A transgene carrying a distal enhancer element of the maize P1-rr promoter caused silencing of an endogenous P1-rr allele in the progeny of transgenic maize plants. Expression of both the transgene and the endogenous P1-rr allele was reduced in the affected plants. The silenced phenotype was observed in the progeny of seven of eight crosses involving three independent transgenic events tested (...

The expression of a molecular cDNA clone (P1 KIN) of the human RNA-dependent P1/eIF-2 alpha protein kinase (PKR) was examined in transfected monkey cells and in cell-free protein-synthesizing systems. Expression of the wild-type (wt) P1 KIN cDNA, which encodes an active protein kinase, was compared with that of the phosphotransfer catalytic domain II Lys-296-->Arg (K296R) mutant cDNA, which doe...

Mycoplasma pneumoniae strains traditionally are divided into two types, based on sequence variation in the P1 gene. Recently, however, we have identified 8 P1 subtypes by restriction fragment length polymorphism analysis. In the present study the P1 gene sequences of three P1 type 1 and two P1 type 2 M. pneumoniae strains were analyzed. A new P1 gene sequence in a type 1 strain with partial sim...

A path-matching of order p is a vertex disjoint union nontrivial paths spanning vertices. Burr and Roberts, Faudree Schelp determined the 2-color Ramsey number path-matchings. In this paper we study multicolor Given positive integers r,p1,…,pr, define RPM(p1,…,pr) to be smallest integer n such that in any r-coloring edges Kn there exists color i at least pi for some i?[r]. Our main result r?2 p...

To understand the molecular mechanisms underlying paramutation, we examined the role of Unstable factor for orange1 (Ufo1) in maintaining paramutation at the maize pericarp color1 (p1) and booster1 (b1) loci. Genetic tests revealed that the Ufo1-1 mutation disrupted silencing associated with paramutation at both p1 and b1. The level of up regulation achieved at b1 was lower than that at p1, sug...

In this study, we employed the planar source illumination (PSI) geometry to quantify optical properties of turbid media. Delta-P1 and P1 photon diffusion models were utilized to calculate the reflectance in the PSI geometry. The performance of the P1 and Delta-P1 diffusion models was evaluated using Monte Carlo simulation and liquid phantom measurements. Our results revealed that Delta-P1 diffu...

Let P1, . . . ,Pn be properties of graphs. A (P1, . . . ,Pn)-partition of a graph G is a partition {V1, . . . , Vn} of V (G) such that, for each i = 1, . . . , n, the subgraph of G induced by Vi has property Pi. If a graph G has a unique (P1, . . . ,Pn)-partition we say it is uniquely (P1, . . . ,Pn)partitionable. We establish best lower bounds for the order of uniquely (P1, . . . ,Pn)-partitio...

The maize (Zea mays) p1 (for pericarp color1) gene encodes an R2R3 Myb-like transcription factor that regulates the flavonoid biosynthetic pathway in floral organs, most notably kernel pericarp and cob. Alleles of the p1 gene condition distinct tissue-specific pigmentation patterns; to elucidate the molecular basis of these allele-specific expression patterns, we characterized two novel P1-rw (...

One can prove the following four propositions: (1) For all points p, q of E2 T and for every subset P of E2 T such that P is an arc from p to q holds P is compact. (2) For every real number r holds 0 ¬ r and r ¬ 1 iff r ∈ the carrier of I. (3) For all points p1, p2 of E 2 T and for all real numbers r1, r2 such that (1 − r1) · p1 + r1 · p2 = (1 − r2) · p1 + r2 · p2 holds r1 = r2 or p1 = p2. (4) ...

Dimethylbenzanthracene-induced P1 sarcoma cells induce P1-specific antibodies in syngeneic DA rats. Antiidiotypic antibodies of specificity DA anti-(DA anti-P1) were induced against the tumor-specific antibodies and used to restimulate P1-primed DA T cells in vitro. Using antiidiotypic antibodies and T cell growth factor, P1-specific cytotoxic DA T cell clones were established by limiting dilut...