Chains and heterogens:
PDB Chain Sequences:
>1fnvA (A:) qqdpdpsqlhrsslvknlqniyflyegdpvthenvksvdqllshdliynvsgpnydklkt elknqematlfkdknvdiygveyyhlcylcenaersaciyggvtnhegnhleipkkivvk vsidgiqslsfdietnkkmvtaqeldykvrkytidnkqlytngpskyetgyikfipknke sfwfdffpepeftqskylmiykdnetldnktsqievylttk
>1fnvB (B:) qqdpdpsqlhrsslvknlqniyflyegdpvthenvksvdqllshdliynvsgpnydklkt elknqematlfkdknvdiygveyyhlcylcenaersaciyggvtnhegnhleipkkivvk vsidgiqslsfdietnkkmvtaqeldykvrkytidnkqlytngpskyetgyikfipknke sfwfdffpepeftqskylmiykdnetldnktsqievylttk
>1fnvC (C:) qqdpdpsqlhrsslvknlqniyflyegdpvthenvksvdqllshdliynvsgpnydklkt elknqematlfkdknvdiygveyyhlcylcenaersaciyggvtnhegnhleipkkivvk vsidgiqslsfdietnkkmvtaqeldykvrkytidnkqlytngpskyetgyikfipknke sfwfdffpepeftqskylmiykdnetldnktsqievylttk
>1fnvD (D:) qqdpdpsqlhrsslvknlqniyflyegdpvthenvksvdqllshdliynvsgpnydklkt elknqematlfkdknvdiygveyyhlcylcenaersaciyggvtnhegnhleipkkivvk vsidgiqslsfdietnkkmvtaqeldykvrkytidnkqlytngpskyetgyikfipknke sfwfdffpepeftqskylmiykdnetldnktsqievylttk