Sequence alignment between 4f9p(D) and UniProt seq :

UniProt: 
PDB seq: QVQLQQSGAEVVRPGTSVKVSCKASGYAFTSYLIHWIKQRPGQGLEWIGVINPRSGDSHYNEKFKDRTTLTADQSSSTAYMQLSSLTSDDSAVYFCARSDYGAYWGQGTLVTVSAGSDIVLTQSPVTLSVTPGDSVSLSCRASQSISNNLHWYRQKSHESPRLLIKYASQSIFGIPSRFSGSGSGTEFTLSINSVETEDFGIYFCQQSNSWPHTFGTGTKLELK
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+----------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
                 10        20        30        40        50        60        70        80        90       100       110        140       150       160       170       180       190       200       210       220       230       240