text: user1852: I was trying to use UCSC liftover tool to convert human coordinates to mouse. While most of the files worked, one file didn't:
  chr16   86430087    86430726    Human_chr16:86430087-86430726___element_1___positive____neural_tube[12/12]___hindbrain_(rhombencephalon)[12/12]___limb[3/12]___cranial_nerve[8/12]
  chr16   85620095    85621736    Human_chr16:85620095-85621736___element_2___negative_
  chr16   80423343    80424652    Human_chr16:80423343-80424652___element_3___negative_
  chr16   80372593    80373755    Human_chr16:80372593-80373755___element_4___positive____neural_tube[6/10]___hindbrain_(rhombencephalon)[10/10]___midbrain_(mesencephalon)[10/10]
  
  Does anyone know why this bed file can only be converted to chr:start-end format but not bed4 format?
  
  user1852: I figured out the issue by myself. It turned out that UCSC liftover doesn't like the character ":"
  I removed ":" and it worked
  
original_text: 1852: <p>I was trying to use <a href="https://genome.ucsc.edu/cgi-bin/hgLiftOver" rel="nofollow noreferrer">UCSC liftover tool</a> to convert human coordinates to mouse. While most of the files worked, one file didn't:</p>
  
  <pre><code>chr16   86430087    86430726    Human_chr16:86430087-86430726___element_1___positive____neural_tube[12/12]___hindbrain_(rhombencephalon)[12/12]___limb[3/12]___cranial_nerve[8/12]
  chr16   85620095    85621736    Human_chr16:85620095-85621736___element_2___negative_
  chr16   80423343    80424652    Human_chr16:80423343-80424652___element_3___negative_
  chr16   80372593    80373755    Human_chr16:80372593-80373755___element_4___positive____neural_tube[6/10]___hindbrain_(rhombencephalon)[10/10]___midbrain_(mesencephalon)[10/10]
  </code></pre>
  
  <p>Does anyone know why this bed file can only be converted to chr:start-end format but not bed4 format?</p>
   1852: <p>I figured out the issue by myself. It turned out that UCSC liftover doesn't like the character ":"</p>
  
  <p>I removed ":" and it worked</p>
  