novel nucleic acids and corresponding encoded proteins are described . also described are corresponding recombinant vectors and host cells , as well as methods of producing the proteins . also described are mimetics and antibodies to the proteins as well as compositions comprising the nucleic acid or proteins or a portion thereof . methods and kits for the detection of a disease , disorder or abnormal physical state caused by abnormal modulation of calcium levels in a patient are also described . methods for treating a patient having a disease , disorder or abnormal physical state caused by abnormal calcium levels are also described . methods for assaying abnormal calcium levels are also described , as are methods for screening the efficacy of products for modulating abnormal calcium levels .