Structure and Classification

FIGURE 19-4 Schematic illustration of the structure and classification of mammalian RGS proteins. All the proteins contain a highly conserved RGS domain that has GAP activity. Most of the proteins contain additional domains that mediate other functions. The figure does not include several other types of homologous proteins, which lack the RGS domain but nevertheless are considered members of the RGS superfamily. 

The large number and diversity of available /3-lactams, mainly penicillins and cephalosporins, necessitate their classification. Penicillins can be classified primarily according to chemical structure. Table 5.2 shows that there is good correspondence between chemical structure and properties. The categorization of cephalosporins into chemically similar groups is not useful because their antimicrobial spectrum is not closely correlated with chemical structure, and classification into generations is based on their spectrum of microbial activity (Table 5.3). 

Selected entries from Methods in Enzymology [vol, page(s)] General Protein kinase classification, 200, 3 protein kinase catalytic domain sequence database identification of conserved features of primary structure and classification of family members,... 

Spooner, D. M., Nunez, J., Trujillo, G., Herrera, M., del, R., Guzman, R, Ghislain, M. (2007). Extensive simple sequence repeat genotyping of potato landraces supports a major reevaluation of their gene pool structure and classification. Proc. Nat. Acad. Sci., 104,19398-19404. 

D. Composition and Structure of Present-Day HDS Catalysts 1. Structure and Classifications of the Co(Ni)-Mo-S Species... 

Hanks SK, Hunter T (1995) Protein kinases 6. The eukaryotic protein kinase superfamily kinase (catalytic) domain structure and classification. FASEB J 9 576-596... 

Know the names, structures, and classification of all amino acids and their side chains present in proteins, and be familiar with their physical and chemical properties, such as conformation, absorption of ultraviolet light, and reactions with ninhydrin. 

Structure and Classification of Alcohols 425 10-3 Nomenclature of Alcohols and Phenols 427 10-4 Physical Properties of Alcohols 430 10-5 Commercially Important Alcohols 433 10-6 Acidity of Alcohols and Phenols 435 10-7 Synthesis of Alcohols Introduction and Review 438 Summary Previous Alcohol Syntheses 438 10-8 Organometallic Reagents for Alcohol Synthesis 440 10-9 Addition of Organometallic Reagents to Carbonyl Compounds 443... 

Figure 10.18 Structure and classification of p-turns. Type IV turns are defined as those having two or more angles which differ by at least 40° from the definitions of p-turn types I, I, If IF, III and III. Type VI p-turns have a cis-Pro at the position i+2. Type VII p-turns form a kink in the protein chain created by fi+1 180° and i+2 <60o or //+/ <60° and tyi+2 ISO °.

Figure 26-13 Structure and classification of glycerol esters (acylglycerols). R, Ka, and R3 are fatty acid(s) of varying chain length.

---