Usage:

  api_get_sequence.php?option1=value1&option2=value2&...

Options:

  name            value                              output                         default
-----------------------------------------------------------------------------------------------
  help                                            -This page
  VDB            PDB ID                           -Selects a DB entry                2bbv
  chain          1 Uppercase letter               -Selects a specific chain           A
  columns        INT > 0                          -Number of columns in FASTA file    60
  format         fas,csv,xml,html                 -Output formated accordingly        fas

Examples:

  api_get_sequence.php

  api_get_sequence.php?VDB=1a34&chain=B&columns=80

  api_get_sequence.php?columns=40