Sequence alignment between 4pv1(D) and UniProt seq P83794 (UCRI_MASLA):

P83794 (UCRI_MASLA): Cytochrome b6-f complex iron-sulfur subunit from Mastigocladus laminosus
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170         
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------
UniProt: MAQFTESMDVPDMGRRQFMNLLAFGTVTGVALGALYPLVKYFIPPSGGAVGGGTTAKDKLGNNVKVSKFLESHNAGDRVLVQGLKGDPTYIVVESKEAIRDYGINAVCTHLGCVVPWNAAENKFKCPCHGSQYDETGKVIRGPAPLSLALCHATVQDDNIVLTPWTETDFRTGEKPWWV
         ..............................................XXXXXXXX......................................XXXXX..................................................................................
PDB seq: --------DVPDMGRRQFMNLLAFGTVTGVALGALYPLVKYFIPPS--------TAKDKLGNNVKVSKFLESHNAGDRVLVQGLKGDPTYIV-----AIRDYGINAVCTHLGCVVPWNAAENKFKCPCHGSQYDETGKVIRGPAPLSLALCHATVQDDNIVLTPWTETDFRTGEKPWWV
                 -+---------+---------+---------+------        -----+---------+---------+---------+--     --+---------+---------+---------+---------+---------+---------+---------+---------
                 10        20        30        40                  60        70        80        90       100       110       120       130       140       150       160       170