In quinoa, class-1 HKT proteins load this element into bladder cells. Variations in hydrogen concentration in the brain cause acid-sensing pH sensor proteins (-5[1])to mainly transport this element. Paralytic shellfish poisoning occurs when alkaloids like saxitoxin block the transport (10[1])of this element. (10[2]-5[5])A symporter (-5[2])of glucose (10[2])and this (10[1])element (10[5]-5[1])called (10[4])SGLT2 (10[5]-5[1])is found in (10[2])proximal tubules. (10[2])Subunits of proteins (10[1])that conduct this element (-5[1])contain six transmembrane passes and are voltage-gated. (10[2]-5[2])An (-5[1])ion of this (-5[1])element (10[1]-5[1])enters neurons (10[1]-5[1])during (10[1])action (10[4]-5[2])potential (10[4]-5[3])firing. (10[5]-5[11])Blockers (10[3]-5[1])for this element’s channels can (-5[1])be (10[1])used to treat (10[1])arrhythmia. Hydrolysis (-5[1])of ATP pumps three atoms of this element (-5[1])out of cells (10[1])against (-5[1])potassium. (10[8]-5[3])For (10[1])10 (10[1])points, (10[3])name (10[1])this element (10[2])found alongside (10[2])chloride (10[1])in table (10[1])salt. (10[1])■END■ (10[29]0[1])