Contacts of the helix formed by residues 279 - 286 (chain C) in PDB entry 1UPB
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with PRO 279 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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273C ASP* 4.0 8.7 - - + +
278C PHE* 1.3 97.7 - - + +
280C ALA* 1.3 56.6 + - - +
281C LEU 3.4 2.2 - - - -
282C GLN* 3.7 17.4 + - + +
283C THR* 2.7 38.8 + - - +
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Residues in contact with ALA 280 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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272C MET* 3.7 23.1 - - + +
273C ASP* 3.1 8.8 + - - +
276C LEU* 4.1 10.5 - - + -
278C PHE* 2.9 18.3 + - + +
279C PRO* 1.3 70.5 - - - +
281C LEU* 1.3 60.3 + - - +
283C THR* 3.2 5.2 + - - -
284C MET* 2.9 30.3 + - - +
364C LEU* 3.6 29.8 - - + +
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Residues in contact with LEU 281 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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268C VAL* 4.1 17.5 - - + -
269C THR 4.1 13.9 - - - +
270C GLY* 4.6 13.9 - - - +
272C MET* 3.4 29.8 - - + -
273C ASP* 3.0 30.1 + - - +
279C PRO 3.4 0.2 - - - -
280C ALA* 1.3 73.6 - - - +
282C GLN* 1.3 59.7 + - - +
284C MET* 3.1 5.4 + - - +
285C PHE* 2.9 42.1 + - + +
306C MET* 4.7 13.9 - - + +
309C LYS* 3.9 31.4 - - + +
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Residues in contact with GLN 282 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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273C ASP* 4.8 3.8 + - - +
279C PRO* 3.7 20.1 + - + +
280C ALA 3.4 0.6 - - - -
281C LEU* 1.3 73.9 - - + +
283C THR* 1.3 62.9 + - - +
286C ALA* 2.8 46.4 + - + +
287C PRO* 4.0 0.3 - - - +
309C LYS* 3.4 28.5 - - + +
310C GLY* 3.4 26.4 + - - +
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Residues in contact with THR 283 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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278C PHE* 3.8 11.0 - - + -
279C PRO* 2.7 24.4 + - - +
280C ALA* 3.2 11.4 + - - -
282C GLN* 1.3 76.7 - - - +
284C MET* 1.3 62.3 + - - +
287C PRO* 4.2 5.8 - - - +
359C HIS* 3.8 8.1 - - - -
360C ASP 4.3 6.8 - - - +
361C ILE* 3.7 27.9 - - + +
363C PRO* 5.2 5.8 - - + -
364C LEU* 4.0 26.2 - - + +
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Residues in contact with MET 284 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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248C ILE* 3.8 21.1 - - + +
265C TYR* 3.5 46.7 - - + +
266C GLY 4.9 1.8 - - - +
267C ALA 4.4 4.7 - - - +
268C VAL* 3.5 25.8 - - + -
272C MET* 4.2 18.6 - - + -
280C ALA 2.9 13.4 + - - +
281C LEU* 3.1 6.7 + - - +
283C THR* 1.3 77.6 - - - +
285C PHE* 1.3 72.3 + - + +
288C VAL* 3.5 5.2 - - - +
359C HIS* 2.8 26.6 + - - -
361C ILE* 4.4 11.0 - - - -
364C LEU* 4.2 10.1 - - + +
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Residues in contact with PHE 285 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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220C VAL* 4.8 5.4 - - + -
222C VAL* 4.5 13.0 - - + -
248C ILE* 3.8 38.8 - - + -
268C VAL* 3.9 27.4 - - + -
281C LEU* 2.9 27.0 + - + +
284C MET* 1.3 83.8 - - + +
286C ALA* 1.3 63.4 + - - +
287C PRO* 3.4 3.8 - - - -
288C VAL* 3.1 19.4 + - + +
291C VAL* 5.2 1.3 - - + -
302C LEU* 5.3 4.3 - - + -
306C MET 3.4 22.2 - - - -
307C TRP* 3.7 38.1 - - + +
309C LYS* 3.9 9.0 - - + -
313C LYS* 2.8 26.6 + - - -
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Residues in contact with ALA 286 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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282C GLN* 2.8 46.4 + - + +
285C PHE* 1.3 71.1 - - - +
287C PRO* 1.3 60.6 - - + +
309C LYS* 3.4 11.8 + - - +
310C GLY* 3.7 6.0 - - - -
311C ILE* 3.2 19.1 + - - +
313C LYS* 3.2 14.4 + - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il