3H3G, 1BZG, 1M5N, 3FFD574419227ENSG00000087494ENSMUSG00000048776P12272P22858NM_002820NM_198964NM_198965NM_198966NM_008970NP_002811NP_945315NP_945316NP_945317n/aParathyroid hormone-related protein (or PTHrP) is a protein member of the parathyroid hormone family. It is occasionally secreted by cancer cells (breast cancer, certain types of lung cancer including squamous cell lung carcinoma). However, it also has normal functions.1bzg: THE SOLUTION STRUCTURE OF HUMAN PARATHYROID HORMONE-RELATED PROTEIN (1-34) IN NEAR-PHYSIOLOGICAL SOLUTION, NMR, 30 STRUCTURES1m5n: Crystal structure of HEAT repeats (1-11) of importin b bound to the non-classical NLS(67-94) of PTHrP Parathyroid hormone-related protein (or PTHrP) is a protein member of the parathyroid hormone family. It is occasionally secreted by cancer cells (breast cancer, certain types of lung cancer including squamous cell lung carcinoma). However, it also has normal functions. PTHrP acts as an endocrine, autocrine, paracrine, and intracrine hormone. It regulates endochondral bone development by maintaining the endochondral growth plate at a constant width. It also regulates epithelial-mesenchymal interactions during the formation of the mammary glands.