Chains and heterogens:
PDB Chain Sequences:
>4nv7A (A:) mgsshhhhhhssglvprgshmasntggqqmgrgsmndappfdldaylarigytgprnasl dtlkalhfahpqaipwenidpflgrpvrldlaalqdkivlggrggycfehnllfmhalka lgfevgglaarvlwgqsedaitarshmllrveldgrtyiadvgfggltltaplllepgre qktphepfriveaddhfrlqaaiggdwrslyrfdlqpqyevdysvtnyflstsptshfls sviaaraapdrryalrgnrlsihhlggrteqteiataadladtlqgllgiiipdrtafea kvretkivetna
>4nv7A (A:) ppfdldaylarigytgprnasldtlkalhfahpqaipwenidpflgrpvrldlaalqdki vlggrggycfehnllfmhalkalgfevgglaarvlwgqdaitarshmllrveldgrtyia dvgfggltltaplllepgreqktphepfriveaddhfrlqaaiggdwrslyrfdlqpqye vdysvtnyflstsptshflssviaaraapdrryalrgnrlsihhlggrteqteiataadl adtlqgllgiiipdrtafeakvretkiv
>4nv7B (B:) mgsshhhhhhssglvprgshmasntggqqmgrgsmndappfdldaylarigytgprnasl dtlkalhfahpqaipwenidpflgrpvrldlaalqdkivlggrggycfehnllfmhalka lgfevgglaarvlwgqsedaitarshmllrveldgrtyiadvgfggltltaplllepgre qktphepfriveaddhfrlqaaiggdwrslyrfdlqpqyevdysvtnyflstsptshfls sviaaraapdrryalrgnrlsihhlggrteqteiataadladtlqgllgiiipdrtafea kvretkivetna
>4nv7B (B:) ppfdldaylarigytgprnasldtlkalhfahpqaipwenidpflgrpvrldlaalqdki vlggrggycfehnllfmhalkalgfevgglaarvlwgqsedaitarshmllrveldgrty iadvgfggltltaplllepgreqktphepfriveaddhfrlqaaiggdwrslyrfdlqpq yevdysvtnyflstsptshflssviaaraapdrryalrgnrlsihhlggrteqteiataa dladtlqgllgiiipdrtafeakvretkiv