Abbreviations and Symbols

Abbreviations and Symbols All contributors to this Series are asked to use the terminology (abbreviations and symbols) recommended by the IUPAC-IUB Commission on Biochemical Nomenclature (CBN) and approved by IUPAC and IUB, and the Editors endeavor to a:;sure conformity. These Recommendations have been published in many journals (I, 2) and compendia (3) and are available in reprint form from the Officeof Biochemical Nomenclature (03N);the are therefore considexed to be generally known. Those used in nucleic acid work, originally set out in section 5 of the fist Recommendations (I) and subsequently revised and expanded (2,3),are given in condensed form in the frontmatter of Volumes 9-33 of this series. A recent expansion of the one-letter system (5) follows.

S I N G L E - L ECODE ~ R RECOMMENDNICINS. (5) Symbol

Meaning

Origin of symbol

G A T(U) C

G A T(U) C

Guanosine Adenosine (ribo)Thymidine (Uridine) Cytidine

R

G or A T(U) or C A or C G or T(U) G or C A or T(U)

puRine pyrimidine aMino Keto Strong interaction (3 H-bonds) Weak interaction (2 H-bonds)

Y

M K S Wb

not G, H follows G in the alphabet not A; B fol'iows A not T (not U); V follows U not C; D follows C

C or T(U)

H B V

A or G or G or G or

N

G or A or T(U) or C

aNy nucleoside (is., unspecified)

Q

Q

Queuosine (nucleoside of queuine)

D’

T O or C

C or A A or T(U)

&.

"Modified from Natl. Actid. Scj. U A . 83 4 (1986). 'W has been used for wyosine, the nucleoside 01.' "base Y" (wye). 'D has been used for dihydrouridme fiU or H2 Urd).

Enzymes In naming enzymes, the 1984 recommendations of the IUB Commission on Biochemical Nomenclature (4) are followed as far as possible. At fiit mention, each enzyme is described either by its systematic name or by the equation for the reaction catalyzed or by the recommended trivial name, followed by its EC number in parentheses. Thereafter, a trivial name may be used. Enzyme names are not to be abbreviatedexcept when the substrate has an approved abbreviation (e.g., ATPase, but not LDH, is acceptable).

xi

ABBREVIATIONS AND SYMBOLS

xii REFERENCES

1. JBC241,527 (1966); a h e m 5, 1445 (1966); u101. 1 (1966); ABB 115, 1 (1%6), 129, 1 (1969); and elsewhere$ General. 2. EJB 15, 203 (1970); JBC 245, 5171 (1970); JMB 55, 299 (1971); and elsewherat 3. “Handbook of Biochemistry” (0. Fasman, ed.), 3rd ed. Chemical Rubber Co., Cleveland, Ohio,1970, 1975, Nucleic Acids, Vols. I and 11, pp. 3-59. Nucleic acids. 4. “Enzyme Nomenclature? [Recommendations(1984) of the Nomenclature Committee of the IUB]. Academic Press, New York, 1984. 5. EIB 150, 1 (1985). Nucleic Acids (One-letter system).? Abbreviations of Journal Titles

Journals

Annu. Rev. Biochem. Annu. Rev. Genet. Arch. Biochem. Biophys. Biochem. Biophys. Res. Commun. Biochemistry Biochem. J. Biochim. Biophys. Acta Cold Spring Harbor Cold Spring Harbor Lab Cold Spring Harbor Symp. Quant. Biol. Eur. J. Biochem. Fed. Proc Hoppe-Seyler’s 2. Physiol. Chem. J. Amer. Chem. Soc J. Bacteriol. J. Biol. Chem. J. Chem. Soc. J. Mol.Biol. J. Nat. Cancer Inst. Mol. Cell. Biol. Mol. Cell. Biochem. Mol. Gen. Genet. Nature, New Biology Nucleic Acid Research Proc. Natl. h a d . Sci. U.S.A. Proc. SOL Exp. Biol. Med. Progr. Nucl. Acid. Res. Mol. Biol.

Abbreviations used ARB ARGen ABB BBRC Bchem BJ BBA CSH CSHLab CSHSQB EJB FP ZpChem JACS J. Bact. JBC JCS JMB JNCI MCBiol MCBchem MGG Nature NB NARes PNAS PSEBM This Series

?Reprints available from the Office of Biochemical Nomenclature (W. E. Cohn, Director).