Serine-rich single pass membrane protein 1 is a protein that in humans is encoded by the SSMEM1 gene.[1]
The gene and intron-exon structure were first predicted through analysis of the complete sequence of human chromosome 7, its initial designation being C7orf45.[2] [3] Human mRNA transcripts were identified through two large scale cDNA cloning efforts, an American effort run out of the Dana-Farber Cancer Institute and Harvard Medical School, and full-length long Japan effort. Later assigned the official symbol SSMEM1, the gene is located on the long arm of chromosome 7 (7q32.2) on the sense strand in humans.[4] The human mRNA transcript is 1171 bp long with three exons.[5]
In humans, SSMEM1 is also referred to as C7orf45. Human SSMEM1 has a clone name of FLJ40316.
In humans, SSMEM1 is highly expressed in the testes.[6] [7] [8] In mice, SSMEM1 is expressed in the brain.[9]
In humans, serine-rich single pass membrane protein 1 is 244 amino acids long with a transmembrane domain region spanning amino acids 35-55. This protein has a domain of unknown function (DUF4636) that spans almost all of the protein (amino acids 1-243). DUF4636 belongs to pfam15468 which is a part of the superfamily cl21285 that is found in eukaryotes and typically 196 to 244 amino acids long. The human protein has a molecular weight of 28036 Da and an isoelectric point of 7.64.[10]