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Gene Review

p65  -  surface lipoprotein

Mycoplasma hyopneumoniae 232

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Disease relevance of p65

  • In the current study, polyclonal mouse antibody (PAb) to gel-purified p65 was used to identify recombinant phage plaques expressing p65-related epitopes [1].
  • However, antibody eluted from recombinant phage plaques bound only to the largest truncated polypeptide, suggesting that a recombinant product corresponding to the C-terminal region of p65 was expressed in Escherichia coli [1].
  • The genome of Mycoplasma hyopneumoniae encodes several immunodominant proteins, including a cytosolic protein (p36), three membranous proteins (p46, p65, and p74), and an adhesin (p97) [2].

High impact information on p65

  • Examination of the kinetic parameters of recombinant GST-p65 for the hydrolysis of pNPC and pNPP indicated a preference for the shorter fatty acid chain of pNPC [3].
  • Analysis of the translated amino acid sequence of the gene encoding p65 revealed similarity to the GDSL family of lipolytic enzymes [3].
  • To examine the lipolytic activity of p65, the gene was cloned and expressed in Escherichia coli after truncation of the prokaryotic lipoprotein signal sequence and mutagenesis of the mycoplasma TGA tryptophan codons [3].
  • The esterase activity of recombinant GST-p65 was indicated by the formation of a cleared zone on tributyrin agar plates and the hydrolysis of p-nitrophenyl esters of caproate (pNPC) and p-nitrophenyl esters of palmitate (pNPP) [3].
  • Triton X-114 detergent phase fractionation of whole organisms clearly distinguished p65, p50 and p44 as hydrophobic integral membrane proteins, whereas p41 was identified as a hydrophilic surface protein apparently extrinsic to the membrane [4].

Analytical, diagnostic and therapeutic context of p65

  • After treatment with thrombin, the recombinant glutathione S-transferase (GST)-p65 protein yielded a 66-kDa fusion protein cleavage product corresponding in size to the mature p65 protein [3].


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