Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound   Target Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound

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Query: EC:2.7.10.2 (focal adhesion kinase)
44,029 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

An experiment with 127 barrows representing five genotypes, 1) H x HD, 2) SYN, 3) HD x L[YD], 4) L x YD, and 5) Y x L (H = Hampshire, D = Duroc, SYN = synthetic terminal sire line, L = Landrace, and Y = Yorkshire), was conducted to evaluate growth and development of swine from 59 to 127 kg live weight. Animals were allowed ad libitum access to a pelleted finishing diet containing 18.5% CP, .95% lysine, and 10.5% fat, with an energy density of 3,594 kcal of ME/kg. Pigs were serially slaughtered at either 59, 100, 114, or 127 kg live BW. After slaughter, carcasses were chilled and backfat was measured at four locations. The right side of each carcass was fabricated into primal cuts of ham, loin, Boston Butt, picnic, and belly. Composition of each primal cut was determined by physical dissection into lean, fat, bone, and skin. Estimated allometric growth coefficients for carcass length, carcass weight, and longissimus muscle area relative to BW; carcass lean, fat, bone, and skin relative to both BW and carcass weight; and lean in each of the primal cuts relative to total carcass lean did not differ (P greater than .05) among genotypes. Relative to BW, the pooled growth coefficient(s) for carcass weight was (were) greater (P less than .001) than unity, whereas those for carcass length, longissimus muscle area, and backfat at first rib were smaller (P less than .001) than unity. Those for other backfat measurements were close to 1.00. Relative to either BW or carcass weight, the pooled coefficient(s) for fat was (were) greater (P less than .001) than unity, whereas those for lean, bone, and skin were smaller (P less than .001) than unity. Growth of lean, backfat, bone, and skin in the carcass were nearly linearly associated with increases in BW. The increase in fat weight was curvilinear as the pig grew and was accelerated in later growth stages, indicating that carcass fat percentage increased with increased BW.
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PMID:Growth, development, and carcass composition in five genotypes of swine. 163 96

A recently introduced extension of video-enhanced light microscopy, called Nanovid microscopy, documents the dynamic reorganization of individual cell surface components on living cells. 40-microns colloidal gold probes coupled to different types of poly-L-lysine label negative cell surface components of PTK2 cells. Evidence is provided that they bind to negative sialic acid residues of glycoproteins, probably through nonspecific electrostatic interactions. The gold probes, coupled to short poly-L-lysine molecules (4 kD) displayed Brownian motion, with a diffusion coefficient in the range 0.1-0.2 micron2/s. A diffusion coefficient in the 0.1 micron2/s range was also observed with 40-nm gold probes coupled to an antibody against the lipid-linked Thy-1 antigen on 3T3 fibroblasts. Diffusion of these probes is largely confined to apparent microdomains of 1-2 microns in size. On the other hand, the gold probes, coupled to long poly-L-lysine molecules (240 kD) molecules and bound to the leading lamella, were driven rearward, toward the boundary between lamelloplasm and perinuclear cytoplasm at a velocity of 0.5-1 micron/min by a directed ATP-dependent mechanism. This uniform motion was inhibited by cytochalasin, suggesting actin microfilament involvement. A similar behavior on MO cells was observed when the antibody-labeled gold served as a marker for the PGP-1 (GP-80) antigen. These results show that Nanovid microscopy, offering the possibility to observe the motion of individual specific cell surface components, provides a new and powerful tool to study the dynamic reorganization of the cell membrane during locomotion and in other biological contexts as well.
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PMID:Lateral diffusion and retrograde movements of individual cell surface components on single motile cells observed with Nanovid microscopy. 167 Jul 78

Eighty-nine women prostitutes who underwent clinical and microbiologic examination were found to have gonococcal infection. The median age was 22; 92.1% were from urban areas. Nearly all the women prostitutes refrained from barrier methods (92.1%) and had contact with several partners (91.0%). The most frequent clinical findings were leukorrhea (50.6%), cervicitis (20.2%), and pelvic inflammatory disease (PID) (18.0%). Eighty-one women prostitutes (93.1%) had experienced a previous STD, with Chlamydia trachomatis (34.8%), Trichomonas vaginalis (30.3%), Neisseria gonorrhoeae (29.2%), and Ureaplasma urealyticum (23.6%) as the most frequent microorganisms isolated. Microorganisms associated with N. gonorrhoeae were isolated, mainly T. vaginalis (40.4%), C. trachomatis (31.5%), and Mycoplasma hominis (21.3%). For N. gonorrhoeae, the most frequent auxotypes were prototrophic (67.4%) and Proline (Pro)-dependent (14.6%); 2.2% of the strains were non-auxotypable. Beta-lactamase production was detected in three strains (3.4%) belonging to the auxotype/serovar: Lys/IA, Prototrophic/IB, and Pro/IB. The two former produced the 3.2-MDa "African" plasmid; the latter produced two plasmids (the 4.5-MDa "Asian" and the 24.5-MDa transfer plasmid.
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PMID:Gonorrhea in women prostitutes: clinical data and auxotypes, serovars, plasmid contents of PPNG, and susceptibility profiles. 190 90

The inflammatory neuropeptide substance P acted as a costimulant for macrophage CSF-1-induced clonal proliferation of murine marrow-derived two signal-dependent mononuclear phagocyte progenitors. Substance P had no effect on clonal proliferation by progenitors responding solely to CSF-1. Substance P fragment 2-11 had no costimulatory activity; however, SP fragment 1-4 retained the full activity of the parent undecapeptide. Fragment 1-4 (ARG-PRO-LYS-PRO), a peptide containing a PRO residue between two positive charges, is a tuftsin-like (THR-LYS-PRO-ARG) tetrapeptide, and tuftsin exerted an identical costimulatory effect. Substance P, SP:1-4, and tuftsin were optimally effective as costimulants at 10(-7) to 10(-6) M. (ALA1)-tuftsin, an inhibitory analog of tuftsin, was a potent negative regulator of two signal-dependent colony formation. (ALA1)-tuftsin at concentrations less than or equal to 10(-9) M exerted dose-dependent inhibition of the positive effects of optimal concentrations of all of the co-stimulants tested, including bacterial LPS. The inhibitory tetrapeptide was equivalent in activity to ferritin, an established inhibitor of two signal-dependent colony formation. The results indicated that SP may influence myelopoiesis in addition to its other inflammatory and immunopotentiating properties. In addition, a potentially valuable modulator of SP and LPS responses in this system, (ALA1)-tuftsin, was identified.
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PMID:Substance P augmentation of CSF-1-stimulated in vitro myelopoiesis. A two-signal progenitor restricted, tuftsin-like effect. 245 23

The antistress affect of the substance P1-4 N-terminal fragment (ARG-Pro-Lys-Pro, 100 mkg/kg, i.p.) has been studied on the model of immobilization stress in rats. It was ascertained that the preparation of protective effect is revealed to the greatest extent on the exhaustion stage (48 h of immobilization), which served to prevent the lymphoid organs mass reduction and ulcer development and also accounted for greater adrenaline and noradrenaline content preservation in tissues and chromaffin cells of adrenal glands in stressed animals.
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PMID:[Effect of the N-terminal fragment of substance P1-4 on the somatic manifestations of the stress reaction and on the catecholamine content of the adrenals in rats]. 246 99

Effective carrier function of selected representatives of new branched polypeptides covalently coupled with the synthetic monovalent hapten, oxazolone was studied. The effectiveness of oxazolone-synthetic polypeptide conjugates in inducing oxazolone-as well as carrier-specific antibody responses in inbred mice was compared to that of bovine serum albumin (BSA)- and KLH-oxazolone conjugates. The synthetic polypeptides, poly[Lys-(D-Leui-DL-Alam)] (D-LAK), LAK and FAK, as well as the common poly[Lys-(DL-Alam)](AK) core covalently coupled to oxazolone (Ox) induced a T cell-dependent antibody response when repeatedly administered with or without Freund's adjuvant in mice. This was evidenced by: the increasing titer of oxazolone-specific IgG during the course of the memory response; the appearance of all IgG subclasses; the effective oxazolone-specific priming by the conjugates; and the induction of an intense oxazolone- and carrier-specific DTH reaction. Although the oxazolone-specific antibody response was 10-100 times lower than that induced by KLH- or BSA-oxazolone conjugates, it was accompanied by a lower level or no detectable carrier-specific antibody response despite an effective carrier-specific T cell-mediated response. Significant differences were observed between the effectiveness of synthetic polypeptides used as carrier: highest oxazolone-specific antibody titers were observed using the AK, LAK and FAK conjugates. The intensity and specificity of the DTH reaction and antibody response induced by the carrier-oxazolone conjugates suggested that the distinct effectiveness of L- and D-amino acid-containing conjugates (LAK vs D-LAK and FAK vs D-FAK) was dependent on altered B cell recognition of the haptenic group. Circular dichroism (CD) spectra indicating different local orientation of oxazolone, when coupled to L or D side chain-terminating amino acids, support this suggestion.
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PMID:Structural characteristics influencing the carrier function of synthetic branched polypeptides based on poly[Lys-(DL-Ala)3)]backbone. 259 15

The products generated after addition of the ARG-LYS esteropeptidase activity purified from rat brain to synthetic somatostatin-28 were analyzed using radioimmunoassay, HPLC and amino acid analysis. In addition to somatostatin-14, both free arginine and free Lysine were identified together with somatostatin-28. The dipeptide ARG-LYS was not present, which indicates that three peptide bonds were hydrolyzed in order to achieve excision of the doublet. Since it is likely that the octacosapeptide is a precursor for both somatostatin-14 and somatostatin-28, these observations add further support to the hypothesis that the convertase is also involved in the in vivo processing of endogenous somatostatin-28.
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PMID:The somatostatin-28 convertase of rat brain cortex generates both somatostatin-14 and somatostatin-28. 286 Sep 1

The specificity of amino acid binding sites in a sedimentable fraction prepared from catfish taste epithelium was examined. Using seven 3H-labeled amino acids as ligands and the unlabeled amino acids in binding competition assays, the presence of possibly three classes of amino acid binding sites was deduced. Site 1 binds L-THR, L-SER, L-ALA and possibly D-ALA and beta-ALA, Site 2 binds L-SER, L-ALA, GLY, D-ALA, and beta-ALA and Site 3 binds L-ARG and L-LYS. Additional evidence supporting the specificity of Site 2 was obtained from the specificity of enhancement of L-ALA binding. The results demonstrate the presence of some major classes of taste receptor sites, and provide a basis for understanding taste receptor specificity at the biochemical level.
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PMID:Biochemical studies of taste sensation--XII. Specificity of binding of taste ligands to a sedimentable fraction from catfish taste tissue. 287 41

We have examined the sites phosphorylated on acetyl-CoA carboxylase by three protein kinases which have been shown to inactivate the enzyme, i.e. cyclic-AMP-dependent protein kinase, acetyl-CoA carboxylase kinase-2 (ACK2, purified from rat mammary gland) and the AMP-activated protein kinase (formerly called acetyl-CoA carboxylase kinase-3, purified from rat liver). Each protein kinase phosphorylates two out of three sites (termed 1-3) which have been established by amino acid sequencing. The two sites phosphorylated by each kinase can be recovered on separate peptides, TC1 and TC2, derived by combined digestion of the native enzyme by trypsin and chymotrypsin: TC1 = Ser-2Ser(P)-Met-3Ser(P)-Gly-Leu; TC2 = Arg-Met-1Ser(P)-Phe- Cyclic-AMP-dependent protein kinase phosphorylates sites 1 and 2 exclusively, whereas the AMP-activated protein kinase phosphorylates sites 1 and 3, plus at least one other minor site. ACK2 phosphorylates site 1 and, more slowly, an unidentified site(s) within TC1. We have also established the structures of the single major phosphopeptides (T1 and C1 respectively) which are recovered by HPLC after acetyl-CoA carboxylase phosphorylated by cyclic-AMP-dependent protein kinase is digested with trypsin or chymotrypsin alone. T1 is related to TC1, and has the structure: Ser-Ser(P)-Met-Ser-Gly-Leu-His-Leu-Val-Lys. C1 is identical with TC2. We have carried out studies on the correlation of the activity of acetyl-CoA carboxylase with the occupancy of sites 1, 2 and 3 during phosphorylation by each of the three protein kinases. The results suggest that phosphorylation of site 3 is primarily responsible for the large decrease in Vmax produced by the AMP-activated protein kinase, while phosphorylation of site 1 may be primarily responsible for the increase in A0.5 for citrate and more modest depression of Vmax produced by cyclic-AMP-dependent protein kinase and ACK2. Our results emphasize that amino acid sequence information is essential in the unequivocal interpretation of data from phosphopeptide mapping experiments and allow a more complete interpretation of previous data on phosphorylation of acetyl-CoA carboxylase in intact cells. They also open the way to experiments which could establish the physiological roles of these protein kinases in the control of fatty acid synthesis.
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PMID:Identification by amino acid sequencing of three major regulatory phosphorylation sites on rat acetyl-CoA carboxylase. 290 Jan 38

Experiments were designed to determine whether carbamoylation-related inhibition of glutathione reductase (GR) was involved in the previously reported correlation between nitrosourea carbamoylating activity (defined by the extent of binding to L-lysine) and the magnitude of Misonidazole (MISO) chemopotentiation. The extent to which 12 different nitrosoureas (NUs) inhibited GR activity in extracts of EMT-6/Ro cells was determined and compared to the magnitude of chemopotentiation realized when each was combined with MISO for the treatment of EMT-6/Ro cells in vitro. No correlation was observed between glutathione reductase inhibition and the potentiation of nitrosourea cytotoxicity by MISO in vitro, suggesting that inhibition of GR was not involved in the mechanism of MISO chemopotentiation. Furthermore, when the original correlation was re-examined with the inclusion of additional chemopotentiation data for four hydroxylated analogs of CCNU, including two which possess little or no lysine-carbamoylating activity but which were significantly enhanced by MISO, a correlation between carbamoylation and the magnitude of MISO chemopotentiation could not be established. From these studies we conclude that NU-carbamoylating activity is not the prime determinant of interaction between MISO and the NUs.
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PMID:Carbamoylation, inhibition of glutathione reductase and chemopotentiation of nitrosoureas by misonidazole. 375 62


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