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J Biol Chem
2008 Jun 13;28324:16928-39. doi: 10.1074/jbc.M801454200.
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PATE gene clusters code for multiple, secreted TFP/Ly-6/uPAR proteins that are expressed in reproductive and neuron-rich tissues and possess neuromodulatory activity.
Levitin F
,
Weiss M
,
Hahn Y
,
Stern O
,
Papke RL
,
Matusik R
,
Nandana SR
,
Ziv R
,
Pichinuk E
,
Salame S
,
Bera T
,
Vincent J
,
Lee B
,
Pastan I
,
Wreschner DH
.
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We report here syntenic loci in humans and mice incorporating gene clusters coding for secreted proteins each comprising 10 cysteine residues. These conform to three-fingered protein/Ly-6/urokinase-type plasminogen activator receptor (uPAR) domains that shape three-fingered proteins (TFPs). The founding gene is PATE, expressed primarily in prostate and less in testis. We have identified additional human PATE-like genes (PATE-M, PATE-DJ, and PATE-B) that co-localize with the PATE locus, code for novel secreted PATE-like proteins, and show selective expression in prostate and/or testis. Anti-PATE-B-specific antibodies demonstrated the presence of PATE-B in the region of the sperm acrosome and at high levels on malignant prostatic epithelial cells. The syntenic mouse Pate-like locus encompasses 14 active genes coding for secreted proteins, which are all, except for Pate-P and Pate-Q, expressed primarily in prostate and/or testis. Pate-P and Pate-Q are expressed solely in placental tissue. Castration up-regulates prostate expression of mouse Pate-B and Pate-E, whereas testosterone ablates this induced expression. The sequence similarity between TFP/Ly-6/uPAR proteins that modulate activity of nicotinic acetylcholine receptors and the PATE (Pate)-like proteins stimulated us to see whether these proteins possess analogous activity. Pharmacological studies showed significant modulation of the nicotinic acetylcholines by the PATE-B, Pate-C, and Pate-P proteins. In concert with these findings, certain PATE (Pate)-like genes were extensively expressed in neuron-rich tissues. Taken together, our findings indicate that in addition to participation of the PATE (Pate)-like genes in functions related to fertility and reproduction, some of them likely act as important modulators of neural transmission.
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