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Table 1.

A Sample of Some Proteins Encoded by smORFS

YPD name[i]	CAI[ii]	Length[iii]	Encoded[iv]	Function[v]
AGA2	0.088	88	N	A-agglutinin binding subunit
ATP15	0.167	63	M	F1–ATP synthase epsilon subunit
ATP8	0.226	48	M	F0–ATP synthase subunit 8
COX7	0.204	61	M	cytochrome c oxidase subunit VII
COX8	0.224	79	M	cytochrome c oxidase subunit VIII
COX9	0.264	60	M	cytochrome c oxidase chain VIIA
CRS5	0.233	70	N	metallothionein-like protein
CUP1A	0.226	62	N	metallothionein, copper chelatin
CUP1B	0.226	62	N	metallothionein, copper chelatin
CWP2	0.747	93	N	Cell wall mannoprotein
DDR2	0.297	62	N	stress protein
HOR7	0.365	60	N	hyperosmolarity responsive
INH1	0.130	86	M	mitochondrial ATPase inhibitor
MFA1	0.556	37	N	Mating pheromone a-factor
MFA2	0.271	39	N	Mating pheromone a-factor
OST4	0.461	37	N	oligosaccharyltransferase subunit
PMP1	0.672	41	N	plasma membrane proteolipid
PMP2	N.D.	44	N	plasma membrane proteolipid
RPL47A	0.417	26	N	ribosomal protein
RPL47B	0.438	26	N	ribosomal protein
SAE3	0.107	51	N	meiotic recombination pathway
SCH1	0.188	55	N	similar to protein kinase A inhibitor
STF1	0.171	86	M	ATPase stabilizing factor
TOM6	0.300	62	M	mitochondrial integral outer membrane
TOM7	0.222	61	M	subunit of mitochondrial protein translocase
YAR020C	0.482	56	N	similar to PAU3
YS29A	0.652	57	N	ribosomal protein
YS29B	0.760	57	N	ribosomal protein
YSY6	0.160	66	N	secretory pathway
ACB1	0.360	88	N	acyl-coenzyme A-binding protein
ATP9	N.D.	76	M	F0–ATP synthase subunit 9
ATX1	0.169	74	N	metal homeostasis and antioxidant

[i] (YPD) Yeast Protein Database (http://www.proteome.com/search1/html), searched using category 10 of molecular mass ⩽7.5 kD.

[ii] (CAI) Codon adaptation index, as indicated in YPD. (N.D.) Not determined.

[iii] Length of the primary translation product from S. cerevisiae Genome Database (http://genome-www.stanford.edu/Saccharomyces/).

[iv] (M) Mitochondrially encoded; (N) nuclear encoded.

[v] Function of the protein according to YPD and SGD.