What are the units for molecular weight of a protein sequence?

Question

I just sequenced a gene and used an online program to calculate the molecular weight. Does anyone know the units for the number I got?

Answer 1

If a protein's sequence is NOT known, it's mass is usually estimated somewhat crudely, by looking at how far it migrates, for example, in an electric field (called electrophoresis). In this case, the protein's weight is usually expressed as kilo Daltons (or kDa for short), named after British scientist John Dalton (see link below).



However, because of modern technology, many proteins' sequences are precisely known. Because many proteins' sequences are known, and because there are now machines (called mass spectrometers) that can measure a peptide's mass very precisely, protein's molecular weights are now usually expressed as Daltons, rather than kDa..



http://en.wikipedia.org/wiki/John_Dalton

Answer 2

It's probably in Daltons (Da) or unified atomic mass units (u), but you'd have to go through the answer again to see which one makes sense.

Answer 3

Molecular weight is commonly used in kDa (kilo-Daltons). You can find convertors online if you wish but kDa is commonly used.



-Kevin

Answer 4

I like the biological aspects, so I would say What it is other types of troponin and how troponin C is diferent from each other the function- Calcium needs to bind to troponin C to initiate muscle contraction in detail How this was discovered (if you can find it. ) what kind of problems it can have if troponin C is defective