Contacts of the strand formed by residues 329 - 334 (chain A) in PDB entry 2IZV
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 ARG 329 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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325A ARG* 3.6 12.2 - - - +
326A ARG 3.0 30.2 + - - +
327A TYR* 3.6 14.1 + - + +
328A SER* 1.3 99.9 + - - +
330A SER* 1.3 61.6 + - - +
331A LEU* 3.6 20.2 + - + +
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Residues in contact with SER 330 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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297A GLU* 3.9 35.9 + - - +
300A LEU* 4.0 19.0 - - - +
301A GLU* 4.6 0.7 + - - -
324A PHE 3.6 6.5 - - - -
325A ARG* 3.5 23.0 + - - +
329A ARG* 1.3 70.4 - - - +
331A LEU* 1.3 62.4 + - - +
332A HIS* 4.2 10.8 + - - -
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Residues in contact with LEU 331 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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323A SER* 3.4 4.5 - - - -
324A PHE* 2.8 65.8 + - + +
326A ARG* 3.7 29.4 - - + +
327A TYR* 4.6 9.2 - - + -
329A ARG* 3.9 20.0 - - + +
330A SER* 1.3 75.0 - - - +
332A HIS* 1.3 67.8 + - - +
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Residues in contact with HIS 332 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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293A LYS* 3.5 41.3 - - + +
296A ALA* 4.2 1.6 - - + -
297A GLU* 2.6 37.3 + - + +
300A LEU* 5.8 0.2 - - + -
311A ARG* 3.2 14.4 + - - +
321A SER* 5.5 0.9 - - - -
322A VAL 3.3 7.2 - - - +
323A SER* 2.7 32.2 + - - -
324A PHE* 4.4 3.9 - - - -
330A SER* 4.2 7.0 + - - -
331A LEU* 1.3 83.2 - - - +
333A ALA* 1.3 65.1 + - - +
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Residues in contact with ALA 333 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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321A SER* 3.3 3.2 - - - -
322A VAL* 2.9 54.0 + - + +
324A PHE* 4.2 3.8 - - + -
332A HIS* 1.3 76.6 - - - +
334A ARG* 1.3 64.5 + - - +
335A ILE 3.6 0.7 + - - -
344A PHE* 3.7 21.4 - - + -
375A PRO* 4.1 13.9 - - + -
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Residues in contact with ARG 334 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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313A SER* 5.0 0.2 - - - +
315A GLN* 3.4 38.6 + - - +
318A TYR* 3.4 47.3 + - + -
320A PHE 4.4 2.0 - - - +
321A SER* 3.7 17.2 + - - +
332A HIS* 5.6 0.2 - - - +
333A ALA* 1.3 73.3 - - - +
335A ILE* 1.3 60.1 + - - +
336A GLU* 3.3 28.8 + - + +
344A PHE* 3.4 21.2 - - - +
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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