The MicCnon-coding RNA (previously known as IS063 ) is located between the ompN and ydbKgenes in E. coli. This Hfq-associated RNA is thought to be a regulator of the expression level of the OmpC porin protein, with a 5' region of 22 nucleotides potentially forming an antisense interaction with the ompCmRNA. Along with MicF RNA this family may act in conjunction with EnvZ-OmpR two-component system to control the OmpF/OmpC protein ratio in response to a variety of environmental stimuli. The expression of micC was shown to be increased in the presence of beta-lactam antibiotics.
^Chen S, Lesnik EA, Hall TA, Sampath R, Griffey RH, Ecker DJ, Blyn LB (2002). "A bioinformatics based approach to discover small RNA genes in the Escherichia coli genome". Bio Systems. 65 (2–3): 157–77. doi:10.1016/S0303-2647(02)00013-8. PMID12069726.