low-molecular-weight kininogen low-molecular-weight kininogen low-molecular-weight kininogen is a form of kininogen, which has been identified in mice, guinea pigs, and whales. kininogen 1identifierssymbolkng1alt. symbolskng, bdkncbi gene3827hgnc6383omim612358refseqnm_001102416uniprotp01042other datalocuschr. 3 q21-qtersearch forstructuresswiss-modeldomainsinterpro it is also found in humans.