Figure 4. Expression of SNARE complex proteins in the developing endoderm. a: Stxbp1 expressed along the dorsal mesendoderm periphery in the transverse section at NF32. b: Transverse section at NF36 shows punctate expression of stxbp1 restricted to the dorsal endoderm. c: Whole gut at NF44, stxbp1 has a punctate expression throughout the gut. d: NF42 liver and pancreas showing stxbp1 punctate expression in the dorsal pancreas and more diffuse expression in the liver. e: syntaxin 1B has minimal punctate expression within the endoderm at NF32. f: At NF36 there is an increase in the punctate expression of syntaxin 1B in the endoderm, transverse section. g: NF44 whole gut showing expression of syntaxin 1B in the stomach, liver and duodenum. h: NF42 liver and pancreas with expression throughout the liver and pancreas. dme, dorsal mesendoderm; de, dorsal endoderm; l, liver; st, stomach; p, pancreas; dp, dorsal pancreas; vp, ventral pancreas. Reproduced with permission of the Publisher, John Wiley & Sons.
Image published in: Bilogan CK and Horb ME (2012)
Copyright © 2012. Image reproduced with permission of the Publisher, John Wiley & Sons.
| Gene | Synonyms | Species | Stage(s) | Tissue |
|---|---|---|---|---|
| stxbp1.L | munc18-1, nsec1, rbsec1, unc18 | X. laevis | Throughout NF stage 32 | dorsal endoderm endomesoderm |
| stx1b.L | LOC108703950, stx1b1, stx1b2, syntaxin 1b | X. laevis | Sometime during NF stage 32 to NF stage 35 and 36 | endoderm |
| stxbp1.L | munc18-1, nsec1, rbsec1, unc18 | X. laevis | Sometime during NF stage 42 to NF stage 44 | pancreas liver alimentary system liver primordium |
| stx1b.L | LOC108703950, stx1b1, stx1b2, syntaxin 1b | X. laevis | Sometime during NF stage 42 to NF stage 44 | pancreas stomach liver alimentary system dorsal pancreatic bud ventral pancreatic bud liver primordium |
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