Cloning and sequence analysis of cDNA for Trimeresurus flavoviridis phospholipase A2, and consequent revision of the amino acid sequence

Naoko Oda, Tomohisa Ogawa, Motonori Ohno, Hiroyuki Sasaki, Yoshiyuki Sakaki, Hiroshi Kihara

Research output: Contribution to journalArticle

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Abstract

A cDNA clone of Trimeresurus flavoviridis phospholipase A2 was isolated from the venom gland cDNA library using DNA amplified by polymerase chain reaction with oligonu-cleotide primers corresponding to the N- and C-terminal sequences of this enzyme. The amino acid sequence deduced from the cDNA nucleotide sequence determined by the dideoxy termination method was found to be inconsistent in the segment comprising the 69th to 81st positions from that reported previously [Tanaka, S. et al. (1986) J. Biochem. 99, 281-289]. Reinvestigation of the amino acid sequence of the peptide covering the sequence in question showed that the amino acid sequence predicted from the nucleotide sequence is correct. The sequence contains Asn-Asn-Gly (positions 69-71) and it was found that the Asn-Gly bond easily undergoes α-β transpeptidation when digested with Achromobacter protease I at pH 9.0 but not seriously at pH 6.8. It is likely that the transpeptidation reaction caused a failure in the previous sequence determination. The cDNA clone obtained was 597 base pairs long and contained an open reading frame of 414 base pairs coding for 138 amino acid residues. A typical signal peptide sequence (16 amino acid residues long), located at the N-terminal moiety of the deduced sequence, was immediately followed by a polypeptide which corresponds to the mature enzyme. Northern blot analysis showed a single transcript only in the poly(A)+ RNA fraction of the venom gland but not in those of many other organs tested.

Original languageEnglish
Pages (from-to)816-821
Number of pages6
JournalJournal of Biochemistry
Volume108
Issue number5
DOIs
Publication statusPublished - Jan 1 1990

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Trimeresurus
Cloning
Phospholipases A2
Sequence Analysis
Organism Cloning
Amino Acid Sequence
Complementary DNA
lysyl endopeptidase
Venoms
Amino Acids
Base Pairing
Clone Cells
Peptides
DNA-Directed DNA Polymerase
Enzymes
Protein Sorting Signals
Gene Library
Northern Blotting
Nucleotides
Open Reading Frames

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology

Cite this

Cloning and sequence analysis of cDNA for Trimeresurus flavoviridis phospholipase A2, and consequent revision of the amino acid sequence. / Oda, Naoko; Ogawa, Tomohisa; Ohno, Motonori; Sasaki, Hiroyuki; Sakaki, Yoshiyuki; Kihara, Hiroshi.

In: Journal of Biochemistry, Vol. 108, No. 5, 01.01.1990, p. 816-821.

Research output: Contribution to journalArticle

Oda, Naoko ; Ogawa, Tomohisa ; Ohno, Motonori ; Sasaki, Hiroyuki ; Sakaki, Yoshiyuki ; Kihara, Hiroshi. / Cloning and sequence analysis of cDNA for Trimeresurus flavoviridis phospholipase A2, and consequent revision of the amino acid sequence. In: Journal of Biochemistry. 1990 ; Vol. 108, No. 5. pp. 816-821.
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