340kDa
340 kDa refers to a molecular weight expressed in kilodaltons, where 1 kilodalton (kDa) equals 1000 daltons (Da) and 1 Da is defined as one gram per mole. In biology, molecular weight is used to describe the size of macromolecules such as proteins, nucleic acids, and protein complexes. The designation 340 kDa is not a fixed identity of a molecule; it simply says that the molecule’s mass is approximately 340,000 g/mol.
Molecular weight can be measured or estimated by several methods. Analytical techniques such as mass spectrometry
For a protein, 340 kDa roughly corresponds to about 3,000 amino acids if a polypeptide carried a
See also: kilodalton, molecular weight, mass spectrometry, size-exclusion chromatography.