This broadly titled research project represents a continuing effort to understand and correlate structure and biological function of proteins and glycoproteins. For the current 5-year period, of which the last 21 months are covered by this application, a central focus of the project has been derived from the recent definition of the many posttranslational modifications of protein, through which the 20 genetically coded primary amino acids give rise to the many hundred different derivatized amino acids actually found in proteins.
Specific aims for the current period have consequently been to elucidate the biological roles of posttranslational modificaions, concentrating on the following questions and systems: I. The biological roles of the glycosyl moieties in glycoproteins based on the fundamental hypothesis that there exists a universal """"""""language"""""""" of cell-cell and cell-molecule communication based on specific lectin-oligosaccharide interactions; II. The specificity determinants in in vivo modification of specific proteins (N-terminal modification of pancreatic Alpha-amylase and muscle enolase, and Eplison(Gamma-glutamyl)-lysine cross-link formation catalyzed by transglutaminase); III. The relation of primary structure to subunit interaction, metal binding and active site structure and specificity determinants for the various processing enzymes involved in posttranslational modificaion. The problems will be tackled primarily by establilshed methods, some of which have been developed in the past through work supported by this grant, but the exploration of new methodology will continue to be a significant component of this project. I also intent to continue to explore the direct application of new knowledge in the 3 proposed problem areas to such important practical problems as enzyme stabilization and protection for enzyme replacement therapy and the role of lectin-saccharide interactions in host-parasite or host-symbiote interactions in normal and pathological conditions.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
5R01GM031305-05
Application #
3279267
Study Section
Biochemistry Study Section (BIO)
Project Start
1982-03-01
Project End
1987-06-30
Budget Start
1986-07-01
Budget End
1987-06-30
Support Year
5
Fiscal Year
1986
Total Cost
Indirect Cost
Name
University of Texas Health Science Center Houston
Department
Type
Schools of Medicine
DUNS #
City
Houston
State
TX
Country
United States
Zip Code
77225
Shao, M C; Wold, F (1995) The effect of the protein matrix proximity on glycan reactivity in a glycoprotein model. Eur J Biochem 228:79-85
Krishna, R G; Chin, C C; Weldon, P J et al. (1995) Characterization of gamma-glutamyl transpeptidase from the Rathke's gland secretions of Kemp's ridley sea turtles (Lepidochelys kempi). Comp Biochem Physiol B Biochem Mol Biol 111:257-64
Sokolik, C W; Liang, T C; Wold, F (1994) Studies on the specificity of acetylaminoacyl-peptide hydrolase. Protein Sci 3:126-31
Shao, M C; Sokolik, C W; Wold, F (1994) Specificity studies of the GDP-[L]-fucose: 2-acetamido-2-deoxy-beta-[D]-glucoside (Fuc-->Asn-linked GlcNAc) 6-alpha-[L]-fucosyltransferase from rat-liver Golgi membranes. Carbohydr Res 251:163-73
Krishna, R G; Wold, F (1993) Post-translational modification of proteins. Adv Enzymol Relat Areas Mol Biol 67:265-98
Lu, Y; Ye, J; Wold, F (1993) Isolation of oligomannose-type glycans from bean glycoproteins. Anal Biochem 209:79-84
Chin, C C; Wold, F (1993) The use of tributylphosphine and 4-(aminosulfonyl)-7-fluoro-2,1,3-benzoxadiazole in the study of protein sulfhydryls and disulfides. Anal Biochem 214:128-34
Shao, M C; Chin, C C (1992) Method for the detection of glycopeptides at the picomole level in HPLC peptide maps. Anal Biochem 207:100-5
Krishna, R G; Wold, F (1992) Specificity determinants of acylaminoacyl-peptide hydrolase. Protein Sci 1:582-9
Krishna, R G; Chin, C C; Wold, F (1991) N-terminal sequence analysis of N alpha-acetylated proteins after unblocking with N-acylaminoacyl-peptide hydrolase. Anal Biochem 199:45-50

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