Purification and properties of staphylocoagulase

Area of Science:

• Microbiology
• Protein Chemistry

Background:

• Staphylocoagulase is a key exoprotein produced by coagulase-positive Staphylococci.
• Understanding its biochemical properties is crucial for diagnostic and research applications.

Purpose of the Study:

• To purify and biochemically characterize staphylocoagulase.
• To determine key physical and chemical properties of the purified protein.

Main Methods:

• Protein purification techniques to achieve high purity.
• N-terminal amino acid sequencing.
• Determination of molecular weight and isoelectric point.
• Amino acid composition analysis.

Main Results:

• Staphylocoagulase was purified to near homogeneity.
• Aspartic acid was identified as the sole N-terminal amino acid.
• The molecular weight was determined to be 61,000 Da.
• The isoelectric point was found to be pH 4.53.
• The complete amino acid composition was elucidated.

Conclusions:

• The study provides a detailed biochemical profile of purified staphylocoagulase.
• These characterization data are fundamental for further studies on staphylocoagulase function and interactions.