Medical Definition of Sedimentation constant

1. The constant s in Svedberg's equation for estimating the molecular weight of a protein from the rate of movement in a centrifugal field:where M is the molecular weight, R the gas constant, T the absolute temperature, D the diffusion constant (in square centimeters per second), V the partial specific volume of the protein, ρ the density of the solvent. The constant s, with dimensions of time per unit of field force (s = drb/dt /ω2ro where rb is the position at time t, r0 is the position at time 0, and ω is the angular velocity) is usually between 1 × 10-13 and 200 × 10-13 second. The Svedberg unit (S) is arbitrarily set at 1 × 10-13 second and is very often used to describe the sedimentation rate of macromolecules; e.g., 4 S RNA. Synonym: sedimentation coefficient. (05 Mar 2000)

Lexicographical Neighbors of Sedimentation Constant

sedilia
sedilium
sediment
sediment
sedimentable
sedimentary
sedimentary
sedimentary cataract
sedimentary clay
sedimentary rock
sedimentate
sedimentation
sedimentation
sedimentations
sedimentation coefficient
sedimentation constant (current term)
sedimentation rate
sedimentation rate
sedimentation velocity
sedimentator
sedimented
sedimenting
sedimentologic
sedimentologies
sedimentologist
sedimentology
sedimentometer
sediments
sedimentum
sedimentum lateritium

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