4-Phenylbutyric Acid Reduces Endoplasmic Reticulum Stress in Chondrocytes That Is Caused by Loss of the Protein Disulfide Isomerase ERp57

Table 1

PCR primer sequences and PCR conditions.

Primer	Sequence (5>3)	Annealing temperature	Number of cycles
ERp57 forward; ERp57 reverse	AGAGACTTGCACCTGAGTAT; GCAGTCCTAGGTCCATCATA	52°C	28
XBP1s forward; XBP1s reverse	GAGTCCGCAGCAGGTG; CCGCCAGAATCCATGGGG	52°C	30
GAPDH forward; GAPDH reverse	GAAGGTGAAGGTCGGAGTCAAC; CAGAGTTAAAAGCAGCCCTGGT	55°C	25
BiP forward; BiP reverse	GGGGACCACCTACTCCTGCGTC; ATAGGACGGCGTGATGCGGT	58°C	25
Chop forward; Chop reverse	TGTTAAAGATGAGCGGGTGGCA; TGCTTTGGTGCTGCTTTCAGGTGT	58°C	25
ATF6 forward; ATF6 reverse	TTATCAGTTTACAACCTGCA; CTAGGGACTTTAAGCCTCTG	50°C	30