The phrase "a primary precursor for" is correct and usable in written English.
It can be used when discussing something that serves as an important or main source or origin for another thing.
Example: "Vitamin D is a primary precursor for calcium absorption in the body."
Alternatives: "a key contributor to" or "a main source of".
Ornithine or arginine acts as a primary precursor for putrescine in polyamine biosynthesis through ornithine decarboxylase (ODC; EC 4.1.1.17) or arginine decarboxylase (ADC; EC 4.1.1.9), agmatine iminohydrolase (AIH; EC 3.5.3.12), and N-carbamoylputrescine amidohydrolase (CPA; EC 3.5.1.53), respectively, with special reference to plants [ 10].
Since the OAT and Pox genes are both involved in proline metabolism, P5CS was also included in the selected genes as it catalyzes the synthesis of a primary precursor for proline biosynthesis in plants and also showed a trend (P = 0.056) of increased expression with culm maturity.
Researchers are increasingly recognizing emotional dependency as a primary precursor of violence within relationships [ 1].
Loss of a job was a primary precursor to a spell of $2-a-day 2-a-day.
Both genes carry an intron and are part of a primary precursor encompassing seven and four genes, respectively.
Citrate that is extruded from mitochondria is the primary precursor for the endogenous synthesis of fatty acids, cholesterol, isoprenoid, as well as acetylation reactions that modify proteins.
Ornithine is the primary precursor for the synthesis of the polyamines putrescine, spermidine, and spermine (69).
The primary precursors for the isoprenoid side chain are dimethylallyl diphosphate and isopentenyl diphosphate.
Here we present potential primary precursors for osa-miR1425, osa-miR1428e, osandiR2055 osa-miR159a.2 osa-miR159a.2respond to long cDNAs reported by the Rice Full length cDNA Consortium [ 18].
Barrett's esophagus (BE) is the primary precursor lesion for EAC, and thus the non-endoscopic molecular diagnosis of BE can be an important approach to improve EAC outcomes if robust biomarkers for timely diagnosis are identified.
