Amino acid sequence of human tumor derived angiogenin.
The amino acid sequence and disulfide bond pairing of human tumor derived angiogenin, the first tumor angiogenesis factor to be isolated in pure form from human sources, have been determined by conventional sequencing techniques adapted and applied to nanomole and subnanomole levels of material. Angiogenin, obtained from conditioned media of a human colonic adenocarcinoma cell line, is a single-chain protein consisting of 123 amino acids with the following sequences: less than Glu1-Asp-Asn-Ser-Arg-Tyr-Thr-His- Phe-Leu-Thr-Gln-His-Tyr-Asp15-Ala-Lys-Pro-Gln-Gly-Arg-Asp-Asp- Arg-Tyr-Cys-Glu-Ser-Ile-Met30- Arg-Arg-Arg-Gly-Leu-Thr-Ser-Pro-Cys-Lys-Asp-Ile-Asn-Thr- Phe45-Ile-His-Gly-Asn-Lys-Arg-Ser -Ile-Lys-Ala-Ile-Cys-Glu-Asn-Lys60-Asn-Gly-Asn-Pro-His-Arg-Glu-Asn -Leu-Arg-Ile -Ser-Lys-Ser-Ser75 -Phe-Gln-Val-Thr-Thr-Cys-Lys-Leu-His-Gly-Gly-Ser-Pro-Trp-Pro90-Pro -Cys-Gln-Tyr -Arg-Ala-Thr-Ala -Gly-Phe-Arg-Asn-Val-Val-Val105-Ala-Cys-Glu-Asn-Gly-Leu-Pro-Val- His-Leu-Asp-Gln-Ser-Ile-Phe120-Arg-Arg-Pro123-OH. Three disulfide bonds link the half-cystinyl residues 26-81, 39-92, and 57-107. The sequence is homologous to that of the pancreatic ribonucleases with 35% identity and many of the remaining residues conservatively replaced. Similarities are especially apparent around the major active-site residues His-12, Lys-41, and His-119 of ribonuclease which are conserved as are three of the four disulfide bonds.(ABSTRACT TRUNCATED AT 250 WORDS)
Strydom
D J
DJ
Fett
J W
JW
Lobb
R R
RR
Alderman
E M
EM
Bethune
J L
JL
Riordan
J F
JF
Vallee
B L
BL
D000230:Adenocarcinoma / Q000032:analysis*; D000595:Amino Acid Sequence; D043925:Angiogenesis Inducing Agents / Q000302:isolation & purification*; D000818:Animals; D002460:Cell Line; D003110:Colonic Neoplasms / Q000032:analysis*; D003488:Cyanogen Bromide; D006133:Growth Substances / Q000302:isolation & purification*; D006736:Horses; D006801:Humans; D019811:Hydroxylamine; D006898:Hydroxylamines; D007202:Indicators and Reagents; D009363:Neoplasm Proteins / Q000302:isolation & purification*; D010446:Peptide Fragments / Q000032:analysis; D011751:Pyroglutamyl-Peptidase I; D012259:Ribonuclease, Pancreatic; D013045:Species Specificity; D014357:Trypsin
D043925:Angiogenesis Inducing Agents; D006133:Growth Substances; D006898:Hydroxylamines; D007202:Indicators and Reagents; D009363:Neoplasm Proteins; D010446:Peptide Fragments; D019811:Hydroxylamine; C046366:angiogenin; D012259:Ribonuclease, Pancreatic; D011751:Pyroglutamyl-Peptidase I; D014357:Trypsin; D003488:Cyanogen Bromide