Lysyl oxidase (LOX) is an extracellular amine oxidase catalyzing formation of lysine-derived cross-linkages in collagen and elastin in extracellular matrices. Four human paralogs of LOX (LOXL1, LOXL2, LOXL3, and LOXL4) have been identified, each encoding the functional domains required for the amine oxidase activity of LOX. Upregulated expression of LOX and LOXL2 was reported to show significant correlation with absence of lymphovascular invasion in tumor tissues from patients with colorectal adenocarcinoma, suggesting that oxygen tension around tumors may be an important factor in expressional regulation of these genes in colorectal carcinomas. To evaluate the effects of hypoxia on expression of LOX and LOXL2 in colorectal carcinomas, we performed promoter assays and RT-PCR analysis under hypoxia in colorectal carcinoma cell lines, HT-29 and HCT-116. Expression of LOX was upregulated under hypoxia in both HT-29 and HCT-116 cells, whereas LOXL2 expression was not affected by hypoxia in those cells. In the highly metastatic HCT-116 cells, LOX showed a higher level of upregulation than in HT-29 cells, suggesting a possible association of LOX upregulation with increased invasiveness and metastatic potential in colorectal carcinomas.

Rice is the most important staple food crop of almost half of the world`s population. In rice, seed longevity is major factor for production and storage potential of seeds. But it is faced with grain degradation and loss of seed viability. Lipoxygenases(LOX) are a family of enzymes related to the seed longevity. LOX activity in rice grain is present in a bran-milling fraction. It is also observed that rice embryos contains three isozymes activites, Lox1, Lox2 and Lox3. Among those, the Lox3 isozyme is known as the major component in the embryonic tissue. In this study, genetic structure variability of three seed longevity related genes, Lox1, Lox2 and Lox3 were examined by using whole-genome resequencing data of 137 accessions of rice core set. The new SNPs and InDels in the exon regions identified through haplotyping analysis would be useful to develop new varieties with improved storage ability of rice in the future molecular breeding.

Lipoxygenase 및 7S 단백질이 결실된 가공적성이 높은 콩 품종을 육성하기 위하여 국내의 장려품종을 모본으로, 7S의 α와 αʹ-subunit이 없는 CS735을 부본으로 하여 2006년도에 CBC2601(경상대콩 × CS735), CBC2602(진품콩 2호 × CS735), CBC2603(진율콩 × CS735) 및 CBC2604(청자콩3호 × CS735)의 4조합을 인공교배하여 세대를 진전시켰다. 2009년 수확된 F4세대 4조합438계통의 3280개체에 대하여 개체당 3립씩 총 9840립을 SDSPAGE를 실시하여 Lipoxygenase 및 7S 단백질의 결실계통을 선발하였다. 교배조합 CBC2601과 CBC2602의 F4계통에서는 LOX 및 7S의 αʹ,α-subunit 결실 또는 동시결실 계통들이 선발되었으며, 일부 계통들에서는 LOX, 7S의 αʹ,α-subunit 및 β-subunit가 동시에 결실된 계통이 선발되었다. 교배조합 CBC2603과 CBC2604의 F4계통 에서는 αʹ-subunit 및 α-subunit가 각각 결실되거나 또는 동시에 결실된 계통들이 선발되었다.