open for public comment on the internet
Wikipedia, The Science portal
Wiley – John Wiley and Sons [Mirror in the U.K.]
Wiley-VCH
WITA – Wittmann Institute of Technology and Analysis of Biomolecules GmbH
Wnt homepage
WorfDatabase – C. elegans ORFeome cloning project
World Science – Science News 
WORLD-2DPAGE List 
World-2DPAGE Repository 
WormBase – C.elegans Database [Mirror at Sanger]
WormPep – C.elegans proteins Database
Worthington Biochemical Corp.
Worthington enzyme manual
WRN – Human WRN mutation Database (Warner disease)
Wyeth Pharmaceuticals – Health Care Professional Resources
X.fastidiosa – Xylella fastidiosa genome project
X-ALD mutation – Human ABCD1 mutation Database
Xenometrix AG
Xerion Pharmaceuticals GmbH
Yeast (S. cerevisiae) UniProtKB/Swiss-Prot entries, gene names and cross-references to SGD
Yeast Comparative Genomics
Yeast snoRNA – Yeast small nucleolar RNAs Database
Yersinia – Yersinia genome projects at Sanger Institute
YMPL – Yeast Membrane Protein Library
YRC – Yeast Resource Center
YTPDatabase – Yeast Transport Protein Database
  1. ZFIN – Zebrafish Information Network