In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Input: Consider Input:  Analysis of the 5 ' and 3 ' termini of the transcripts produced in vivo from the puf operon of R . sphaeroides PUF delta 348 - 420 ( three transcripts ; 0 . 59 , 0 . 64 , and 2 . 63 kilobases ) lacking the puf - intercistronic terminator structure were identical to those of the corresponding puf transcripts derived from wild - type R . sphaeroides 2 . 4 . 1 ( four transcripts ; 0 . 50 , 0 . 66 , 0 . 71 , and 2 . 7 kilobases ) showing that the transcripts begin and end at the same sites .

Output: puf transcripts


Input: Consider Input:  A GT - rich sequence binding the transcription factor Sp1 is crucial for high expression of the human type VII collagen gene ( COL7A1 ) in fibroblasts and keratinocytes .

Output: transcription factor Sp1


Input: Consider Input:  SF1 / mBBP utilizes a " maxi - K homology " ( maxi - KH ) domain for recognition of the single - stranded BPS and requires a cooperative interaction with splicing factor U2AF65 bound to an adjacent polypyrimidine tract ( PPT ) for high - affinity binding .


Output: maxi - KH