A novel mouse gene full-length cDNA sequence-SRG2 were identified (GenBank accession number AF395083), which was significantly changed in cryptorchidism, from a mouse testis cDNA library using a cDNA fragment (GenBank accession number BE644542) as an electronic probe. SRG2 was 1058 bp in length. The putative protein encoded by this gene was 295 amino acids with a theoretical molecular weight of 33 579 and isoelectric point of 9.64. The sequence shared no significant homology with any known protein in databases except TSARG2, with which its homology was 78%. RT-PCR showed that SRG2 was expressed significantly in testis.
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