description
Phase 2 of the cardiac action potential is the plateau phase which is sustained by a balance of Ca2+ influx through L-type Ca2+ channels (LTCCs) and K+ efflux through the slow delayed rectifier K+ channel 1 (KCNQ1). This phase sustains muscle contraction (Park & Fishman 2011, Grant 2009)

external resources
NCBI:1339119
REACTOME:R-HSA-5576893
PUBMED:21357845
PUBMED:19808464

genes
CACNA1C , CACNA1D , CACNA1F , CACNA1S , CACNA2D1 , CACNB1 , CACNB2 , CACNB3 , CACNB4 , CACNG1 , KCNE1 , KCNQ1 , CACNA2D2 , KCNE2 , KCNE3 , AKAP9 , CACNG3 , CACNG2 , KCNE5 , KCNE4 , CACNG5 , CACNG4 , CACNA2D3 , CACNG8 , CACNG7 , CACNG6 , CACNA2D4 , MIR935 ,