Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: UNIPROT:P56851 (
epididymal
)
11,273
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
The chromogenic thiol reagent N-(4-aminophenyl)-maleimide (
APM
) was used to provide a sensitive procedure for the determination of protein-bound thiol group, both before and after reduction of disulfide bonds by tri-n-butylphosphine. The bound reagent is diazotized and coupled at low pH to N-(1-naphthyl)ethylenediamine to form an intense magenta label (lambda max 547 nm) with a high molar absorbancy (epsilon 547 = 49,800 cm2/mmol). The validity of absolute quantitation afforded by the method was shown by comparing the results with standard chemical analyses of thiol contents in a model system. Furthermore, the applicability of the procedure to biological objects was shown on isolated
epididymal
bull sperm heads.
...
PMID:Microphotometric analysis of protein-bound thiols and disulfides with an azogenic maleimide. 616 10
