The function of CACNB2 (calcium voltage-gated channel auxiliary subunit beta 2, ENSG00000165995) is as follows. Beta subunit of voltage-dependent calcium channels which contributes to the function of the calcium channel by increasing peak calcium current (By similarity). Plays a role in shifting voltage dependencies of activation and inactivation of the channel (By similarity). May modulate G protein inhibition (By similarity). May contribute to beta-adrenergic augmentation of Ca(2+) influx in cardiomyocytes, thereby regulating increases in heart rate and contractile force (PubMed:36424916). Involved in membrane targeting of the alpha-1 subunit CACNA1C (PubMed:17525370). {ECO:0000250|UniProtKB:Q8CC27, ECO:0000250|UniProtKB:Q8VGC3, ECO:0000269|PubMed:17525370, ECO:0000269|PubMed:36424916}.