{"id":7813,"date":"2026-02-24T06:09:16","date_gmt":"2026-02-24T06:09:16","guid":{"rendered":"https:\/\/pandapeptides.com\/research\/hgh-191aa\/"},"modified":"2026-04-28T18:28:36","modified_gmt":"2026-04-29T01:28:36","slug":"hgh-191aa","status":"publish","type":"page","link":"https:\/\/pandapeptides.com\/es\/research\/hgh-191aa\/","title":{"rendered":"HGH 191AA \u2014 Published Research"},"content":{"rendered":"<div style=\"max-width:800px;margin:0 auto\">\n<p style=\"color:#a1a1aa;font-size:14px;margin-bottom:30px\"><a href=\"\/es\/producto\/hgh-191aa\/\" style=\"color:#00e5ff\">&larr; Back to HGH 191AA product page<\/a><\/p>\n<div style=\"margin-top:40px;max-width:900px\">\n<h3 style=\"color:#fafafa;font-size:22px;margin-bottom:8px\">Biblioteca de investigaci\u00f3n<\/h3>\n<p style=\"color:#71717a;font-size:13px;margin-bottom:20px\">Published research on HGH 191AA \u2014 for educational purposes only<\/p>\n<details style=\"background:#18181b;border-radius:10px;margin-bottom:12px;overflow:hidden\">\n<summary style=\"padding:18px 24px;color:#00e5ff;font-size:16px;font-weight:600;cursor:pointer\">GH Receptor Structure and JAK2\/STAT5 Signaling<\/summary>\n<div style=\"padding:0 24px 20px;color:#a1a1aa;font-size:15px;line-height:1.7\">\n<p>HGH 191AA binds to GHR as a 1:2 ligand:receptor complex, inducing receptor dimerization. This activates the Janus kinase 2 (JAK2), which phosphorylates the intracellular domain of GHR. Phosphorylated GHR recruits and activates STAT5 (Signal Transducer and Activator of Transcription 5), which dimerizes, translocates to the nucleus, and induces transcription of target genes including IGF-1. The crystal structure of the hGH-GHR complex (PDB: 3HHR) revealed that two distinct receptor-binding sites on hGH (Site 1 and Site 2) mediate sequential receptor engagement.<\/p>\n<p style=\"font-size:12px;color:#52525b;font-style:italic\">de Vos AM et al. &#8220;HGH 191AA and extracellular domain of its receptor: crystal structure of the complex.&#8221; <em>Science.<\/em> 1992. <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/1546323\/\" style=\"color:#71717a\" rel=\"nofollow noopener\" target=\"_blank\">PubMed<\/a><\/p>\n<\/div>\n<\/details>\n<details style=\"background:#18181b;border-radius:10px;margin-bottom:12px;overflow:hidden\">\n<summary style=\"padding:18px 24px;color:#00e5ff;font-size:16px;font-weight:600;cursor:pointer\">Pulsatile GH-Axis Signaling Patterns<\/summary>\n<div style=\"padding:0 24px 20px;color:#a1a1aa;font-size:15px;line-height:1.7\">\n<p>Published GH-axis literature describes a pulsatile signaling pattern shaped by upstream stimulatory and inhibitory inputs. Across profiling studies, most daily signal output was concentrated in nocturnal pulses, with amplitude and frequency varying by cohort characteristics and metabolic state.<\/p>\n<p style=\"font-size:12px;color:#52525b;font-style:italic\">Ho KY et al. &#8220;Effects of sex and age on the 24-hour profile of GH secretion.&#8221; <em>J Clin Endocrinol Metab.<\/em> 1987. <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/3571421\/\" style=\"color:#71717a\" rel=\"nofollow noopener\" target=\"_blank\">PubMed<\/a><\/p>\n<\/div>\n<\/details>\n<\/div>\n<div class=\"panda-research-next-card\" style=\"margin:28px 0 0;padding:20px;background:#111113;border:1px solid #27272a;border-radius:14px;color:#a1a1aa;font-size:14px;line-height:1.65\">\n<h3 style=\"margin:0 0 10px;color:#fafafa;font-size:18px;line-height:1.3\">Continue reviewing HGH 191AA<\/h3>\n<p style=\"margin:0 0 14px\">Use the research references above alongside Panda\u2019s batch documentation and catalog specifications.<\/p>\n<div style=\"display:flex;flex-wrap:wrap;gap:10px\"><a href=\"\/es\/producto\/hgh-191aa\/\" style=\"display:inline-block;padding:9px 12px;border-radius:999px;background:#18181b;color:#00e5ff;text-decoration:none;border:1px solid #27272a\">View product specs<\/a><a href=\"\/es\/coa\/\" style=\"display:inline-block;padding:9px 12px;border-radius:999px;background:#18181b;color:#00e5ff;text-decoration:none;border:1px solid #27272a\">Check COA library<\/a><a href=\"\/es\/quality-and-testing\/\" style=\"display:inline-block;padding:9px 12px;border-radius:999px;background:#18181b;color:#d946ef;text-decoration:none;border:1px solid #27272a\">Quality &amp; testing<\/a><a href=\"\/es\/research-framework\/\" style=\"display:inline-block;padding:9px 12px;border-radius:999px;background:#18181b;color:#00e5ff;text-decoration:none;border:1px solid #27272a\">Evaluation guide<\/a><a href=\"\/es\/research\/\" style=\"display:inline-block;padding:9px 12px;border-radius:999px;background:#18181b;color:#a1a1aa;text-decoration:none;border:1px solid #27272a\">Research library<\/a><\/div>\n<\/div>\n<div style=\"margin-top:30px;padding:20px;background:#18181b;border-radius:10px;color:#71717a;font-size:13px\">\n<p><strong>Disclaimer:<\/strong> All research citations are provided for educational purposes only. These references describe findings from in vitro and animal model studies.<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>&larr; Back to HGH 191AA product page Research Library Published research on HGH 191AA \u2014 for educational purposes only GH Receptor Structure and JAK2\/STAT5 Signaling HGH 191AA binds to GHR as a 1:2 ligand:receptor complex, inducing receptor dimerization. This activates the Janus kinase 2 (JAK2), which phosphorylates the intracellular domain of GHR. Phosphorylated GHR recruits [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":7787,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-7813","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/pages\/7813","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/comments?post=7813"}],"version-history":[{"count":5,"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/pages\/7813\/revisions"}],"predecessor-version":[{"id":9435,"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/pages\/7813\/revisions\/9435"}],"up":[{"embeddable":true,"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/pages\/7787"}],"wp:attachment":[{"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/media?parent=7813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}