>9gv3_H mol:protein length:143 Nb474 mutant R53A,D125AQVQLQESGGGLVQPGGSLRLSCAASETALTYYAIGWFRQAPGKEREGVSCISAINSGSGARTDYADSVKGRFTISRDDAKNTVTLQMNSLEPEDTARYYCALDTTDRYDSANGRYYCTISSDTYAYWGQGTQVTVSSHHHHHH