CLEANER (cellbiol.com) Offers and useful alternative by stripping off nonsequence material (e.g. numbers) from nucleic acid and protein sequence. N.B. Particularly useful if you only want part of the DNA sequence from GenBank. Other sites offering a program to convert sequence format are Readseq (D.G. Gilbert, Univ. Indiana, U.S.A.). See also CONVERT
Sequence cleanup or formatting - offers: 60 characters per line, UPPER CASE, lower case, GenBank, and skyline
SeqScrub - is a web application that cleans up FASTA file headers and appends information from external databases (Reference: Foley G et al. (2019) Biotechniques. 67(2) :50-54).
Nucleic Acid Sequence Massager (formerly at Allotron Biosensor Corporation) - my favourite which in addition to removing spurious material (numbers, breaks, HTML, spaces) changes the format (upper to low case, complement, reverse, RNA to DNA, and triplets). It is also available here.
DNA Sequence Reverse and Complement (cellbiol.com) - With this tool you can reverse a DNA sequence, complement a DNA sequence or reverse and complement a DNA sequence. It also removes numbers, spaces, tabs, slash or non-GATC characters; and, allows conversion to upper or low case.
Secret encoding tool to encode secret messages in DNA sequence. Alternatively use DNA-0-gram Generator which allows one to Send a DNA-o-gram or Decode a DNA-o-gram.
Radioactive decay: see Radioactive Decay Calculator (1728 Software Systems) or Radioactive Decay Calculator 2 .
Centrifuge Helper (formerly D.Wang, Oklahoma State University, U.S.A.) provides one with maximum RPM, RCF (ave, min, max), K factor and comparison between two rotors (Sorvall, Beckman, Composite, Eppendorf, IEC and Piramoon) or Centrifuge Rotor Speed Calculator (Science Gateway).
Unit Converter - allows you to check all type of metric conversion of measurement units example: length, weight, height, area, temperature, time, pressure, speed, force, volume, data storage, fuel consumption, energy, degree, number converter, etc and also you can check online calculators basic & advanced math calculations like percentage, mortgage, fraction, interest rate, loan, tax, GST, tip, love, work, algebra, finance calculator and health calculator, etc..
Calculations (Zbio.net, Russia) Spectrophotometric measurement of nucleic acids concentration; Conversion: speed of rotation [krpm] - Relative Centrifuge Force [kg];
Conversion: radioactivity - biological amount of dNTP's;
Protocols (Zbio.net, Russia) - provides an incredible set of data and calculators for:
BioMath Calculators (Promega Corp., U.S.A.) - DNA and protein unit conversions; temperature (°C, °F & °K); and, Tm calculations for oligonucleotides, includes adjustments for Mg+2 concentration. Highly recommended.
Good Calculators - Free Online Calculators - This website provides a variety of online calculators, math and physics, engineering and conversion calculators.
Nucleic acid calculator (Kenkyuu-Ryuugaku NET) or Oligo Calc: Oligonucleotide Properties Calculator - From A260nm calculate DNA, RNA and oligonucleotide concentrations online. Similar site is here.
Physical mapping calculator - library construction (Andrei Grigoriev) - shows diagrammatically how the clone size and number influence what percentage of the genome is covered.
Biological buffer calculator (R. Beynon, Dept. Veterinary Preclinical Sciences Univ. Liverpool, England) - controls for concentration, ionic strength and temperature. Also available here. For pKa data see here (Sigma-Aldrich). Other buffer sites include: Science Gateway Buffer Calculator, and Buffer Calculator
Dilution Calculator (www.restrictionmapper.org/) - this very useful site for the mathematically challenged provides percent by weight, weight per volume and molarity of solution from stock solutions or solids.
Sites which permit one to carry out a variety of analyses include: